✅ I have successfully implemented the feature that allows users to update their profile with a mobile number using verifyPhoneNumber and update currentUser.updatePhoneNumber
❌ However, a problem arises when a new user attempts to sign in with a phone number, as it automatically creates an account.
If there is a need to associate the phone number with an email account, the previous method returns an error stating credential-already-in-use.
According to Firebase's documentation, the recommended approach is:
var credential = firebase.auth.PhoneAuthProvider.credential(confirmationResult.verificationId, code);
firebase.auth().signInWithCredential(credential);
While attempting to link accounts using linkWithCredential, the issue arises where signInWithCredential returns a result with result.credential = null
// Sign in user with the desired account
auth.signInWithCredential(credential).then(function(result) {
console.log("Sign In Success", result);
var currentUser = result.user;
return prevUser.linkWithCredential(result.credential) //this line doesn't work.
.then(function(linkResult) {
return auth.signInWithCredential(linkResult.credential);
})
}).catch(function(error) {
console.log("Sign In Error", error);
});
Since result.credential is null, proceeding with LinkWithCredential becomes impossible.
Attempts using linkWithPhoneNumber also do not prove successful, as it only provides a validation ID without merging the account.
❓I would appreciate some insights on how you have managed to merge a phoneNumber account with another account type (such as Facebook, Google, or Email).