Hey, this is a lumia 720 owner. I actually am having a problem with my device. If i set volume to 30/30. and keep it unused for some time with screen off, Then after some time it will drop to some lower level ( automatically ). it will get to 3/30, & then i'll have to again increase it. this all happens in ring+vibrate mode, i have not tried any other mode. can some one help me out with this. i have installed updates too. :/ still don't know what is happening.