Editing London Underground (section)

===Wi-Fi and mobile phone reception===
In mid-2012, London Underground, in partnership with [[Virgin Media]], trialled [[Wi-Fi]] hotspots in many stations, but not in the tunnels, that allowed passengers free internet access. The free trial proved successful and was extended to the end of 2012,<ref>{{cite news |work=Metro |location=London |url=http://www.metro.co.uk/tech/915263-virgin-media-extends-free-wi-fi-on-london-underground-until-2013 |title=Virgin Media extends free wi-fi on London Underground until 2013 |date=17 October 2012 |access-date=10 November 2012 |archive-date=20 November 2012 |archive-url=https://web.archive.org/web/20121120112803/http://www.metro.co.uk/tech/915263-virgin-media-extends-free-wi-fi-on-london-underground-until-2013 |url-status=dead }}</ref> whereupon it switched to a service freely available to subscribers to Virgin Media and others, or as a paid-for service.<ref>{{cite web |url=http://www.tfl.gov.uk/corporate/projectsandschemes/23939.aspx |title=Station Wifi |publisher=Transport for London |access-date=12 March 2013 |url-status=dead |archive-url=https://web.archive.org/web/20130225061959/http://www.tfl.gov.uk/corporate/projectsandschemes/23939.aspx |archive-date=25 February 2013}}</ref> It was not previously possible to use mobile phones on most parts of the Underground (excluding services running overground or occasionally sub-surface, depending on the phone and carrier) using native [[2G]], [[3G]] or [[4G]] networks, and a project to extend coverage before the [[2012 Olympics]] was abandoned because of commercial and technical difficulties.<ref>{{cite news |url=https://www.theguardian.com/politics/2011/apr/01/mobile-network-london-underground-shelved |title=Plans for mobile network on London underground shelved |newspaper=The Guardian |date=1 April 2011 |access-date=1 April 2013 |author=Mulholland, Hélène |location=London |archive-date=23 May 2021 |archive-url=https://web.archive.org/web/20210523143145/https://www.theguardian.com/politics/2011/apr/01/mobile-network-london-underground-shelved |url-status=live }}</ref>

In March 2020, [[2G]], [[3G]] and [[4G]] signal was made available on parts of the Jubilee line, between Westminster and Canning Town, throughout the stations and tunnels as part of an initial trial.<ref>{{Cite press release|url=https://tfl.gov.uk/info-for/media/press-releases/2019/july/4g-on-jubilee-line-tunnel-section-from-march-2020|title=4G on Jubilee line tunnel section from March 2020|website=Transport for London|access-date=3 August 2020|archive-date=10 May 2021|archive-url=https://web.archive.org/web/20210510121751/https://tfl.gov.uk/info-for/media/press-releases/2019/july/4g-on-jubilee-line-tunnel-section-from-march-2020|url-status=live}}</ref>

In June 2021, Vodafone dropped London Underground Wi-Fi connectivity across the entire network.<ref>{{Cite web |last=Jackson |first=Mark |date=17 June 2021 |title=Vodafone UK Quietly Scrap London Underground WiFi Support |url=https://www.ispreview.co.uk/index.php/2021/06/vodafone-uk-quietly-scrap-london-underground-wifi-support.html |access-date=19 August 2023 |website=ISPreview UK |language=en |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234719/https://www.ispreview.co.uk/index.php/2021/06/vodafone-uk-quietly-scrap-london-underground-wifi-support.html |url-status=live }}</ref><ref>{{cite web |last=Mansfield |first=Ian |date=17 June 2021 |title=Vodafone drops WiFi coverage from the London Underground |url=https://www.ianvisits.co.uk/articles/vodafone-drops-wi-fi-coverage-from-the-london-underground-44397/ |access-date=19 August 2023 |website=ianVisits |language=en-GB |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234718/https://www.ianvisits.co.uk/articles/vodafone-drops-wi-fi-coverage-from-the-london-underground-44397/ |url-status=live }}</ref> This was restored in April 2023 after control of the Wi-Fi connectivity moved from Virgin Media to [[BAI Communications|Boldyn Networks]] as part of their 20-year concession deal with Transport for London, providing data connectivity across the entire network.<ref>{{Cite web |last=Jackson |first=Mark |date=3 April 2023 |title=Vodafone UK Reintroduced Public WiFi to London Underground |url=https://www.ispreview.co.uk/index.php/2023/04/vodafone-uk-reintroduced-public-wifi-to-london-underground.html |access-date=19 August 2023 |website=ISPreview UK |language=en |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234717/https://www.ispreview.co.uk/index.php/2023/04/vodafone-uk-reintroduced-public-wifi-to-london-underground.html |url-status=live }}</ref>

