title: Firebase How to Get Phone Number Without Verification at Signing-up Stage
body: <p>I know that firebase has phone authentication at signing in-up stage. (I need this on android only) But it sends a verification code everytime. Now my application is requires e-mail only when signing in and signing up. What I need is when signing up, user puts his/her phone one time and never deals with verification etc.</p>
  
  <p>Is there any way to do it? Thank you !</p>