For U.S. cell phone customers, AT&T and T–Mobile are GSM carriers, while Verizon, Sprint, and US Cellular are CDMA, taking into account updates in carrier policies and plans to close off networks.

The iPhone 4S is the first device produced by Apple that is a dual-mode phone. This means the iPhone can theoretically be used on any CDMA or GSM network, in any country. In the United States CDMA ...

While the best unlocked phones almost certainly support GSM carriers like AT&T and T-Mobile, it’s best to look for devices that work with all the major U.S. providers, including Verizon.

Model A1633 and A1634 (iPhone 6s and 6s Plus), which it lists for AT&T and 31 other U.S. carriers—other all other GSM carriers except T-Mobile. Model A1688 and A1687 (ditto) for T-Mobile, Sprint ...

Carriers around the world are converging on 2017 as the year to turn off their GSM networks, with three operators in Singapore announcing Monday their plans to reuse their GSM spectrum for other ...

The Nexus 4 is a pentaband GSM phone, so you can use it on any GSM network. Two such networks exist in the US, but you have more than two options. Let’s go over what you need to know.

Network Carriers Best cell phone plans in 2025: The best options for your monthly phone service. ... as long as it's a GSM phone. Consumer Cellular doesn't charge you for a SIM card.