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{{short description|Telecommunications company in Singapore}}
{{EngvarB|date=January 2019}}
{{Use dmy dates|date=January 2019}}
{{Infobox company
| name = Singapore Telecommunications Limited
| logo = Singtel logo.svg
| logo_size = 120px
| image = Singtel 2023.jpg
| image_size = 250px
| image_caption = [[Comcentre]], the former corporate headquarters of Singtel
| trading_name = Singtel
| type = [[Public company|Public]]
| traded_as = {{sgx|Z74}}
| ISIN = {{ISIN|sl=n|pl=y|US82929R3049}}
| genre = 
| former_name = 
| foundation = {{Start date and age|df=y|1879}} (as Private Telephone Exchange)<br/ >{{start date and age|df=y|1992|03|28}} (as Singapore Telecom) <ref name="sgpbusiness-singtel">{{cite web|title=SINGAPORE TELECOMMUNICATIONS LIMITED (199201624D) - Singapore Business Directory|access-date=28 January 2021|publisher=SGPBusiness.com|url=https://www.sgpbusiness.com/company/Singapore-Telecommunications-Limited}}</ref>
| founder = [[Koh Boon Hwee]]
| owner = 
| location = SingPost Centre<ref>{{cite website|url=https://www.singtel.com/content/dam/singtel/investorRelations/stockExchange/2024/Ann-20240422-ChangeOfRegisteredOfficeAddress.pdf|title=SGX Announcement- Change of Registered Office Address|publisher=Singtel|date=April 22, 2024|accessdate=November 13, 2025}}</ref>
| hq_location_city = [[Paya Lebar]]
| hq_location_country = [[Singapore]]
| key_people = Yuen Kuan Moon (CEO)
| area_served = {{ubl|Asia|Australia|Africa}}
| industry = [[Telecommunications]]
| products = [[Landline|Fixed-line]] and [[Mobile phone|mobile telephony]], [[Broadband Internet access|broadband]] and fixed-line internet services, [[digital television]], [[Information technology|IT]] and [[Telecommunications network|network]] services
| services = 
| revenue = {{loss}} [[SGD|S$]]16.54 billion (2020)
| operating_income = {{loss}} [[SGD|S$]]3.7 billion (2020)
| net_income = {{loss}} [[SGD|S$]]1.08 billion (2020)
| assets = {{profit}} [[SGD|S$]]48.96 billion (2020)
| equity = {{loss}} [[SGD|S$]]26.79 billion (2020)
| parent = [[Temasek Holdings]]
| num_employees = >25,000
| divisions = 
| subsid = {{plain list|
*Amobee
*[[Bharti Airtel]] (8.32%)
*Dataspark Pte. Ltd.
*Hooq Digital
*[[Optus]]
*Singtel Innov8
*[[NCS Group|NCS]]<ref name="sgpbusiness-singtelsubsidiaries">{{cite web|title=Subsidiaries companies of SINGAPORE TELECOMMUNICATIONS LIMITED|access-date=12 February 2021|publisher=SGPBusiness.com|url=https://www.sgpbusiness.com/company/Singapore-Telecommunications-Limited/subsidiaries}}</ref>
*[[Telkomsel]] (30.1%)
}}
| homepage = {{Official URL}}
| footnotes = 
}}

'''Singapore Telecommunications Limited''', [[Trade name|trading as]] '''Singtel''', is a Singaporean [[telecommunications]] [[Conglomerate (company)|conglomerate]], the country's principal [[Fixed-line|fixed-line operator]] and one of the four major [[mobile network operator]]s operating in the [[country]].

== Overview ==
The company is the [[List of mobile network operators of the Asia Pacific region#Singapore|largest mobile network operator]] in Singapore with 4.1&nbsp;million subscribers and through subsidiaries, has a combined mobile subscriber base of 770 million customers as of 31 March 2022.<ref>{{cite web|title=GCEO Review – Singtel Annual Report|url=http://info.singtel.com/annualreport/2017/pages/gceo-review.html|publisher=Singtel|access-date=11 September 2017|archive-url=https://web.archive.org/web/20170911114825/http://info.singtel.com/annualreport/2017/pages/gceo-review.html|archive-date=11 September 2017|url-status=dead|df=dmy-all}}</ref><ref name="cust base">{{cite web|url=http://info.singtel.com/node/7609|title=SingTel Group's mobile customer base reaches 368 million|website=singtel.com|access-date=10 November 2010|archive-url=https://web.archive.org/web/20180524151353/http://info.singtel.com/node/7609|archive-date=24 May 2018|url-status=dead|df=dmy-all}}</ref><ref>{{cite web |url=http://theindonesiatoday.com/technology-headline/7477-singtel-and-telkomsel-record-mobile-subscribers-growth-in-2010-.html |title=SingTel and Telkomsel Record Mobile Subscribers Growth in 2010 |access-date=8 March 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110219013328/http://www.theindonesiatoday.com/technology-headline/7477-singtel-and-telkomsel-record-mobile-subscribers-growth-in-2010-.html |archive-date=19 February 2011 }}</ref><ref>{{Cite web |title=Investor factsheet Mar 2022 |url=https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2022/FY22_Factsheet_v3.pdf }}</ref> The company was known as '''Telecommunications Equipment''' until 1995. Singtel provides [[ISP]], [[IPTV]] ([[Singtel TV]]) and mobile phone networks<ref>{{cite web|title=Transfer of Mobile Business from Singtel Mobile to Singtel Mobile Singapore|url=http://info.singtel.com/About-Us/SGmobile|publisher=SingTel|access-date=1 October 2010|archive-url=https://web.archive.org/web/20110320231224/http://info.singtel.com/About-Us/SGmobile|archive-date=20 March 2011|url-status=dead|df=dmy-all}}</ref> and fixed line telephony services.

Singtel has expanded aggressively outside its home market and owns shares in many regional operators, including full ownership of [[Australia]]'s second largest telco [[Optus]] and 32.15% of [[Bharti Airtel]], the second largest carrier in [[India]].<ref>{{cite web|title=SingTel increases stake in Bharti Airtel to 32.15%|url=http://articles.economictimes.indiatimes.com/2011-01-13/news/28431456_1_bharti-airtel-largest-telecoms-largest-shareholder|access-date=29 April 2015|archive-url=https://web.archive.org/web/20150610070053/http://articles.economictimes.indiatimes.com/2011-01-13/news/28431456_1_bharti-airtel-largest-telecoms-largest-shareholder|archive-date=10 June 2015|url-status=dead}}</ref>

Singtel controls significant market share in Australia and Singapore, with 82% of the fixed-line market, 47% of the mobile market and 43% of the broadband market in Singapore.<ref>{{cite web|url=http://info.singtel.com/sustainabilityreport2014/about_singtel_03.html|title=Singtel Sustainability Report 2014|access-date=2 June 2015|archive-url=https://web.archive.org/web/20160101110041/http://info.singtel.com/sustainabilityreport2014/about_singtel_03.html|archive-date=1 January 2016|url-status=dead}}</ref> Singtel is also the second-largest company by market capitalisation listed on the [[Singapore Exchange]]<ref>{{cite news |title=DBS overtakes SingTel as South-east Asia's most valuable company |url=https://www.todayonline.com/singapore/dbs-overtakes-singtel-south-east-asias-most-valuable-company |work=TODAYonline |access-date=5 September 2018 |archive-url=https://web.archive.org/web/20180905215057/https://www.todayonline.com/singapore/dbs-overtakes-singtel-south-east-asias-most-valuable-company |archive-date=5 September 2018 |url-status=live }}</ref> and is majority owned by [[Temasek Holdings]], the investment arm of the Singapore government.<ref>{{Cite web |last=Tan |first=Huileng |last2=Shaffer |first2=Leslie |date=2016-07-07 |title=Temasek's portfolio drops by $14 billion amid 'challenging' market conditions |url=https://www.cnbc.com/2016/07/07/temaseks-portfolio-takes-a-9-pct-hit-amid-challenging-market-conditions.html |access-date=2025-07-25 |website=CNBC |language=en}}</ref> Singtel is an active investor in innovation companies through its Singtel Innov8 subsidiary, founded in 2011 with {{SGD|200000000|link=on}} start up capital.

