Wireless

T-Mobile and AT&T Go Back and Forth in Court Over Customers

T-Mobile says switching tool not illegal, as AT&T alleges. They’re also fighting about an advertising dispute

Dec 10, 2025 — 5 min read

WASHINGTON, Dec. 10, 2025 – T-Mobile is trying to take customers from its rivals, and has built a tool to make it as easy as possible to switch.

Now, AT&T is asking federal judges to block T-Mobile’s switching tool from accessing AT&T customer account data. T-Mobile wants the request denied.

The request should be denied, T-Mobile says, because it’s no longer doing what AT&T originally complained about.

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Wireless AT&T T-Mobile Srini Gopalan John Stankey Verizon NAD FTC

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