EMnify Blog What is an IMEI number? | emnify Blog

A serial number that the manufacturer assigns to cellular devices. Just as people have their own ID number and every car has a vehicle number, every cellular device with a SIM card can be precisely identified by a so-called IMEI number - International Mobile Equipment Identity. The 15-digit number is guaranteed to be globally unique, meaning dual SIM devices have two IMEI numbers due to their two SIM card slots. To learn more about other cellular connectivity and SIM card identifiers, check out our previous blog on this topic which explains what the ICCID and IMSI numbers are.