For many iPhones and Android devices, the easiest way to find your IMEI number is to just dial the following: *#06#
The 15-digit IMEI number should appear on your screen.
Find Your IMEI in Your Phone’s Settings
For Android Find Your IMEI in Your Android’s Settings
Go to Settings > About phone > Status and look for the IMEI number. Or you may need to tap IMEI information to get the numbers.
On some Androids, it will be under Settings > General > About device > Status.
For iPhone Go to Settings > General > About then scroll down until you see the IMEI.