Mobile operators have been collaborating with Transport for London (TfL) on the project for some time. The pilot project will see the Eastern section of the Jubilee receiving a 4G makeover.
Mobile coverage will be initially available on platforms and in tunnels between Canning Town and Westminster (which includes Canary Wharf) before being expanded to the rest of the Jubilee line by the end of the year.
Passengers will be able to make phone calls, check for the latest travel information, and browse the internet uninterrupted during their journeys on this section of the Jubilee line.
Ticket halls and corridors within stations are also covered by the pilot, except London Bridge and Waterloo stations where the signal will only be available on the Jubilee line platforms.
London Underground already has WiFi across all its stations, although passengers can only connect on the platforms.
Last week it emerged that around 4.4 million homes across the UK are ...