Hello guys. I have a problem with my htc one s. The phone would all of a sudden lose its sound function. The phone would vibrate but not ring with incoming calls. Cannot play any music or youtube videos either. I double checked and all sounds are on and volume at its highest.For the first few times, I could fix this issue by restarting her phone. But this last time, restarting doesn't work anymore and I had no choice but to do a factory reset before the sound function comes back. It's fixed for now, but I see this only as a short term solution since the problem has been repeating itself for a few times now. Anyone with a similar issue? Anyone with suggestion as to why this would happen?