“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

You should provide a proper code example of what you are trying to do. — Fabien
I have answered here : stackoverflow.com/questions/44091666/… — Arpit Jain
Possible duplicate of Firebase Auth using phone number returns an internal error — Ajay S
'Also, note that phone number sign-in requires a physical device and won't work on a simulator.' If that's not the issue, did you enable phone number authentication in your console? — Jay

algrid algrid · Accepted Answer · 2017-10-02T17:38:42

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.

“Invalid Token” when trying to authenticate phone number using firebase

7 Answers