==History==
{{Prose|date=January 2022|section}}

===1800s===
*1883: Singapore's phone network was operated by the [[Oriental Telephone and Electric Company]] (OTEC). The Public Telephone Exchange set up 60 telephone lines connecting local businesses of that era.<ref name="eresources.nlb.gov.sg">{{cite web|url=http://eresources.nlb.gov.sg/infopedia/articles/SIP_1610_2011-03-21.html|title=Singapore Telecommunications (SingTel) - Infopedia|website=eresources.nlb.gov.sg|access-date=7 September 2018|archive-url=https://web.archive.org/web/20180907183102/http://eresources.nlb.gov.sg/infopedia/articles/SIP_1610_2011-03-21.html|archive-date=7 September 2018|url-status=live}}</ref>

===1900s===
*1907: OTEC was replaced by a new Central Telephone Exchange in Hill Street<ref name="eresources.nlb.gov.sg"/>
*1955: The '''Singapore Telephone Board''' (STB) is incorporated as a statutory board with exclusive rights to operate telephone service within Singapore.<ref name=":0">{{Cite news|url=http://eresources.nlb.gov.sg/newspapers/Digitised/Article/straitstimes19790401.2.89.3|title=ONE HUNDRED YEARS OF TELEPHONE SERVICE IN SINGAPORE|date=1 April 1979|work=[[The Straits Times]]|access-date=23 July 2019|via=NewspaperSG|archive-url=https://web.archive.org/web/20190722234235/http://eresources.nlb.gov.sg/newspapers/Digitised/Article/straitstimes19790401.2.89.3|archive-date=22 July 2019|url-status=live}}</ref> 
*1 April 1974: Merger of STB into Telecommunications Authority of Singapore (TAS, Telecoms or Singapore Telecom). Before 1974, STB was responsible for local services, while TAS provided international services.<ref name=":0" /><ref name=":1">{{Cite web|url=http://www.nas.gov.sg/archivesonline/government_records/agency-details/33|title=Agency Details - Government Records - Telecommunication Authority of Singapore (TAS)|website=www.nas.gov.sg|access-date=2019-07-22}}</ref><ref name="home.singtel.com">{{Cite web |url=http://home.singtel.com/about_singtel/company_profile/milestones/companypro_milestones.asp |title=SingTel.com - Milestones & History |access-date=13 November 2008 |archive-url=https://web.archive.org/web/20081117124129/http://home.singtel.com/about_singtel/company_profile/milestones/companypro_milestones.asp |archive-date=17 November 2008 |url-status=dead |df=dmy-all }}</ref>
*1982: [[Postal, telegraph and telephone service|Merger of the Postal Department into Singapore Telecom]].<ref name=":0" /><ref name=":1" />
*1992: Singapore Telecommunications Private Limited (SingTel) is incorporated in March as a separate company.<ref name="home.singtel.com"/> The remainder of Telecoms became [[Singapore Post|Singapore Post Private Limited]] and a smaller Telecommunications Authority of Singapore (later becoming [[Infocomm Media Development Authority]]).<ref name=":1"/>
*1992: SingTel introduces the call zone service, made defunct in 1997.
*October 1993: SingTel became a public company (Singapore Telecommunications Limited) via an [[initial public offering|IPO]].<ref name="home.singtel.com"/>
*1997 SingTel was compensated $1.5 billion by the Singaporean Government for early termination of its monopoly,<ref>{{cite news|last1=Borsuk|first1=Richard|title=SingTel Wins Case Filed by Regulator|url=https://www.wsj.com/articles/SB1022751694267869080|access-date=2 June 2015|work=The Wall Street Journal|date=31 May 2002|archive-url=https://web.archive.org/web/20160625190422/http://www.wsj.com/articles/SB1022751694267869080|archive-date=25 June 2016|url-status=live}}</ref> based on projected earnings lost between 2000 and 2007 due to its loss of monopoly.<ref>{{cite news|title=SingTel compensated|url=https://news.google.com/newspapers?id=CN8tAAAAIBAJ&sjid=9jEDAAAAIBAJ&pg=3644%2C2361812|access-date=2 June 2015|work=The Nation|archive-url=https://web.archive.org/web/20160510095827/https://news.google.com/newspapers?id=CN8tAAAAIBAJ&sjid=9jEDAAAAIBAJ&pg=3644,2361812|archive-date=10 May 2016|url-status=live}}</ref>

===2000s===
* In 2000, SingTel lost its domestic monopoly in Singapore, with the government deregulating the telecommunications industry.<ref>{{cite news|last1=Richardson|first1=Michael|title=Analysts Split on Deregulation's Impact : For Singapore Telecom, Battle on Home Front|url=https://www.nytimes.com/1997/03/31/business/worldbusiness/31iht-singtel.t.html|access-date=2 June 2015|work=The New York Times|date=31 March 1997|archive-url=https://web.archive.org/web/20150602133827/http://www.nytimes.com/1997/03/31/business/worldbusiness/31iht-singtel.t.html|archive-date=2 June 2015|url-status=live}}</ref><ref>{{cite news|title=Lee up, Li down|url=https://www.economist.com/business/2001/03/29/lee-up-li-down|newspaper=The Economist|access-date=2 June 2015|archive-url=https://web.archive.org/web/20150602135321/http://www.economist.com/node/550678|archive-date=2 June 2015|url-status=live}}</ref>
*2001: SingTel is awarded a 3G licence in April.
*In March 2001, Singtel purchased Optus for between $7.4&nbsp;billion to $8.5&nbsp;billion<ref>{{cite news|last1=Gaylord|first1=Becky|title=SingTel and Optus Shares Slump on News of Deal|url=https://www.nytimes.com/2001/03/27/business/singtel-and-optus-shares-slump-on-news-of-deal.html|access-date=2 June 2015|work=The New York Times|date=27 March 2001|archive-url=https://web.archive.org/web/20150527173838/http://www.nytimes.com/2001/03/27/business/singtel-and-optus-shares-slump-on-news-of-deal.html|archive-date=27 May 2015|url-status=live}}</ref>
*2003: SingTel sells 60% of [[Singapore Post]] (SingPost) in May during an [[Initial public offering|IPO]] in an effort to focus on its core telecommunications services business.
*2003: SingTel divested its stakes in Yellow Pages in June, its directory business to CVC Asia Pacific and J.P. Morgan Partners Asia for {{SGD|220000000}}.<ref>{{cite web|url=http://www.financeasia.com/News/32122,singtel-sells-yellow-pages.aspx|title=SingTel sells Yellow Pages|website=FinanceAsia|access-date=6 March 2019|archive-url=https://web.archive.org/web/20190308002855/https://www.financeasia.com/News/32122,singtel-sells-yellow-pages.aspx|archive-date=8 March 2019|url-status=live}}</ref>
*2003: SingTel announced that it has appointed Ericsson as the vendor for its 3G network in Singapore in July.
*2005: SingTel launches its commercial 3G services in February.
*2007: [[mio TV]] was launched commercially on 20 July 2007 and began its services on 21 July 2007.
*2007: SingTel Generation mio was launched commercially on 9 January 2007 and began its services on 21 January 2007{{Citation needed|date=October 2022}}
* 2008: SingTel and Apple jointly announced that SingTel will be the first mobile operator to launch the [[iPhone 3G]] and its services to Singapore in June.<ref name="Apple">{{cite web|title=SingTel and Apple to Bring iPhone 3G to Singapore|url=https://www.apple.com/pr/library/2008/06/09singtel.html|publisher=[[Apple Inc.|Apple]]|access-date=14 September 2010|url-status=dead|archive-url=https://web.archive.org/web/20101116014357/https://www.apple.com/pr/library/2008/06/09singtel.html|archive-date=16 November 2010}}</ref>
* In the month of June, SingTel becomes the title sponsor of the inaugural [[Singapore Grand Prix]] in Singapore.
* On 10 July 2009, SingTel launched the [[iPhone 3GS]] commercially in Singapore.<ref>{{cite web|title=SingTel Press Release|url=http://home.singtel.com/news_centre/news_releases/2009_07_03a.asp|publisher=SingTel|access-date=29 September 2010|url-status=dead|archive-url=https://web.archive.org/web/20091215233032/http://home.singtel.com/news_centre/news_releases/2009_07_03a.asp|archive-date=15 December 2009}}</ref>

