Your phone's SIM card allows the device to make calls, send texts, and connect to the internet. The SIM card provides a phone ...

The new Samsung Galaxy Note 5 requires a nano SIM card for you to place calls, access the Internet, download applications, and share photos over your network service ...

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish ...

Losing your phone or SIM card can be stressful, especially if it contains important contacts, messages, and personal ...

You can check to see if your iPhone is unlocked from a carrier using any of a few different methods.