How to Find your Phone Number on Android Device
Step 1. First go to settings on your Android device.
Step 2. Now scroll down and select “About phone” or “About device“. ” If you are running older Step 3. version of Android you’ll see your number in this section.”
Now if you are running Android 5.0+, then in About device tap on status>SIM card Status>My phone number.
Step 4. If you are seeing Unknown in My phone number that means, either you have ported your number or your SIM was not inserted properly.