When your phone shows a SIM card not inserted error, it’s either telling you that the SIM card doesn’t have secure contact with the slot or something in the phone system is preventing the SIM card ...

So you're in a pinch, and you need to swap out the SIM card or install a microSD in your Android device, but you can't find the nifty little ejector tool that came in the device's retail box. Fret not ...

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...