I keep my phone on vibrate at all times due to work, and the overall annoyance of ringers. I have been noticing that sometimes my phone will change to silent on its own. At first I though maybe I was hitting something before id lock it or something, but I was Google searching and apparently I'm not the first person with this problem. I don't have any third party apps messing with it. Anyone have any ideas why it would be doing this and an idea on a fix if possible? Or is it a glitch that's unfixable? Has this happened to anyone else? sent from my thunderbolt.