A. 15
B. 17
C. 12
D. 13
The International Mobile Equipment Identity (IMEI) number is a unique identification or serial number that all mobile phones and smartphones have. It is normally 15 digits long. The IMEI number can be found on the silver sticker on the back of your phone, under the battery pack, or on the box your phone came in. (To Check Your Phone IMEI Number Type *#06# )