If you have a physical SIM card, insert it into your device before ... If you purchased a phone and smartwatch, set up your ...

Your phone's SIM card allows the device to make calls, send texts, and connect to the internet. The SIM card provides a phone number that identifies your device on the carrier's network, whether ...

All versions of the Samsung Galaxy S25 series in the US support eSIM. They also have a Nano SIM card slot for those who ...