Seeing “No SIM” or “Invalid SIM” on iPhone? Check your SIM card, restart, or update your carrier settings. Simple fixes often ...

TAIPEI, TAIWAN - 2020/11/14: Apple iPhone 12 mini seen on display at an Apple store after the launch of the new iPhone 12 series smartphones. (Photo by Walid Berrazeg/SOPA Images/LightRocket via Getty ...

With smartphones advancing in features at a tremendous pace every year, manufacturers are in the pursuit to make components smaller and more efficient. One such change is in the SIM card technology ...

The newer eSIM technology, which is quickly becoming the standard on high-end phones, is safer and more convenient.

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 ...

A SIM (Subscriber Identity Module) is a tiny bit of circuitry that uniquely identifies your cellular modem in a phone, tablet, or other device to nearby cellular networks to allow access for voice, ...