===2011–2014===
[[File:Singtel tower.jpg|thumb|200px|Singtel cell tower located in the [[Singapore Polytechnic]]]]
* In May 2011, SingTel announced that they will be aiming to double the size of its satellite business, with two additional launches by 2013.<ref>{{cite web |url=http://www.telecomasia.net/content/singtel-aims-double-satellite-business |title=SingTel aims to double satellite business &#124; Telecom Asia |work=telecomasia.net |year=2011 |access-date=18 May 2011 |archive-url=https://web.archive.org/web/20110722141239/http://www.telecomasia.net/content/singtel-aims-double-satellite-business |archive-date=22 July 2011 |url-status=live }}</ref>
* In November 2011, SingTel launched Singapore's first [[e-book]] provider, Skoob, which was available through the web, [[iOS]] or [[Android OS|Android]].<ref>{{cite web |url=http://www.zdnetasia.com/singapore-telco-offers-countrys-first-e-book-app-62302879.htm |title=Singapore telco offers country's first e-book app |access-date=16 April 2012 |publisher=[[ZDNet]] |author=Ellyne Phneah |date=15 November 2011 |archive-url=https://web.archive.org/web/20120415074510/http://www.zdnetasia.com/singapore-telco-offers-countrys-first-e-book-app-62302879.htm |archive-date=15 April 2012 |url-status=live }}</ref><ref>{{cite web|url=http://www.skoob.com.sg/|title=Official website of SingTel Skoob|website=skoob.com.sg|access-date=16 April 2012|archive-url=https://web.archive.org/web/20120503231608/http://www.skoob.com.sg/|archive-date=3 May 2012|url-status=live}}</ref>
* 2012: SingTel acquired mobile advertising technology company Amobee in March 2012 for $321&nbsp;million.<ref name="singtel 5-5-2012">{{cite news|last=Shelach|first=Shmulik|title=SingTel buys mobile ads co Amobee for $321m|url=http://www.globes.co.il/serveen/globes/docview.asp?did=1000730587&fid=1725|access-date=25 May 2012|newspaper=Globes|date=5 March 2012|archive-url=https://web.archive.org/web/20120308112535/http://www.globes.co.il/serveen/globes/docview.asp?did=1000730587&fid=1725|archive-date=8 March 2012|url-status=live}}</ref>
* 2012: SingTel secured broadcast rights for the [[2012 Summer Olympics]] and provided 15 new [[ESPN STAR Sports]] channels free of charge to its [[mio TV]] Services.
* 2012: SingTel was fined $300,000 for breaches of the Service Resiliency Code by the IDA.<ref>{{cite web|title=IDA Imposes $300,000 Financial Penalty on SingTel for Breach of The Code of Practice for Telecommunication Service Resiliency|url=https://www.ida.gov.sg/About-Us/Newsroom/Media-Releases/2012/IDA-Imposes-300000-Financial-Penalty-on-SingTel-for-Breach-of-The-Code-of-Practice-for-Telecommunication-Service-Resiliency.aspx|website=Info-communications Development Authority of Singapore|url-status=dead|archive-url=https://web.archive.org/web/20151222095203/https://www.ida.gov.sg/About-Us/Newsroom/Media-Releases/2012/IDA-Imposes-300000-Financial-Penalty-on-SingTel-for-Breach-of-The-Code-of-Practice-for-Telecommunication-Service-Resiliency.aspx|archive-date=22 December 2015}}</ref>
* Since December 2012, SingTel started providing 4G LTE services across Singapore.
* Since 1 August 2013, mio TV was officially renamed SingTel TV.
* In 2013 SingTel announced the sale of its entire 30% stake in Warid Telecom (Private) Limited to Warid Telecom Pakistan LLC which took place on 15 March 2013<ref>{{Cite web |url=http://info.singtel.com/about-us/investor-relations |title=Investor Relations - SingTel |access-date=26 March 2013 |archive-url=https://web.archive.org/web/20130318103654/http://info.singtel.com/about-us/investor-relations |archive-date=18 March 2013 |url-status=dead }}</ref>
* In 2013 SingTel was fined $180,000 for the disruption of its [[mio TV]] service where 115,000 subscribers were affected while watching the Premier League games. The problems included screen freezing, blurred images and picture distortion that happened on 13 May 2012 from 10:15&nbsp;pm. Full service quality was resumed at 12:15&nbsp;am the next day.
* In late 2013, SingTel shutdown its Skoob e-book store.<ref>{{cite web|last1=Hoffelder|first1=Nate|title=SingTel to Shut Down Skoob eBookstore on 5 November – Back Up Your eBooks|date=21 September 2013 |url=http://the-digital-reader.com/2013/09/21/singtel-shut-skoob-ebookstore-5-november-back-ebooks/|access-date=9 December 2016|archive-url=https://web.archive.org/web/20161221053037/http://the-digital-reader.com/2013/09/21/singtel-shut-skoob-ebookstore-5-november-back-ebooks/|archive-date=21 December 2016|url-status=live}}</ref>
* In 2014 SingTel was fined $6&nbsp;million for its Bukit Panjang fire in the previous year. This is the highest fine imposed on a telco in Singapore.
* In August 2014, SingTel announced it was joining forces with five other global companies, including Google, to build a super-fast undersea data cable linking the U.S. and Japan.<ref name="JapanUSA">{{cite news|title=High-speed Undersea Cable to Link US, Asia|url=http://www.thetokyonews.net/index.php/sid/224686765|date=12 August 2014|access-date=13 August 2014|publisher=The Tokyo News.Net|archive-url=https://web.archive.org/web/20140814080956/http://www.thetokyonews.net/index.php/sid/224686765|archive-date=14 August 2014|url-status=live}}</ref>
* In 2014 Bharti Airtel became first telecommunication company to serve 4G internet in India.{{Citation needed|date=October 2022}}

