My LG G6 changed the ringtone on its own.

[AC Question]

My phone was ringing and I didn't realize it because it was a different ringtone than the one I set. Ringtone ID is off. The ringtone that it changed to is not even in the list of ringtones that comes on the phone.

 

[B. Diddy]

Welcome to Android Central! Do you have any other apps installed that can make phone calls (like Facebook Messenger, Hangouts Dialer, etc.)?