AT&T and Boldyn Networks Expand Cellular Coverage to Key MTA Tunnel Segments
Event summary
- AT&T and Boldyn Networks have extended cellular service to additional segments of the MTA's 4/5 and G lines, effective March 25, 2026.
- Coverage now spans the 4/5 lines between Borough Hall and Fulton Street stations and the G line between Court Square and Hoyt-Schermerhorn Streets stations.
- This expansion follows prior activations in the Joralemon Street tunnel and segments of the Crosstown G line.
- Boldyn Networks is coordinating with the MTA to expand its DAS cellular network to additional underground areas, including the 4/5/6 line segments north of 59th Street.
The big picture
This expansion is part of a broader trend of enhancing connectivity in urban transit systems, addressing the growing demand for reliable underground cellular service. Boldyn Networks, as a neutral host provider, is positioning itself as a key player in delivering advanced shared network infrastructure for complex environments. The collaboration with AT&T underscores the strategic importance of 5G connectivity in improving the passenger experience in one of the nation's largest transit systems.
What we're watching
- Execution Pace
- The pace at which Boldyn Networks and AT&T can expand coverage to additional MTA tunnel segments will determine the timeline for full underground connectivity.
- Market Differentiation
- Whether AT&T can leverage this early-mover advantage to attract and retain transit-dependent users in New York City.
- Regulatory Coordination
- How effectively Boldyn Networks and the MTA can coordinate to minimize disruptions and accelerate project timelines.
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