NPS server wont show bad phone wifi connection attempts

We are using a Windows 2008r2 server with NPS to use the RADIUS feature to authenticate our wifi users.

The issue is this-  if a user tries to login to a laptop using wifi, an entry WILL show up in the security logs of the NPS server and the account WILL get locked out. But if a user has a bad password saved in a phone's wifi settings, no log entries will show up, but the user does get locked out, but only sometimes, other times it wont.

Sorry the above is a little confusing, but basically, why wont my NPS server show the bad phone wifi login attempts in my RADIUS logs?

Thanks!