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 ...

Your SIM card is one of the most important aspects of your iPhone – it’s the only way to connect to your carrier's network. And while physical SIM cards remain a viable option for many people with ...

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) ...

Activating an eSIM on your iPhone is a straightforward process that enhances your ability to manage cellular services without relying on a physical SIM card. Whether you’re transferring an existing ...

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, ...

You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...