What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

Are you having an issue with your SIM card not being detected by your Galaxy Tab A? This troubleshooting guide will help you with the steps on how to narrow down the factors. Galaxy Tab A SIM card not ...

While most people seem to manage just fine with a single SIM card in their smartphone, some -- especially travelers, who can save money by fitting a local SIM card into their handset -- love the ...

One of the first videos I ever did up for CrackBerry.com was a BlackBerry 101 on How to Install the MicroSD Card into your BlackBerry Smartphone. To this day it is still one of the most popular ...

Your device will automatically register the SIM if it has been activated through your carrier. TIP: On the BlackBerry KEY2 there is a small hole at the top of the device, note that this is not the ...

While most people manage quite well with a single SIM card, if you want better demarcation between your work and home life, or you want to make roaming with multiple SIM cards easier, then having the ...