A very close friend of mine just upgraded to a BlackBerry Torch. As a newbie, she was so excited that she almost forgot about her address book. How was she going to transfer her contacts from her ...

If you can't make a call or if you see an error message that your phone's SIM card is not working, there are several ways to ...

To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.

The Subscriber Identity Module, or SIM, used with GSM iPhones does not affect network reception; however, if you're unable to connect to the network to send or ...

If you’ve ever had the nightmarish experience of trying to retrieve all your peeps’ phone numbers after you lost your phone, you may want Think Geek’s SIM card backup gadget. The device has 16KB ...

If you use a Wi-Fi + Cellular version of the iPad, your tablet may come with a SIM card slot tucked into the side. In the United States, the only major carriers that use SIM cards are GSM-type ...

One of the first things you should do when you get your Samsung Galaxy Note 8 is to put in a SIM card in the phone. If you are wondering how that’s done we will tell you how to insert a SIM card into ...

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 ...