Does T-Mobile still support GSM?

*The T-Mobile network uses GSM network standards , and it’s not a CDMA network.

While AT&T and T-Mobile sell GSM phones . Verizon uses CDMA technology in its networks, but usually sells phones that are equipped with both technologies.

AT&T and T-Mobile use GSM networks for all their cell phone service, and Tracfone cell phones that use GSM run off of one of those two major carriers (mostly AT&T) . CDMA stands for Code Division Multiple Access and is less popular world wide, but more popular in America.