A free program for Android, by Z.

The International Mobile Equipment Identity, or IMEI, is a unique numeric identifier for mobile phones, as well as some satellite phones. It is a 15-digit number that is distinctive to every device. Cellphone companies and distributors share IMEI numbers in to keep track of stolen or compromised smartphones.

One of the best IMEI tool for Android is IMEI / Phone Info Tool app. With this app, you can instantly obtain the following device information with a single touch tool: