However, it is essential for your cellular carrier to manage your phone. So it isn't useful as a universal identifier for all Apple products. The serial number fits Apple's universal serial number system from the serial number alone Apple knows what type of device it is (iPhone, iPad, iPod, Macbook, iMac, etc), when it was made, and it uses it to track the warranty status. It also has a WiFi MAC address, a Bluetooth MAC address, an ICCID, an MEID, an SEID and probably a couple I have missed. Your phone has a lot more than IMEI and serial number. I would like to understand why a phone has both an IMEI number and also a Serial number please? what is the purpose of having two unique numbers for a phone?
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