title: Firebase didn't send OTP to mobile -- Android Studio firebase phone authentication error
body: <p>I add SHA1 &amp; SHA-256 to firebase console &amp; following dependencies in build.gradle file.</p>
  <p>Actually the problem is that my mobile didn't open Browser to CAPTCHA</p>
  <p>Dependecies</p>
  <pre><code> implementation 'com.google.firebase:firebase-auth:20.0.3'
   implementation &quot;androidx.browser:browser:1.3.0&quot; 
  </code></pre>
  <p>ERROR</p>
  <pre><code>E/FirebaseAuth: [GetAuthDomainTask] Error getting project config. Failed with INVALID_CERT_HASH 400
  
  E/zzf: Failed to get reCAPTCHA token with error [There was an error while trying to get your package certificate hash.]- calling backend without app verification
  </code></pre>