SIM ejector tools are quickly becoming obsolete as phones switch to eSIM. Before you toss yours, there's a surprisingly handy ...

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 ...

The sim card that exists inside your phone is what connects your phone to your specific cellular network. For most of us we might not even realize it’s there. When we get a new phone from our carrier, ...

Cellular providers offer all kinds of security and data encryption to their customers, but there's one task users should ...

I'm not buying the eSIM hype — physical SIM cards are more reliable and make you less dependent on your cellular carrier.

[Nils Pipenbrinck] has been working on a very interesting problem. The SIM card in your cellphone talks to the contactless near-field communication (NFC) chip through a cool protocol that we’d never ...

The SIM Toolkit app is the real connecting mechanism of your phone with cellular towers, and is a lifesaver in situations like international roaming.

After you purchase and use your cellphone for an extended period of time, you can change networks. However, the phone that you're currently using may not be offered on that network. If you wish to ...