===2015–2019===
* On 21 January 2015, Singtel launched its new brand identity, the first in 16 years.<ref>{{cite web | url=http://info.singtel.com/about-us/news-releases/singtel-embarks-new-brand-promise-make-everyday-better-customers | title=Singtel embarks on new brand promise to 'make everyday better' for customers | publisher=Singtel | date=21 January 2015 | access-date=22 January 2015 | archive-url=https://web.archive.org/web/20150122140751/http://info.singtel.com/about-us/news-releases/singtel-embarks-new-brand-promise-make-everyday-better-customers | archive-date=22 January 2015 | url-status=dead }}</ref>
* On 19 March 2015, Singtel dismissed all connections with social media agency, [[Gush Ad|Gushcloud]]. This is after a Singapore blogger [[Xiaxue]], exposed Gushcloud's brief to its "influencers" to execute a negative campaign on [[M1 Limited|M1]] and [[Starhub]], both who are direct competitors. Singtel apologised to both companies for the campaign.<ref>{{cite web|url=https://www.todayonline.com/singapore/singtel-terminates-services-gushcloud-employee-involved-no-longer-them|title=Singtel ends relationship with Gushcloud, apologises to StarHub, M1|website=TODAYonline|access-date=6 March 2019|archive-url=https://web.archive.org/web/20190515013750/https://www.todayonline.com/singapore/singtel-terminates-services-gushcloud-employee-involved-no-longer-them|archive-date=15 May 2019|url-status=live}}</ref><ref>{{cite web | url=http://www.todayonline.com/singapore/singtel-terminates-services-gushcloud-employee-involved-no-longer-them | title=Singtel ends relationship with Gushcloud, apologises to StarHub, M1 | publisher=TodayOnline | date=19 March 2015 | access-date=24 March 2015 | archive-url=https://web.archive.org/web/20150323203814/http://www.todayonline.com/singapore/singtel-terminates-services-gushcloud-employee-involved-no-longer-them | archive-date=23 March 2015 | url-status=live }}</ref>
* On 7 April 2015, Singtel revealed it would be acquiring US cyber security firm [[Trustwave Holdings|Trustwave]] for $810&nbsp;million, its largest ever acquisition outside the telecoms sector.<ref>{{cite press release| work=Reuters| date=7 April 2015| title=Singtel buying U.S. cyber security firm Trustwave for $810&nbsp;million| url=https://www.reuters.com/article/us-singtel-m-a-trustwave-idUSKBN0MY2C820150408| access-date=2 July 2017| archive-url=https://web.archive.org/web/20151001143316/http://www.reuters.com/article/2015/04/08/us-singtel-m-a-trustwave-idUSKBN0MY2C820150408| archive-date=1 October 2015| url-status=live}}</ref>
* On 22 April 2015, the Singtel announced plans to delist from the [[Australian Securities Exchange]] due to low trading volumes.<ref>{{cite news|last1=Ramli|first1=David|title=Singtel-Optus to delist from ASX amid low trading volumes|url=http://www.theage.com.au/business/markets/singteloptus-to-delist-from-asx-amid-low-trading-volumes-20150421-1mphrn.html|access-date=2 June 2015|work=The Age|date=22 April 2015|archive-url=https://web.archive.org/web/20150525105859/http://www.theage.com.au/business/markets/singteloptus-to-delist-from-asx-amid-low-trading-volumes-20150421-1mphrn.html|archive-date=25 May 2015|url-status=live}}</ref>
* In April 2015, Singtel released a new [[Skype]] and [[WhatsApp]] competitor called Wavee. It allows users to make voice and video calls and send instant messages.<ref>{{cite press release| publisher=TechCrunch| date=9 April 2015| title=Southeast Asian Telecom Giant Singtel Releases Wavee App, A Skype And WhatsApp Competitor| url=https://techcrunch.com/2015/04/09/singtel-wavee/| access-date=25 June 2017| archive-url=https://web.archive.org/web/20170706123404/https://techcrunch.com/2015/04/09/singtel-wavee/| archive-date=6 July 2017| url-status=live}}</ref>
* In May 2015, Singtel was issued a 'stern warning' by [[Infocomm Development Authority of Singapore|Infocomm Development Authority]] (IDA) for a negative marketing campaign against its competitors: [[M1 Limited]] and [[Starhub]] through a marketing agency, Gushcloud.<ref>{{cite news|title=Singtel given 'stern warning' by IDA for Gushcloud smear campaign against M1, Starhub| newspaper=The Straits Times | date=18 May 2015 |url=http://www.straitstimes.com/news/singapore/more-singapore-stories/story/singtel-given-stern-warning-gushcloud-smear-campaign-aga#xtor=CS1-10|access-date=18 May 2015|archive-url=https://web.archive.org/web/20150520013017/http://www.straitstimes.com/news/singapore/more-singapore-stories/story/singtel-given-stern-warning-gushcloud-smear-campaign-aga#xtor=CS1-10|archive-date=20 May 2015|url-status=live | last1=Chew | first1=Hui Min }}</ref> Singtel was required to "ensure appropriate management oversight and control over its marketing and advertising campaigns".<ref>{{cite web|title=Singtel Warned Over Negative Marketing Campaign Conducted via Gushcloud|url=https://www.ida.gov.sg/About-Us/Newsroom/Media-Releases/2015/Singtel-Warned-Over-Negative-Marketing-Campaign|website=Info-communications Development Authority of Singapore|access-date=2 June 2015|url-status=dead|archive-url=https://web.archive.org/web/20151222101623/https://www.ida.gov.sg/About-Us/Newsroom/Media-Releases/2015/Singtel-Warned-Over-Negative-Marketing-Campaign|archive-date=22 December 2015}}</ref>
* On 11 April 2017, it was reported that [[Synack]] had raised $21&nbsp;million from [[Microsoft Ventures]], [[Hewlett Packard Enterprise]], and Singtel.<ref name=ft-hacker>{{cite news |last=Kuchler |first=Hannah |date=11 April 2017 |title=Hacker-for-hire company Synack raises $21m |url=https://www.ft.com/content/b1c64290-1e35-11e7-b7d3-163f5a7f229c |work=[[Financial Times]] |access-date=30 April 2017 |archive-url=https://web.archive.org/web/20170424140807/https://www.ft.com/content/b1c64290-1e35-11e7-b7d3-163f5a7f229c |archive-date=24 April 2017 |url-status=live }}</ref>
* On 18 January 2019, Singtel was listed in the Bloomberg Gender-Equality Index (GEI) for the first time in recognition of [[gender equality]].<ref>{{cite web |last1=Seow |first1=Joanna |title=Four local firms lauded for furthering women's equality |url=https://www.straitstimes.com/singapore/manpower/four-local-firms-lauded-for-furthering-womens-equality |website=The Straits Times |access-date=23 July 2020 |date=19 January 2019}}</ref>

=== 2020–present ===

* In March 2020, Singtel announced a US$30 million investment in a new joint venture by Singtel, Thai Telco [https://www.ais.th/en/ AIS] and South Korea's [[SK Telecom]] in a gaming company called [https://storms.com Storms].<ref>{{Cite web |date=25 Nov 2020 |title=Can Singtel make waves in Southeast Asia's gaming market? |url=https://kr-asia.com/can-singtel-make-waves-in-southeast-asias-gaming-market |website=kr-asia}}</ref>
* On 1 October 2020, Singtel announced the appointment of Yuen Kuan Moon as group CEO to replace current chief [[Chua Sock Koong]] after her retirement in January 2021.<ref>{{Cite web|last=Yu|first=Eileen|title=Singtel appoints consumer head as new group CEO|url=https://www.zdnet.com/home-and-office/networking/singtel-appoints-consumer-head-as-new-group-ceo/|access-date=2020-10-01|website=ZDNet|language=en}}</ref>
*On 4 December 2020, it was announced that the Singtel and ride-hailing firm Grab consortium had been awarded a [[digital banking]] licence and would start operating in 2022.<ref>{{Cite web|date=2020-12-04|title=Singapore picks Grab, Ant Group, others for four digital banking licenses|url=https://www.cnbc.com/2020/12/04/singapore-picks-grab-ant-group-others-for-digital-banking-licenses.html|access-date=2020-12-10|website=CNBC|language=en}}</ref>
*On 10 June 2022, three employees of Amobee's email marketing division were convicted of federal crimes related to illegally spamming through hijacked IP addresses.<ref>{{cite web |title=Spammers Plead Guilty, Company Forfeits $4.9 Million |date=10 June 2022 |url= https://www.justice.gov/usao-sdca/pr/spammers-plead-guilty-company-forfeits-49-million |publisher=United States Department of Justice |access-date=10 June 2022}}</ref>
*In October 2024, Singtel unveiled RE:AI, a cloud service that aimed to make AI technologies widely accessible to organisations.<ref>{{Cite web |last=Daws |first=Ryan |date=2024-10-10 |title=Singtel launches RE:AI cloud service to democratise AI |url=https://www.telecomstechnews.com/news/singtel-launches-reai-cloud-service-democratise-ai/ |access-date=2024-10-14 |website=Telecoms Tech News |language=en-GB}}</ref>

==Network and infrastructure==
Singtel's international submarine cable network provides connections from Singapore to more than 100 countries. It is a major investor in many of the world's submarine cable systems, such as [[SEA-ME-WE 3|South-East Asia&nbsp;– Middle East&nbsp;– Western Europe 3]] Cable Network, [[SEA-ME-WE 4|South-East Asia&nbsp;– Middle East&nbsp;– Western Europe 4]] Cable Network, [[APCN 2]], China-US, Japan-US, [[Southern Cross Cable]] and [[Unity (cable system)]]. Unity Cable Network was commissioned in March 2010.{{citation needed|date=July 2021}}

In January 2010, Singtel announced it had signed an agreement to join a consortium to build and operate the new [[SJC (cable system)]] system (SJC). The construction of the SJC cable system started in April 2011 and became operational in June 2013. The SJC has a length of 8,900&nbsp;km which could extend up to 9,700&nbsp;km linking up to seven countries or territories. The SJC is connected with the Unity Cable Network and is designed to deliver the lowest latency connectivity between Asia and the US, specifically from Singapore to Los Angeles.{{citation needed|date=April 2015}}

