It is easy to get confused by all the different numbers on a phone. The SIM card number is the ICCID. This is different from the IMEI and your phone number. The IMEI is another special number. It is for your phone itself, not the SIM card. Think of the IMEI as your phone's fingerprint. Every phone has its own IMEI number. This number is used to track stolen phones. The SIM card number... aolists.com