In the U.S., AT&T and T-Mobile are GSM carriers. Contrast with CDMA phone. See GSM. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

When you tap Carrier, it will change to IMS Status and show messaging support details to the right. For example, if your ...

technology to enable seamless handover between GSM and Wi-Fi networks. Orange will be one of the first carriers to offer the handset, according to Nokia. UMA is a specification developed by ...