On August 3, 2026, T-Mobile officially decommissioned its 2G GSM network, marking the end of 2G services among the major U.S. carriers. This move follows AT&T’s discontinuation of 2G in 2017 and Verizon’s in 2020.
The 2G network, once a cornerstone of mobile communication, has been maintained by T-Mobile to support legacy customers and international visitors relying on 2G for voice calls. In preparation for this shutdown, T-Mobile collaborated with global carriers to ensure a smooth transition for affected users.
Customers utilizing devices dependent on 2G, including older smartphones, alarm systems, and various IoT devices, were notified well in advance to facilitate migration to newer technologies. With the cessation of 2G services, these devices will no longer function on T-Mobile’s network.
Notably, the original iPhone, which relied solely on 2G connectivity, has now lost its last avenue for cellular service. While AT&T’s 2017 2G shutdown initially rendered the device obsolete on its network, T-Mobile’s recent action eliminates any remaining cellular connectivity options for this pioneering smartphone.
This development underscores the rapid evolution of mobile networks, as carriers phase out outdated technologies to reallocate resources toward more advanced 4G and 5G infrastructures. Users of legacy devices are encouraged to upgrade to ensure continued access to mobile services.
