AT&T rolls out 5G underground on NYC’s G‑train tunnels

AT&T rolls out 5G underground on NYC’s G‑train tunnels is profiled by BTW Media because published evidence links it to internet infrastructure, governance, operational dependencies, or market visibility.

• 5G now live between Court Square (Queens) and Bedford–Nostrand Avenue (Brooklyn) on the G line.
• AT&T becomes the first carrier to offer 5G in both the G line and Joralemon Street tunnel.

What happened: AT&T expands 5G coverage on G line subway tunnels

AT&T, in collaboration with neutral‑host provider Boldyn Networks, has turned on 5G cellular service in the MTA’s Crosstown G train tunnels. The coverage now runs between Court Square in Long Island City, Queens, and Bedford–Nostrand Avenue in Brooklyn.

This follows AT&T’s earlier activation in the Joralemon Street tunnel, which serves trains on the 4 and 5 lines. Boldyn says its wider project aims to bring full cellular coverage across all 418 miles of subway tunnel network.

AT&T’s Atlantic Region President, John Emra, said the collaboration with Boldyn and the MTA is helping ensure reliable, high-speed 5G is part of the everyday transit experience for subway commuters. Boldyn Networks also highlighted that this expansion is not just about infrastructure: it’s about making the subway a smarter, more connected city.

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Why it’s important

The rollout marks a significant step toward seamless underground connectivity in New York’s notoriously patchy subway system. Having 5G in subway tunnels means commuters can reliably stream, message or work while travelling, rather than switching to offline mode.

By being the first and only carrier on both the G line and Joralemon Street tunnel, AT&T gains a competitive edge, especially for customers who value constant, high-speed mobile access.

More broadly, this is part of a long-term public-private project to modernise NYC’s transport infrastructure. Boldyn’s ambition to cover every inch of the subway’s 418 tunnel miles could transform how New Yorkers use mobile services underground, making losing signal a thing of the past.