We use so many things in our daily life, but never pay attention to their design. From the USB port to the buttons of your shirt, there is a special reason behind the design of everything. One such ...

Why SIM card has cut on corner: The cut corner on a SIM card is known as a “key.” Its main purpose is to ensure that the card is inserted into a phone in the correct direction.

I bought a SIM-to-microSIM cutter and I tried it on a deactivated SIM card. It was easy enough to do, but it also takes out a small portion of the top of the metallic portion. I put the card in my ...