As of fourth quarter of 2014, Singtel Mobile's 4G outdoor coverage was at 99.41%, ranked first followed by M1's 99.04%, and Starhub's 98.85%.<ref>{{cite web|title=IDA Nationwide 4G Outdoor Mobile Service Coverage Results in Q4 2014|url=http://www.ida.gov.sg/~/media/Files/About%20Us/Newsroom/Media%20Releases/2015/0213_4g_dc/AnnexA|access-date=29 July 2015|archive-url=https://web.archive.org/web/20150402030134/http://www.ida.gov.sg/~/media/Files/About%20Us/Newsroom/Media%20Releases/2015/0213_4g_dc/AnnexA|archive-date=2 April 2015|url-status=dead}}</ref>

Singtel signed a partnership with NETSTARS, (a Tokyo-based mobile payment technology company) in March 2019. This will allow travelers to use their home mobile wallets on Singtel's VIA network to pay digitally at stores in Japan.<ref>{{Cite news|url=https://www.reuters.com/article/us-singtel-payments-idUSKCN1QZ0JO|title=Singtel signs deal to expand mobile wallet alliance to Japan|date=2019-03-18|work=Reuters|access-date=2019-03-18|language=en|archive-url=https://web.archive.org/web/20190319025041/https://www.reuters.com/article/us-singtel-payments-idUSKCN1QZ0JO|archive-date=19 March 2019|url-status=live}}</ref>

=== Singtel's mobile network in Singapore ===
{| class="wikitable sortable"
|+Frequencies used on Singtel Network in Singapore
|-
! Band !! Frequency !! Frequency Width<br>(MHz) !! Protocol !! Notes
|-
| 8 (900&nbsp;MHz) || (905~915; 950~960) || 2x10 || [[HSPA+]], [[LTE (telecommunication)|LTE]] ||
|-
| 28 (700&nbsp;MHz) || (703~748; 758~803) || 2x20 || [[LTE (telecommunication)|LTE]], [[5G NR]] ||
|-
| 3 (1800&nbsp;MHz) || (1710~1740; 1805~1835) || 2x30 || [[LTE (telecommunication)|LTE]] ||
|-
| 1 (2100&nbsp;MHz) || (1935.1~1955.1; 2125.1~2145.1) || 2x20 || [[5G NR]] || 
|-
| 7 (2600&nbsp;MHz) || (2540~2560; 2660~2680) || 2x20 || [[LTE (telecommunication)|LTE]] ||
|-
| 38 / 41 (2600&nbsp;MHz) || 2600~2615 || 15 || [[LTE (telecommunication)|LTE]] ||
|-
| 78 (3.5&nbsp;GHz) || 3450~3550 || 100 || [[5G NR]] || 
|}

==Key operating companies==
The Singtel group of companies includes subsidiaries, associated companies, as well as shareholdings in overseas entities. Its mainstay is in the mobile phone industry, where it has a total subscription base of 638 million as of 31 March 2017:<ref name="cust base" />

===Regional mobile subsidiaries===
{|class="wikitable"
!
!
! colspan="10" |Country Mobile Share Data
|-
!Mobile company||Country||Stake<ref name=":2">{{cite web | url=https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2019/Q4FY19_Factsheet.pdf | title=Investor factsheet March 2019 | access-date=11 September 2020 | archive-url=https://web.archive.org/web/20200313214509/https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2019/Q4FY19_Factsheet.pdf | archive-date=13 March 2020 | url-status=live }}</ref>||Market Position<ref name=":2" />
!as of 31 March 2023<ref>{{Cite web |date= |title=Singtel Investor Factsheet 2023 |url=https://www.singtel.com/content/dam/singtel/investorRelations/financialResults/2023/h2fy23/FY23_Factsheet_vFF.pdf |access-date=8 November 2023}}</ref>
!as of 31 March 2022<ref>{{Cite web |title=Singtel Investor Factsheet 2022 |url=https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2022/FY22_Factsheet_v3.pdf |access-date=22 November 2022}}</ref>
!as of 31 March 2021<ref>{{Cite web |title=Singtel Investor Factsheet 2021 |url=https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2021/H2FY21-Factsheet.pdf |access-date=22 November 2022}}</ref>
!as of 31 March 2020<ref>{{Cite web |title=Singtel Investor Factsheet 2020 |url=https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2019/Q4FY20_Factsheet_Final.pdf |access-date=22 November 2022}}</ref>
!as of 31 March 2019<ref name=":2" />
!as of 30 June 2018<ref>{{cite web | url=https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2019/Q1FY19_Factsheet.pdf | title=Investor factsheet June 2018 | access-date=11 September 2020 | archive-url=https://web.archive.org/web/20210609120048/https://www.singtel.com/content/dam/singtel/investorRelations/factsheetsAndPresentation/2019/Q1FY19_Factsheet.pdf | archive-date=9 June 2021 | url-status=live }}</ref>||as of 31 March 2017<ref name="singtel.com">{{cite web | access-date=19 September 2017 | archive-date=6 August 2019 | archive-url=https://web.archive.org/web/20190806123554/https://www.singtel.com/content/dam/singtel/investorRelations/annualReports/2017/singtelar17-full-AR.pdf | url=https://www.singtel.com/content/dam/singtel/investorRelations/annualReports/2017/singtelar17-full-AR.pdf | title=Connecting Your World ANNUAL REPORT 2017 | url-status=live}}</ref>||as of 31 March 2016<ref>{{cite web | url=https://www.singtel.com/content/dam/singtel/investorRelations/annualReports/2016/Singtel_AR2016.pdf | title=Transforming with You Annual Report 2016 | access-date=11 September 2020 | archive-url=https://web.archive.org/web/20190806123554/https://www.singtel.com/content/dam/singtel/investorRelations/annualReports/2016/Singtel_AR2016.pdf | archive-date=6 August 2019 | url-status=live }}</ref>
|-
|[[Advanced Info Service]]||[[Thailand]]|| 23% || No. 1
|47.8%
|46%
|46%
|45.2%
|45%
|45%|| 45% || 47%
|-
|[[Bharti Airtel]]||[[India]]|| 32% || No. 2
|32.4%
|31.6%
|29.8%
|28.4%
|28%
|31%|| 23% || 24%
|-
|[[Globe Telecom]]||[[Philippines]]|| 47% || No. 1
|56.4%
|55.4%
|52.6%
|55%
|57%
|52%|| 48% || 46%
|-
|[[Optus]]||Australia|| 100% || No. 2
|31.2%
|31.3%
|31.4%
|(no data)
|(no data)
|28%|| 27% || 30%
|-
|[[Telkomsel]]||[[Indonesia]]|| 30% || No. 1
|49.1%
|53.6%
|58.7%
|59.3%
|51%
|50%|| 48% || 30%
|}

===Mobile===
* Singtel Mobile Singapore Pte Ltd – operation and provision of cellular mobile telecommunications systems and services, resale of fixed line and broadband services
*[[Optus|Optus Mobile Pty Limited]] – provision of mobile phone services
**[[Virgin Mobile Australia|Virgin Mobile (Australia) Pty Limited]] – provision of mobile phone services, wholly own subsidiary of Optus

===ICT===
* [[NCS Pte Ltd|NCS]] – provision of information technology and consultancy services
* [[Alphawest]] – provision of information technology services
* [[Uecomm]] – provision of data communication services

===Digital===
* Amobee – provision of mobile advertising
* Pixable – provision of mobile photo search and aggregation services
* DataSpark – provision of big data geolocation analytics 
* Singtel Digital Media Pte Ltd (STDM) – development and management of on-line internet portal
* Singtel Idea Factory Pte Ltd – engaging in research and development, products and services development and business partnership
* Singtel Innov8 Pte Ltd – venture capital investment holding

===Internet and TV===
* SingNet – provision of internet access and pay television services
* Optus Broadband Pty Limited – provision of high speed residential internet service
* Optus Vision Pty Limited – provision of interactive television service
* Optus Internet Pty Limited – provision of internet services to retail customers
* Vividwireless Group Limited – provision of wireless broadband services

===Associate of the group===
* Singapore Post Limited – operation and provision of postal and logistics services
* Telescience Singapore Pte Ltd – sale, distribution and installation of telecommunications equipment
* Viewers Choice Pte Ltd – provision of services relating to motor vehicle rental and retail of general merchandise

