How to Find the iPhone IMEI Number by ABOUT MENU:

Step One
Tap to open Settings from your Springboard.

Step Two
Press to select General from the Settings menu.

Step Three
Choose About from the General menu.

Step Four
Scroll down to find your IMEI number displayed.

How to Find the iPhone IMEI Number by DIAL:

Step One
Tap to open Phone from your Springboard.

Step Two
Press to select Keypad from the tabs at the bottom of the screen then input *#06#.

Step Three
Your IMEI number will be displayed on the screen.

How to Find the iPhone IMEI Number by BACK ENGRAVING:
Your IMEI is engraved on the back case of the original iPhone and the iPhone 5, near the bottom. The MEID number uses the first 14 digits, disregarding the last digit.
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How to Find the iPhone IMEI Number by SIM CARD TRAY:

The serial number and IMEI will be printed on the SIM tray of the iPhone 3G, iPhone 3GS, iPhone 4 (GSM model), and iPhone 4S, as shown below.

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.

How to Find the iPhone IMEI Number by iTunes :

Connect your iPhone 5, 4S, 4, 3GS and 3G to iTunes, and wait until your Computer and iTunes Detect your iPhone, then on iTunes press on iPhone button to show your iPhone Details ( Capacity, Name, ICCID, Serial, IMEI, Phone Number).
If you couldn’t see your imei number you can left Click with your mouse several time until to see IMEI Number as Shown below in the image.

How to Find the iPhone IMEI Number by [ iPhone box ] :

IMEI Number always written on the iPhone box like below.





Source: myimeiunlock