You will still find 2G GSM service in some rural areas , because it’s still supported by rural carriers, but you can’t rely on the system as a nationwide network. 3G UMTS devices, otherwise known as 3G GSM or WCDMA, still work on AT&T and T-Mobile.
You will still find 2G GSM service in some rural areas , because it’s still supported by rural carriers, but you can’t rely on the system as a nationwide network. 3G UMTS devices, otherwise known as 3G GSM or WCDMA, still work on AT&T and T-Mobile.