Our mobile number has become our identity everywhere ... So, let's learn today how to find out if someone is using a fake SIM ...

The IMEI (International Mobile Equipment Identity) number is a 15-digit unique identifier for all cell phones. It is used to identify the phone and the manufacturer and whether it is original or ...

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

If you've just got your hands on a shiny new Sim card, congratulations. Switching your Sim (the chip that dictates your allowance) can unlock huge savings. Now comes the crucial step of activating it ...

A SIM card, or subscriber identity module card, is essential component of any phone. It connects your device to a cellular network and stores vital information, including your phone number. Many ...

Richard Bowen once testified on Capitol Hill about how he warned of a coming financial crisis. Now he sounds the alarm about a scary crime -- SIM card theft. Attention all crooks: If you’re going to ...

Sareena was a senior editor for CNET covering the mobile beat, including device reviews. She is a seasoned multimedia journalist with more than a decade's worth of experience producing stories for ...