Question

what is the full form of SIM ????​

Answer 1

Answer:

A SIM card also known as subscriber identity module or subscriber identification module (SIM), is an integrated circuit running a card operating system (COS) that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate ...

Answer 2

${\large{\mathbb{\pink{SIM- {\mathcal{\green{Subscriber \: Identification \: Module}}}}}}}$

The SIM card contains an identifier, the International Mobile Subscriber Identifier (IMSI) that identifies your handset (your phone) to the network. SIM cards contain a computer chip that can do some simple mathematics and store some information (what we call data). The SIM also stores SMS messages.