In December 2022, additional mobile coverage, including [[5G]] connectivity, launched at a small subset of stations and tunnel segments on the [[Central line (London Underground)|Central line]], with a view to expand to the full set of sub-surface stations and tunnels on the London Underground, and also the [[Elizabeth line|Elizabeth Line]], by the end of 2024.<ref>{{Cite web |last=Transport for London |date=21 December 2022 |title=Three more London Underground stations begin offering high-speed mobile coverage to customers |url=https://tfl.gov.uk/info-for/media/press-releases/2022/december/three-more-london-underground-stations-begin-offering-high-speed-mobile-coverage-to-customers |access-date=19 August 2023 |website=Transport for London |language=en-GB |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234717/https://tfl.gov.uk/info-for/media/press-releases/2022/december/three-more-london-underground-stations-begin-offering-high-speed-mobile-coverage-to-customers |url-status=live }}</ref><ref>{{Cite web |last=Jackson |first=Mark |date=21 December 2022 |title=EE and Vodafone UK Extend 4G Mobile to 6 New London Underground Stations |url=https://www.ispreview.co.uk/index.php/2022/12/ee-uk-extend-4g-mobile-to-six-new-london-underground-stations.html |access-date=19 August 2023 |website=ISPreview UK |language=en |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234718/https://www.ispreview.co.uk/index.php/2022/12/ee-uk-extend-4g-mobile-to-six-new-london-underground-stations.html |url-status=live }}</ref> Further stations on the Northern line were launched from January 2023, with additional Northern line stations also being added in June 2023. Not all stations have identical coverage solutions, with some not having 5G connectivity present.<ref name=":9">{{Cite web |title=London Underground mobile connectivity map |url=https://mastdatabase.co.uk/gb/london-underground-connectivity/ |access-date=19 August 2023 |website=mastdatabase.co.uk |language=en-GB |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234718/https://mastdatabase.co.uk/gb/london-underground-connectivity/ |url-status=live }}</ref> As of June 2023, testing has begun on sections of the Bakerloo, Piccadilly and Victoria lines.<ref name=":10">{{cite web |last=Mansfield |first=Ian |date=20 June 2023 |title=London Underground expands mobile phone coverage to Mornington Crescent station |url=https://www.ianvisits.co.uk/articles/london-underground-expands-mobile-phone-coverage-to-mornington-crescent-station-63634/ |access-date=19 August 2023 |website=ianVisits |language=en-GB |archive-date=19 August 2023 |archive-url=https://web.archive.org/web/20230819234717/https://www.ianvisits.co.uk/articles/london-underground-expands-mobile-phone-coverage-to-mornington-crescent-station-63634/ |url-status=live }}</ref><ref name=":12">{{cite web |last=Mansfield |first=Ian |date=8 September 2023 |title=London Underground expands mobile phone coverage and confirms Elizabeth line coming soon |url=https://www.ianvisits.co.uk/articles/london-underground-expands-mobile-phone-coverage-and-confirms-elizabeth-line-coming-soon-65587/ |access-date=15 December 2023 |website=ianVisits |language=en-GB |archive-date=15 December 2023 |archive-url=https://web.archive.org/web/20231215232412/https://www.ianvisits.co.uk/articles/london-underground-expands-mobile-phone-coverage-and-confirms-elizabeth-line-coming-soon-65587/ |url-status=live }}</ref>

In November and December 2023, more mobile data coverage was launched on more stations on the Northern and Central Lines. On the Northern line: all stations from Tottenham Court Road to Euston. on the Central line: from Oxford Circus to Chancery Lane.<ref>{{cite web |title=Mobile phones and Wi-Fi underground |url=https://tfl.gov.uk/campaign/station-wifi |website=Transport for London |access-date=9 January 2024 |archive-date=9 January 2024 |archive-url=https://web.archive.org/web/20240109131330/https://tfl.gov.uk/campaign/station-wifi |url-status=live }}</ref>

{| class="wikitable sortable"
|+Mobile coverage availability on London Underground<ref name=":9" /><ref name=":13">{{Cite web |date=February 2024 |title=Tube Map 4g - 5g Feb 2024 |url=https://content.tfl.gov.uk/below-ground-4g-5g-tube-map-february-2024.pdf |website=Transport for london |access-date=12 March 2024 |archive-date=12 March 2024 |archive-url=https://web.archive.org/web/20240312095020/https://content.tfl.gov.uk/below-ground-4g-5g-tube-map-february-2024.pdf |url-status=dead }}</ref>
!Line
!Sections of track or stations
!Available from
|-
|[[Jubilee line|Jubilee]]
|Westminster – Canning Town
|March 2020
|-
|[[Central line (London Underground)|Central]]
|Holland Park – Queensway
|December 2022
|-
|[[Central line (London Underground)|Central]]
|Oxford Circus – Tottenham Court Road
|September 2023
|-
|[[Northern line|Northern]]
|Archway – Kentish Town
|January 2023
|-
|[[Northern line|Northern]]
|Tottenham Court Road
|December 2023
|-
|[[Northern line|Northern]]
|Camden Town
|December 2023
|-
|[[Northern line|Northern]]
|Kentish Town – Mornington Crescent
|July 2023
|-
|[[Northern line|Northern]]
|Archway – East Finchley
|January 2024 – Highgate platforms have service, not the tunnels. Expected from Spring 2024<ref name=":12" />
|-
|[[Piccadilly line (London Underground)|Piccadilly]]
|Russell Square – Covent Garden
|Expected from Spring 2024<ref name=":12" />
|-
|[[Northern line|Northern]]
|Euston – Belsize Park
|November 2023
|-
|[[Central line (London Underground)|Central]]
|Holland Park to Bank
|February 2024
|-
|[[Northern line|Northern]]
|Golders Green – Hampstead
|Expected from Spring 2024<ref name=":13" />
|-
|[[Victoria line|Victoria]]
|Euston - Oxford Circus
|Expected from Spring 2024<ref name=":13" /> (as of April 2024 there is service on all Euston platforms)
|}