Most mobile phones rely on a small card called a SIM (subscriber identity module) to make phone calls and send text messages. Without it, your phone isn't able to connect with the cellular network ...

If you've ever upgraded to a new phone or switched carriers, chances are you're already familiar with the concept of a SIM ...

Plastic SIM cards are steadily being phased out in favour of eSIMs which are supported by most major mobile network operators ...