WM21 - Cell Phone Number

Hi Everyone,

I'm starting to jump into the mobile development world and have the first of what will probably be many questions: I'm working on an app for a small group for android and ios phones only - no tablets. My plan is to have the installation include the list of members and their phone numbers. Is there a way for the app to get the cell's phone number so I can match it to the installed data?

Thanks, Bill