I've been having a strange problem with my less than year old iPhone 6. This has never happened before today and today for some reason it began happening and continues to happen once every few hours. My phone will become unresponsive and will not wake from sleep and I'll have to just wait until it decides to wake from sleep, which can take up to 10 minutes. During this process, the top front of the phone gets extremely hot to the touch (the glass near the speaker and front facing camera), but the phone works perfectly other than that and I don't know what's wrong with it or why it's suddenly doing this.