GSM

GSM is like a special language that phones use to talk to each other. You know how you use words to talk to your friends? Well, phones use GSM to talk to their friends (other phones and the cellphone tower).

Think of it like a secret code that only phones can understand. This code helps the phones send messages and make calls. This is kind of like when you have a secret code with your friends to send messages to each other.

GSM is also really important because it helps your phone know where to go to find a signal to make calls and messages. It’s like a map that helps your phone know where it is so it can get the best signal.

So, basically, GSM is like a secret language that phones use to talk to each other and find the best signal to make calls and send messages.