The Jubilee will be the first line across the London Underground network to receive 4G phone coverage.
An eastern section of the line — Westminster to Canning Town — will be the first to have 4G rolled out, from March 2020.
Unfortunately, Waterloo and London Bridge stations will have to wait along with the rest of the Underground network until late 2020 to get complete 4G reception.
TfL already provides WiFi to commuters across 260 tube stations, but the network lags behind in terms of providing full mobile coverage to its passengers; many foreign cities such as Moscow, Berlin, Tokyo, Paris already benefit from phone signal underground.
The narrow tunnels and the cost of the projects have made it challenging for TfL to bring 4G to the Underground.
Shashi Verma, Chief Technology Officer at TfL said
The London Underground network is an incredibly challenging environment in which to deliver technological improvements, but we are now well on the path to delivering mobile connectivity within our stations and tunnels.
This move follow Mayor Sadiq Khan's pledge to improve digital connectivity across London.