AT&T is improving cell service in subway systems, potentially reducing dropped calls.

NYC subway riders can now enjoy 5G on the G line, leaving fewer dead zones underground.

"Each new activated segment brings us closer to a fully connected New York. By collaborating with Boldyn Networks and the MTA, we are helping provide dependable, high-speed 5G as part of the daily commute for New Yorkers. We are proud to be the first and only provider to bring this enhanced experience to the G line."

– John Emra, president, Atlantic Region, AT&T, November 2025

Underground connectivity is expanding

It has become commonplace to lose service while riding underground. Now, these dead zones are increasingly becoming live coverage areas. The G line update is a step toward making the subway similar to an above-ground environment in terms of connectivity.

Each time a new tunnel segment becomes active, it affects how people spend their time underground. For a constantly moving city, this is very important.

There is a broader objective

Boldyn's expansion aims for dependable cellular coverage across all 418 miles of New York City's subway tunnels. Significant progress has been made, such as all major carriers now having live coverage in the 42nd Street Shuttle tunnels and the Canarsie tunnel, which connects Bedford Avenue in Brooklyn and 1st Avenue in Manhattan via the L train.

Every underground subway station has Wi-Fi and cellular service. The goal is to eliminate signal gaps between stations in the tunnels.

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