London Underground mobile connectivity

Mobile connectivity on the Tube

Mobile connectivity on the London Underground is provided by a combination of leaky feeders in tunnels and DAS units in stations. The programme is operated by Boldyn Networks (previously known as BAI Communications) as part of a 20-year concession awarded by Transport for London.

The programme entails full mobile connectivity throughout the London Underground by the end of 2024, including 5G connectivity at select stations. As of yet, the rollout is not complete, hence a map of deployments and other information is useful for those interested in tracking the rollout over time.

Using the map

Sections of the network that have mobile connectivity within stations and tunnels are highlighted in green. Sections highlighted in orange are planned to open soon.

If you'd prefer, you can hide all sections of the network that don't have connectivity, or show and hide particular lines.

You can also click or tap stations and sections of line on the map to reveal what services (2G/3G/4G/5G) are available in that area for each mobile operator.