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 ...

The SIM card is a crucial component of your iPhone, connecting you to your carrier's mobile network. It stores vital information such as your phone number, billing details, and cellular provider. When ...

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead. I started my career with CNET all the way back in 2005, when the (original) ...