== Incidents ==

=== Bukit Panjang Exchange fire ===
[[File:2013 Bukit Panjang Internet Exchange fire affected areas.svg|thumb|Areas which had disruptions to the various connectivity services from [[M1 Limited|M1]], [[StarHub]] and Singtel due to the 2013 Bukit Panjang Internet Exchange fire.]]
On 9 October 2013, a fire broke out at one of Singtel's major Internet exchanges at [[Bukit Panjang]].<ref name=":3">{{Cite web|url=https://www.zdnet.com/article/fire-at-singtel-building-disrupts-telco-atm-services/|title=Fire at SingTel building disrupts telco, ATM services|last=Huang|first=Ryan|website=ZDNet|language=en|access-date=2020-02-27|archive-url=https://web.archive.org/web/20171002084818/http://www.zdnet.com/article/fire-at-singtel-building-disrupts-telco-atm-services/|archive-date=2 October 2017|url-status=live}}</ref> The fire started at around 2 p.m. Firemen from the [[Singapore Civil Defence Force]] (SCDF) responded to the emergency call placed at 2.16pm and extinguished the fires in 20 minutes.<ref name=":3" /> After SCDF had cleared the building for access at 6pm, Singtel started repairing the damaged cable infrastructure.<ref name=":3" /> The repairs was initially assessed to be done by 10 October 2013, 7am with 33 cables of fibre strands requiring repairs. However, the repairs was slower than expected as it was difficult to identify the affected cables as visual indicators such as colour coding on the cables were rendered unusable and 116 other fibre cables required repairs as well.<ref name=":4">{{Cite web|url=https://www.todayonline.com/singapore/singtel-contingency-plan-questioned-fire-repairs-continue|title=SingTel contingency plan questioned as fire repairs continue|website=TODAYonline|access-date=2020-02-29|archive-url=https://web.archive.org/web/20131013014737/http://www.todayonline.com/singapore/singtel-contingency-plan-questioned-fire-repairs-continue|archive-date=13 October 2013|url-status=live}}</ref> Connectivity to affected customers was progressively restored as the repairs stretched into the evening.<ref name=":4" />

The damage incurred extensive connectivity issues in the [[North West Community Development Council|North Western areas of Singapore]], particularly in Bukit Batok, Bukit Panjang, Bukit Timah, Choa Chu Kang, Kranji, Marsiling, Teck Whye and Woodlands. Singtel reported 100 mobile base stations were affected, disconnecting its mobile service subscribers in the area.<ref name=":3" /> It also reported that around 60,000 fixed broadband lines, 46,000 mioTV subscribers, and 30,000 voice lines were also affected.<ref name=":5">{{Cite web|url=https://www.todayonline.com/singapore/singtel-fire-damage-more-extensive-originally-assessed|title=SingTel fire: Services fully restored by 7am tomorrow|website=TODAYonline|access-date=2020-02-27|archive-url=https://web.archive.org/web/20131016161110/http://www.todayonline.com/singapore/singtel-fire-damage-more-extensive-originally-assessed|archive-date=16 October 2013|url-status=live}}</ref> OpenNet also reported that 81 of its fibre cables were damaged, affecting 46,000 fibre connections downstream.<ref name=":5" /> Business such as [[StarHub]], [[M1 Limited|M1]], [[DBS Bank|DBS]], OpenNet and [[Singapore Pools]] saw varying levels of disruptions to their services and operations islandwide.<ref name=":3" />

The cables were reconnected on 11 October 2013.<ref>{{Cite web|url=https://www.todayonline.com/singapore/ida-begins-probe-singtel-disruption|title=IDA begins probe into SingTel disruption|website=TODAYonline|access-date=2020-02-29|archive-url=https://web.archive.org/web/20131015072012/http://www.todayonline.com/singapore/ida-begins-probe-singtel-disruption|archive-date=15 October 2013|url-status=live}}</ref> However, there were still some subscribers whose connectivity services were still disrupted as of 16 October 2013.<ref>{{Cite web|url=https://www.todayonline.com/singapore/ida-urges-telcos-focus-restoring-all-services|title=IDA urges telcos to focus on restoring all services|website=TODAYonline|access-date=2020-02-29}}</ref> StarHub indicated that some of the repaired OpenNet cables, which it relied on to carry its fibre internet services, were not connected properly.<ref name=":6">{{Cite web|url=https://www.todayonline.com/singapore/600-starhub-fibre-customers-still-affected|title=600 StarHub fibre customers still affected|website=TODAYonline|access-date=2020-02-29|archive-url=https://web.archive.org/web/20131020122445/http://www.todayonline.com/singapore/600-starhub-fibre-customers-still-affected|archive-date=20 October 2013|url-status=live}}</ref> Likewise, Singtel reported that several cables required further rectification works.<ref>{{Cite web|url=https://www.todayonline.com/singapore/singtel-fire-fibre-broadband-services-still-down-some-users|title=SingTel fire: Fibre broadband services still down for some users|website=TODAYonline|access-date=2020-02-29}}</ref> Both offered alternate connectivity solutions to the affected subscribers as a temporary measure while further work took place, with StarHub sending cable modems to its affected subscribers to connect to its then existing coaxial cable network (which could carry Internet services,<ref>{{Cite web|url=https://www.techgoondu.com/2014/08/14/starhub-coaxial-cables-now-open-for-home-networking/|title=StarHub coaxial cables now open for home networking|date=2014-08-14|website=Techgoondu|language=en-GB|access-date=2020-02-29|archive-url=https://web.archive.org/web/20151127212706/http://www.techgoondu.com/2014/08/14/starhub-coaxial-cables-now-open-for-home-networking/|archive-date=27 November 2015|url-status=live}}</ref> and was put to an end in June 2019<ref>{{Cite web|url=https://www.techgoondu.com/2018/11/01/starhub-to-cut-all-cable-services-in-june-2019-move-customers-over-to-fibre-network/|title=StarHub to cut all cable services in June 2019, move customers over to fibre network|date=2018-11-01|website=Techgoondu|language=en-GB|access-date=2020-02-29|archive-url=https://web.archive.org/web/20190824110130/https://www.techgoondu.com/2018/11/01/starhub-to-cut-all-cable-services-in-june-2019-move-customers-over-to-fibre-network/|archive-date=24 August 2019|url-status=live}}</ref>),<ref name=":6" /> and Singtel sending mobile broadband dongles.<ref>{{Cite web|url=https://www.todayonline.com/singapore/singtel-all-adsl-services-restored|title=SingTel: All ADSL services restored|website=TODAYonline|access-date=2020-02-29|archive-url=https://web.archive.org/web/20131014215457/http://www.todayonline.com/singapore/singtel-all-adsl-services-restored|archive-date=14 October 2013|url-status=live}}</ref> Singtel also announced compensation packages to its affected subscribers of its various services.<ref>{{Cite web|url=https://www.todayonline.com/singapore/singtel-announce-compensation-packages-customers-affected-fire|title=SingTel announce compensation packages for customers affected by fire|website=TODAYonline|access-date=2020-02-29|archive-url=https://web.archive.org/web/20131016213311/http://www.todayonline.com/singapore/singtel-announce-compensation-packages-customers-affected-fire|archive-date=16 October 2013|url-status=live}}</ref>

Singtel had set up a Board Committee of Inquiry (BCOI) to investigate the fire, with [[Bobby Chin Yoke Choong]] as the chairman. Additionally, the BCOI would also benchmark current network design and contingency processes against international best practices and standards, and recommend appropriate improvements to prevent future occurrences and strengthen network resilience.<ref>{{Cite web|url=https://www.todayonline.com/singapore/singtel-board-sets-committee-inquiry-bukit-panjang-fire|title=SingTel Board sets up Committee of Inquiry into Bukit Panjang fire|website=TODAYonline|access-date=2020-02-29}}</ref> Separately, IDA had launched an investigation into the fire as well.<ref>{{Cite web|url=https://www.todayonline.com/singapore/ida-launch-full-investigation-fire-singtels-bukit-panjang-exchange|title=IDA launches full investigation into fire at SingTel facility|website=TODAYonline|access-date=2020-02-29}}</ref> Questions were raised in the public on the infrastructure design of the telecommunications network.<ref name=":7">{{Cite web|url=https://www.straitstimes.com/singapore/burning-issues-after-the-singtel-fire|title=Burning issues after the SingTel fire|last=Tham|first=Irene|date=2013-10-27|website=The Straits Times|language=en|access-date=2020-02-29}}</ref> The fire exposed the fact that Bukit Panjang exchange was a single point of failure as connectivity services of 3 major ISPs were affected due to it, with the affected OpenNet fibre cables affecting a wide area across the nation.<ref name=":7" />

