What is IMEI?
The IMEI (International Mobile Equipment Identity) is a unique number to identify mobile phones. Dual sim phones will have two IMEI numbers (see below)
The IMEI is only used for identifying the device and has no permanent or semi-permanent relation to the subscriber. The number is used by the GSM network to identify valid devices and therefore can be used to stop a stolen phone from accessing the network in that country.
3 ways to check your IMEI
1 - Dial *#06# on the device
The IMEI can be displayed on the screen of the phone by entering *#06# into the keypad on most phones. It can also be printed inside the battery compartment of the phone.
2 - Find your IMEI number on the box of your phone:
3 - Find your IMEI number in the phone settings
Go to phone settings
Then select the "General"
In the "About" field you will find your iPhone IMEI
In some iPhones you can check the IMEI number on the SIM card tray.
In some iPhone models IMEI number is engraved on the back cover.
Your IMEI number is important to identify your device and get it blacklisted in case it is stolen - this is necessary whenever claiming for cell phones.