US Mobile SIM

US Mobile is a GSM carrier . In general, an unlocked GSM phone from AT&T and T-Mobile will work on each other’s networks. If you have a locked device, your carrier can unlock it if you meet their individual criteria. Older phones from Verizon and Sprint, on the CDMA network, don’t operate with a SIM card.

Coverage: US Mobile uses Verizon’s cellular towers , giving you access to a huge 4G LTE network and emerging 5G network. Just don’t expect your speeds to compare with actual Verizon customers.

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.