The IMEI number, or International Mobile Equipment Identity, is a 15-digit number that uniquely identifies a mobile device. 🦄
Basically, this number is the identity card or fingerprint for your phone. Through this number, the phone carrier authorizes a device to connect to its network.
With IMEI numbers, phone carriers and manufacturers are able to track smartphones that may be stolen or compromised. 🔍
The easiest way to find it is on your Back Market invoice, which you may have in your purchase confirmation email, or as the hardcopy sent to you with your device. It is also available online by signing in to your Back Market account. Otherwise, check out this guide for other ways to find your IMEI number.