We at GizBot have come up with several tricky ways to use create a WhatsApp without a valid SIM on your Android phone, or how to spy on someone just by chatting on WhatsApp. Here's another trick that ...

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 ...

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 ...

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 ...