Most of phones now supports 4G VoLTE and or 5G. If you’re not sure whether your phone will work with a specific carrier, you may visit willmyphonework.net to find some positive answers. Once there, enter your phone’s brand and model, U.S. for country and, under “Carriers,” choose the carrier you wish to join then click Search. (This, however, does not guarantee if the device is unlocked or that the phone will work with carrier's services).