T-Mobile shuts down 2G GSM network on August 3, 2026, closing a major security gap

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Credit: Joe Maring / Android Authority

TL;DR

T-Mobile will officially shut down its legacy 2G GSM network on August 3, 2026, marking the end of the 2G era for major US carriers.

The ancient 2G standard lacks modern encryption, leaving legacy devices highly vulnerable to spoofing and call interception via rogue cell towers.

Consumer impact will be minimal, as T-Mobile kept the network alive longer than AT&T and Verizon primarily to give international roamers and legacy IoT devices time to transition.

T-Mobile is getting plenty of heat from customers for force-migrating them off its legacy plans . The carrier is about to upset some more legacy users as it will soon turn off its 2G network, but this is actually a great move in the long run.

A recent addition to T-Mobile’s Network Evolution support page (as spotted by Fierce Network ) states that T-Mobile’s 2G GSM network will officially shut down on August 3, 2026.