I have a Nokia Lumia 920 that I occasional use for maps and delivering audio in my car over bluetooth. Last Wednesday I used the map and listened to music while driving to get my daughter from collage. I have used it before, but this is the last time I remember it working. Then today, Thursday (8 days later), when I connect my phone to bluetooth in my car, I can no longer use the three front buttons, volume, power or camera. The screen still works. I have to do a soft reset to get the phone back. I did some playing, regardless whether I am in an app or not, as soon as I connect my phone to bluetooth audio it locks up. The only thing that has changed is I downloaded a few programs(Gmaps Pro, some games), put on a screen protector, and got the Nokia Extras+ updates. I am wondering if anyone else is having issue since Nokia pushed the Extra+ update. I am connecting to A Ford Sync for bluetooth..