Error characteristic: There is an internal error has occurred when logging in with phone number. 

It's because we use Google Fire base for SMS generation and it doesn't work without play service. It happens when log-in/log-out is made several times from the same device.

Solutions:  1). Update Google Play Services to latest on your phone and try again                                please.
​                2). Contact Better HR CS tram for password and email to log in.