LG G3 locked, how can I get into it?

[AC Question]

LG G3 locked

Hi we've been away for week in Wales and my wife's LG G3 has been olayingupmall week. We arrived home today and she took the phone from her bag and the screen just displays the message "Enter back up pin and Google account details,
She doesn't recall having set up a pin and it wouldn't accept Google account detail either, we changed her Google password using my phone and she can log into Google BUT not on the LG G3! We are at a dead loss can you Help please.

 

[belodion]

Welcome to AC.

Have you tried changing or deleting the security PIN or password for the G3 via Android Device Manager?

Posted via the Android Central App