设备无法使用Firebase身份验证电话号码

Question

I have an iPhone that I'm trying to use with firebase authentication using phone numbers.

The project works and the emulator + device (without sim card) works using that phone number of the device that doesn't work (receives sms). But when I try to "login" on the device (with sim) I keep getting nil from verifyPhoneNumber . Is there something I'm missing that has to be active on the device?

This is the code that I'm trying to call with the text field as +1**********, along with FirebaseApp.configure() in the AppDelegate

PhoneAuthProvider.provider().verifyPhoneNumber(phoneTextField.text!, uiDelegate: nil) { (veri, error) in
    if error != nil {
        print(veri)
    } else {
        print(error)
    }
}

Answer 1

There is likely an error, but it's not surfacing because the if statement is backwards. Instead, it should be

PhoneAuthProvider.provider().verifyPhoneNumber(phoneTextField.text!, uiDelegate: nil) { (veri, error) in
    if error != nil {
        print(error)
    } else {
        print(veri)
    }
}

This will then print error instead of veri . It's likely printing nil because veri has no value if there's an error.