Check and see if your phone is stuck in headphones mode.
Every time I attempt to play any sort of audio through my phone, my phone freezes and the app I am on crashes, whether it is FaceTime, the phone, YouTube, etc. But when I have my headphones or something in the headphone jack, it works. I cannot call and I cannot hear or transmit any audio without my headphones and my phone is always freezing without headphones. My phone is updated to the latest iOS and it is an IPhone 6s.
User profile for user: matc2520
Question: Why is my iPhone freezing without my headphones in?