My original iPhone 6s would suddenly stop playing any sound for no reason I could see. I could be listening to music or watching a video, stop do other things, and when I tried to use it again, the sound was gone both through the speaker or headphones. Apple replaced it with another iPhone 6s which started having the same problem. So, when they gave me the third phone, the genius said maybe it was software related and restoring my phone from my itunes backup, brought the problem over to the new phone. So, this time, I did not restore from backup, just signed it to icloud to get my contacts and calendar back and I'm still having the same problem. Anybody every hear of this or know what could be wrong? Thank you.