Preliminary findings realised by Singtel on 6 November 2013 indicated that the fire broke out during a maintenance work at one of the lead-in pipes located in the cable chamber. The fire was caused by an employee not following the maintenance procedures as well as the use of an unauthorised blowtorch.<ref name=":8">{{Cite web|url=https://www.straitstimes.com/singapore/singtel-fire-incident-caused-by-employee-who-did-not-follow-maintenance-procedures|title=SingTel fire: Incident caused by employee who did not follow maintenance procedures|last=Tham|first=Irene|date=2013-11-06|website=The Straits Times|language=en|url-status=live|archive-url=https://web.archive.org/web/20190912043422/https://www.straitstimes.com/singapore/singtel-fire-incident-caused-by-employee-who-did-not-follow-maintenance-procedures|archive-date=12 September 2019|access-date=2020-02-29}}</ref> Maintenance protocols had since strengthened, limiting maintenance work which required heat to be applied and reinforcing training on safety requirements and operations.<ref name=":8" /> The BCOI report, dated 9 December 2013,<ref>{{Cite web|url=https://repository.shareinvestor.com/rpt_view.pl/id/663fa62b256cb4a679e5bcfc3d548c53ec9e0198147dc8a047434292575b643d/type/si_news|title=SINGAPORE TELECOMMUNICATIONS LIMITED REPORT OF THE BOARD COMMITTEE OF INQUIRY FIRE AT THE BUKIT PANJANG EXCHANGE ON 9 October 2013|date=9 October 2013|access-date=29 February 2020}}</ref> was released on 17 December 2013.<ref name=":9">{{Cite web|url=https://sbr.com.sg/telecom-internet/news/singtel-releases-full-inquiry-findings-bukit-panjang-fire|title=SingTel releases full inquiry findings on Bukit Panjang fire|website=Singapore Business Review|date=17 December 2013 |access-date=2020-02-29}}</ref><ref>{{Cite web|url=https://www.businesstimes.com.sg/top-stories/hot-stuff-coi-report-breaks-down-singtel-blaze|title=Hot stuff: COI report breaks down SingTel blaze|date=2013-12-17|website=The Business Times|language=en|access-date=2020-02-29}}</ref> The report covered three main areas: fire prevention in exchanges, network reliability and resiliency, as well as public relations and communications.<ref name=":9" /> Singtel's board has accepted the BCOI's findings and would implement its recommendations.<ref name=":9" /> In Singtel's 2015 annual report, it was reported that the BCOI was satisfied that all the recommendations of the BCOI had been followed up and adequately addressed.<ref>{{Cite web|url=https://www.singtel.com/content/dam/singtel/investorRelations/annualReports/2015/Singtel_Annual_Report_2015.pdf|title=Singtel Annual Report 2015|date=2015|page=68|access-date=29 February 2020|archive-url=https://web.archive.org/web/20200229122703/https://www.singtel.com/content/dam/singtel/investorRelations/annualReports/2015/Singtel_Annual_Report_2015.pdf|archive-date=29 February 2020|url-status=live}}</ref>

Singtel was later fined $6 million Singapore dollars for the fire incident, it is the largest fine for a telco company in Singapore history. National fibre broadband network builder OpenNet and CityNet - the trustee manager of a Singtel unit that owns OpenNet - have also been fined $200,000 and $300,000, respectively, for failing to comply with safety procedures and restore services promptly.<ref>{{Cite web|url=https://www.straitstimes.com/singapore/singtel-fined-a-record-6m-for-bukit-panjang-exchange-fire-opennet-and-citynet-also-fined|title=SingTel fined a record $6m for Bukit Panjang exchange fire; OpenNet and CityNet also fined|last=Tham|first=Irene|date=2014-05-06|website=The Straits Times|language=en|url-status=live|archive-url=https://web.archive.org/web/20200224101434/https://www.straitstimes.com/singapore/singtel-fined-a-record-6m-for-bukit-panjang-exchange-fire-opennet-and-citynet-also-fined|archive-date=24 February 2020|access-date=2020-02-29}}</ref>

=== Gushcloud marketing scandal ===
On 14 March 2015, [[Xiaxue]], a Singapore-based blogger, revealed on her blog instructions from [[Gushcloud International|Gushcloud]] to its network of bloggers to post complaints about the mobile services of Singtel's rivalling mobile service providers, [[StarHub]] and [[M1 Limited|M1]], on social media, in a marketing effort to drive subscriptions of a new mobile service plan targeted at youths by Singtel.<ref name=":10">{{Cite web|url=https://mothership.sg/2015/03/xiaxues-expose-part-2-gushcloud-asked-bloggers-to-smear-m1-starhub-to-promote-singtel/|title=Xiaxue's exposé Part 2: Gushcloud asked bloggers to smear M1, StarHub to promote SingTel|website=Mothership.sg|language=en-US|access-date=2020-02-29}}</ref> Along with her revelation, there were many samples of Gushcloud's bloggers taking up the offer and posting complaints up on social media services.<ref name=":10" /> Upon the release of the complaints, both Starhub and M1 called on IDA to investigate the matter.<ref>{{Cite news |date=19 March 2015 |title=Singtel CEO apologises to M1, StarHub; terminates services of Gushcloud over negative marketing campaign |url=https://www.straitstimes.com/singapore/singtel-ceo-apologises-to-m1-starhub-terminates-services-of-gushcloud-over-negative |access-date=3 December 2024 |work=[[The Straits Times]]}}</ref>

Initially denying that it had issued the brief,<ref>{{Cite web|url=https://www.mumbrella.asia/2015/03/gushcloud-exposed-for-paying-celebrity-bloggers-to-write-negatively-about-singtel-competitors-singtel-denies-issuing-brief|title=Xiaxue exposes Gushcloud for paying celebrity bloggers to write negatively about Singtel rivals, Singtel denies issuing brief|last=Hicks|first=Robin|date=2015-03-17|website=Mumbrella Asia|language=en-US|access-date=2020-02-29}}</ref> Singtel issued an apology, of which Starhub and M1 had accepted.<ref>{{Cite web|url=https://tnp.straitstimes.com/news/singtel-apologises-smear-campaign-against-rivals|title=Singtel apologises for smear campaign against rivals|last=Dhanaraj|first=Jennifer|date=2015-03-18|website=The New Paper|language=en|access-date=2020-02-29}}</ref><ref>{{Cite news |last=Tham |first=Irene |date=2015-03-20 |title=StarHub, M1 accept Singtel CEO's public apology for smear campaign |url=https://www.straitstimes.com/singapore/starhub-m1-accept-singtel-ceos-public-apology-for-smear-campaign |access-date=2025-09-18 |work=[[The Straits Times]] |language=en |issn=0585-3923}}</ref> Singtel also terminated its employee who had worked with Gushcloud on the campaign as the employee did not adhere to Singtel's professional standards and values.<ref name=":11">{{Cite web|url=https://www.todayonline.com/singapore/singtel-terminates-services-gushcloud-employee-involved-no-longer-them|title=Singtel ends relationship with Gushcloud, apologises to StarHub, M1|website=TODAYonline|access-date=2020-02-29}}</ref> At the same time, Singtel ended its relationship with Gushcloud.<ref name=":11" /> Vincent Ha, Gushcloud's chief executive, released an apology through the firm on the firm's use of negative messaging and yet criticising Xiaxue's expose for "doing more harm than good to our industry".<ref name=":12">{{Cite web|url=https://www.straitstimes.com/singapore/singtel-and-gushcloud-say-sorry-for-negative-marketing-campaign|title=Singtel and Gushcloud say sorry for negative marketing campaign|last=migration|date=2015-03-17|website=The Straits Times|language=en|access-date=2020-02-29}}</ref> Xiaxue refuted the statement, saying he was trying to divert blame and calling Gushcloud's actions as "not ethical".<ref name=":12" /> Several bloggers involved issued apologies on their platforms as well.<ref name=":11"/>

