Smartphone Chip: Today we will tell you about a small chip that is found in a smartphone, which makes the phone useful. Without this chip, the phone looks like a box. Let us tell you about this chip in detail. 

SIM Card: SIM card is a small chip that is inserted in the mobile phone. It connects the smartphone to the network, so that you can make calls, send messages and use the Internet. It can be said that it is the heart of the smartphone. It makes most of the functions of the smartphone possible. But, do you know how the SIM card works? Most people do not know about this. If you also do not know about this, then do not worry. We give you complete information about it. 

How does a SIM card work?

Unique ID - Every SIM card carries a unique ID, such as your Aadhaar card number. This ID identifies your phone as a user on the network.

Connection to the network - When you switch on your phone, the SIM card connects your phone to the network tower. 

Data transfer - The SIM card transfers data between your phone and the network, such as calls, messages and internet data. 

Roaming - During roaming, the SIM card tells the phone that the user is in a roaming area.

Types of SIM cards

Prepaid SIM - In this you first recharge and then use that money for calls and data. Telecom companies offer various recharge plans to their users in different price ranges. 

Postpaid SIM - In this you first use call and internet services and then pay for them together at the end of the month. 

E-SIM -  E-SIM option has come in some new smartphones. It is not a physical SIM card, but a software-based SIM.

Advantages of SIM card

Usage - You can use the same SIM card in any number of smartphones. But, you can insert the SIM card in only one phone at a time. 

Portability - You can port your number from one network to another.