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 ...

If you need to trim your SIM card to fit your new iPhone or you simply need to know how to replace the SIM card in that iPhone, here’s a guide.

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

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

One of the benefits of having an unlocked iPhone is that you can switch out your SIM card when you travel. International phone plans are expensive, and it’s often much cheaper to buy a new card and a ...

All iPhones and iPads with cellular have a slot on their sides that houses the Subscriber Identity Module (SIM) card provided by your mobile carrier. The SIM card enables your device to access the ...

SK Telecom (SKT) announced April 22 that “customer USIM data was leaked due to malware,” but the company did not disclose what and which sensitive information was leaked, or to whom the information ...

Changing carriers can be exciting. You might get to pick up a new phone, or maybe you want better coverage in your home area. Either way, you have to know how to get set up. Each carrier tackles SIM ...

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) ...