The IMEI is usually found printed inside the battery compartment of the handset or on the original packaging/box. The number can also be retrieved on the display screen of most GSM mobile phones by entering *#06# into the keypad. Although in most cases, it is not necessary to provide this IMEI number to us when reporting a lost or stolen mobile phone, you are strongly recommended to write down the IMEI number and keep it in a safe place in the event you want to report the loss or theft of the phone.