=== Data breach incident ===
On 12 February 2020, Singtel was fined $9,000 Singapore dollars for a data breach incident involving the My Singtel mobile app, a smartphone application owned by Singtel. The incident began from Singtel encountering a technical issue during its migration to a new billing system in early 2018, resulting in the personal data of 750 mobile subscribers being exposed. Of these, 39 subscribers' personal data were in fact accessed by other subscribers over a period of about 11 hours.<ref>{{Cite news|url=https://www.straitstimes.com/business/companies-markets/singtel-sph-magazines-and-others-fined-66000-for-data-protection-breaches|title=Singtel, SPH Magazines and others fined $66,000 for data protection breaches, Companies & Markets News & Top Stories - the Straits Times|newspaper=The Straits Times |date=12 February 2020 |url-status=live|archive-url=https://web.archive.org/web/20200214075216/https://www.straitstimes.com/business/companies-markets/singtel-sph-magazines-and-others-fined-66000-for-data-protection-breaches|archive-date=14 February 2020|access-date=25 February 2020}}</ref>

=== Assistant manager leaking client data and thieving ===
Pleo Sherwin Cubos, an assistant manager, obtained illegal loan of [[Singapore dollar|SGD]]$500 from an unlicensed moneylender in January 2020. Due to the high interest rate, Cubos borrowed from other unlicensed moneylenders to repay the loan and his debt eventually snowballed to $3,000. He was later harassed by the moneylenders and one of the moneylender offered to stop his harassment if Cubos was to access Singtel's database to illegally obtained the phone numbers of several Singtel customers. Between 20 February 2020 to 25 April 2020, Cubos illegally accessed 27clients' data in the Singtel database and send the data of six clients to the moneylender. In March and April 2020, Cubos pawned three iPads that belong to Singtel for at least $250 Singapore dollars and spent the money on his personal expenses.

Cubos' supervisor later discovered his offences and filed a police report on 2 May 2020. Cubos was then charged and pleaded guilty to one count each of assisting a loan shark and criminal breach of trust charge on 30 December 2020. He was sentenced to imprisonment for three months and three weeks and fined $30,000 Singapore dollars.<ref>{{Cite web |last=Alkhatib |first=Shaffiq |date=2020-12-31 |title=Jail, fine for man who gave loan shark telco customers' details |url=https://www.straitstimes.com/singapore/courts-crime/jail-fine-for-man-who-gave-loan-shark-telco-customers-details |access-date=2021-01-17 |website=[[The Straits Times]] |language=en}}</ref>

=== Retail consultant selling client data ===
Kelvin Foo Cheek Ann was a retail consultant at the Singtel outlet in Parkway Parade. Between 2014 and July 2017, he obtained Singtel's client data from Singtel's system without authorization and sold the data to his acquaintance, Lee Cheng Yan, as requested. Lee offered him $20 Singapore dollars for each mobile number checked on the system. All clients whose data sold were later received harassment calls, messages, and strangers appearing at their homes and demanding money.

Foo took a total of $180 Singapore dollars of bribes from Lee. Foo pleaded guilty to one charge of corruption, five charges of unauthorized access to Singtel's system, and 10 charges were taken into consideration during sentencing.<ref>{{Cite web|title=Retail consultant jailed for selling details of Singtel customers, who were later harassed|url=https://www.channelnewsasia.com/news/singapore/singtel-customers-harassed-retail-consultant-jailed-14043504|access-date=2021-01-31|website=CNA|language=en}}</ref>

=== Zero-day attack ===
On 11 February 2021, Singtel issued a statement admitting the company had been attacked by hackers in [[Zero-day (computing)|Zero-day attack]] which resulted in a data breach.<ref>{{Cite web |title=Media Statement relating to Accellion's FTA Security Incident - Singtel |url=https://www.singtel.com/about-Us/news-releases/media-statement-relating-to-acelions-fta-security-incident-.html |access-date=2021-02-27 |website=www.singtel.com |language=en}}</ref> Singtel CEO Yuen Kuan Moon issued a public apology regarding the incident, which was caused by a vulnerability in an [[Accellion]] file-sharing system used by Singtel. Accellion issued its first alert of the exploits in December 2020, Singtel then applied a series of patches provided by Accellion to resolve the vulnerability. On 23 January 2021, Accellion stated that a new vulnerability had emerged and patches previously applied in December 2020 are ineffective. Singtel immediately took its system offline since. Singtel's attempt to patch the new vulnerability in the FTA system on 30 January 2021 triggered an anomaly alert, and Accellion later informed that the system might have been breached. Singtel's investigations later confirmed the system was breached and identified 20 January 2021 as the occurrence day.<ref>{{Cite web |title=Nearly 130,000 Singtel customers' personal information, including NRIC details, stolen in data breach |url=https://www.channelnewsasia.com/news/singapore/singtel-data-breach-customer-information-stolen-nric-14219268 |access-date=2021-02-27 |website=CNA |language=en}}</ref><ref>{{Cite web |title=Singtel says standalone third-party file-sharing system hacked |url=https://www.businesstimes.com.sg/companies-markets/singtel-says-standalone-third-party-file-sharing-system-hacked |access-date=2021-02-27 |website=www.businesstimes.com.sg|date=11 February 2021 }}</ref><ref>{{Cite web |title=Singtel Suffers Zero-Day Cyberattack, Damage Unknown |url=https://threatpost.com/singtel-zero-day-cyberattack/163938/ |access-date=2021-02-27 |website=threatpost.com |date=12 February 2021 |language=en}}</ref>
{| class="wikitable"
|+Data stolen in the breach
!Type
!Amount
|-
|Singtel's customer's data, including NRIC, date of birth, name, contact number and address.
|129000 customers
|-
|Bank account info of former Singtel employees.
|28 employees
|-
|Credit card details of staff of a cooperate customers with Singtel mobile lines.
|45 staffs
|-
|Information of enterprises.
|23 enterprises
|}

=== Amobee executives plead guilty to hijacking IP addresses in order to send illegal spam ===
On 10 June 2022, three employees of the affiliate marketing platform Amobee pleaded guilty in federal court to hijacking Internet Protocol (IP) addresses to send unsolicited commercial email messages, commonly known as “spam.”<ref>{{Cite web|title=Spammers Plead Guilty, Company Forfeits $4.9 Million|url=https://www.justice.gov/usao-sdca/pr/spammers-plead-guilty-company-forfeits-49-million|access-date=2020-10-13|website=United States Department of Justice|language=en}}</ref>

=== Volt Typhoon attack ===
In June 2024, Singtel was breached by China's [[Volt Typhoon]] [[advanced persistent threat]].<ref>{{Cite news |last1=Robertson |first1=Jordan |last2=Manson |first2=Katrina |date=2024-11-05 |title=Chinese Group Accused of Hacking Singtel in Telecom Attacks |url=https://www.bloomberg.com/news/articles/2024-11-05/chinese-group-accused-of-hacking-singtel-in-telecom-attacks |access-date=2024-11-05 |work=[[Bloomberg News]] |language=en}}</ref> Following a report by [[Bloomberg News]] in November 2024, Singtel responded that it had "eradicated" malware from the threat.<ref>{{Cite web |date=5 November 2024 |title=Singtel detected and 'eradicated' malware said to be from Chinese hacking group |url=https://www.channelnewsasia.com/singapore/singtel-malware-chinese-hacking-group-volt-typhoon-4724931 |access-date=2024-11-05 |website=[[CNA (TV network)|CNA]] |language=en}}</ref>

== References ==
{{reflist}}

== External links ==
{{Commons category|Singapore Telecommunications}}
{{Library resources box
 |onlinebooks=no
 |by=yes
 }}
* {{Official website}}
* {{Official website|https://web.archive.org/web/20141012160743/http://info.singtel.com/business/singtel-global-offices|Singtel Global Offices}}
* {{Official website|http://innov8.singtel.com|Singtel Innov8}}

{{Singapore mobile phone companies}}
{{Internet service providers of Singapore}}
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