"Invalid Token" when trying to authenticate phone number using firebase

Question

This is my code:

import FirebaseAuth   class AuthPhoneNum {      static func getPhoneNum(phoneNumber: String) {         PhoneAuthProvider.provider().verifyPhoneNumber(phoneNumber) { (verificationID, error) in             if let error = error {                 print(error)                 return             }             UserDefaults.standard.set(verificationID, forKey: "authVerificationID")         }     }      static func verify(verificationCode: String?) {         guard let verificationID = UserDefaults.standard.string(forKey: "authVerificationID") else { return }         if verificationCode != nil {             let credential = PhoneAuthProvider.provider().credential(                 withVerificationID: verificationID,                 verificationCode: verificationCode!)              Auth.auth().signIn(with: credential) { (user, error) in                 if let error = error {                     print(error)                     return                 }             }         } else {             print("No verification code")         }     }  } 

This is what the console prints out:

Error Domain=FIRAuthErrorDomain Code=17048 "Invalid token." UserInfo={NSLocalizedDescription=Invalid token., error_name=INVALID_APP_CREDENTIAL}

What am I doing wrong? Thanks

Answer 1

I was also experiencing this problem. Checked the following:

• Correct bundle Id
• Correct Google-Info.plist
• Correct aps-environment value
• Correct APNS token type when calling auth.setAPNStoken (.unknown for auto detect)

Nothing helped until in Firebase app settings I uploaded the APNS authentication key (p8) instead of certificates - I used those certificates before for push notifications only and everything was working fine but for phone number notifications something went wrong.