So I have a custom rom but this issue has started happening just today. The phone keeps turning the sound off randomly but very often.
At first I thought it was the Car Dock causing this as it happened after I hooked it up first but I don't think it was as I unhooked it and locked it and minutes later I see I missed calls and texts as the sound got turned off. and this has been happening since.
if anyone has had this same problem and has fixed it please let me know.
The rom I am using is "SimpleRom"