Your first and easiest option is to call someone elses phone your number will appear on the screen!
launch the app and scroll all the way down to the About Phone section.
There, at the top, youll find your phone number.
About Phone
All hope is not lost though you still have other options to find out your number!
Number section
Open your Contacts app at the very top, youll find an entry labelled Me.
Tap it, and youll see your phone number displayed.
