IMEI is a 15 digits long serial number unique to every GSM phone. IMEI stands for International Mobile Equipment Identity. On some iphones, you can type *#06# into your keypad and your phone will display it's IMEI number.
If this does not work you can find it on the about screen, on iOS 7:
- Tap the Settings icon
- Tap General
- Tap About - you will find your IMEI about 14 lines down just under your serial number.
For specific Apple devices:
- Your IMEI is engraved on the back case, near the bottom. The MEID number uses the first 14 digits, disregarding the last digit.
iPad and iPod touch
- Your iPad and iPod touch serial numbers are engraved on the back case toward the bottom, as shown on an iPad below. The MEID and IMEI number (when applicable) are also engraved on the back of the iPad (Wi-Fi + 3G), the iPad 2 (Wi-Fi + 3G), and the iPad (Wi-Fi + Cellular).
iPhone 3G, iPhone 3GS, iPhone 4 (GSM model), and iPhone 4S
- Remove the SIM tray. The serial number and IMEI will be printed on the SIM tray.
- When an iPhone 4S is activated on a CDMA carrier, the SIM tray displays both the MEID and the IMEI number as 15 digits. The MEID number uses the first 14 digits, disregarding the last digit, and the IMEI number uses all 15 digits.