If your phone suddenly won't recognize your SIM card, don't panic. There are a few things you can do to try and resolve the problem. Here's what to do.

Usually your SIM card works exactly as intended, but there are a few reasons it might not be working.

So, if your SIM card is not working, then you need to get its KYC done again using valid documents or get a new SIM card issued.

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 ...