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 ...

A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text messages, and more.

When he's not testing the latest phones or phone cameras, Andrew can normally be found with his own camera in hand or behind his drums or eating his stash of home-cooked food -- sometimes all at once.