Using Phone number to authenticate login instead of UUID in android

Question

I am trying to use the phone number to authenticate the sign into my app instead of UUID. I haven't found any particular links to look up. Any help is appreciated. Thanks!

Ask user to provide thier phone number. Any other way would be illegal. — Krrishnaaaa, Apr 18 '14 at 18:39
Krrishnaaa - I think That is the only way out. Paul - I want the user to have his details even after he changes his phone like whatsapp. — is3av, Apr 20 '14 at 16:38

score 0 · Answer 1 · answered Apr 18 '14 at 18:39

There is no reliable way for an Android app to find out the phone number of the device it is running on.

First, not all Android devices are phones.

Second, not all devices have SIM cards that have their correct phone number. Methods like getLine1Number() rely on that information.

Here is Google's recommendations on identifying app installations.

Using Phone number to authenticate login instead of UUID in android

1 Answers1