Woke up in the middle of the night. Pressed phone for time. Black screen. No power. It was on charge. The home button was boiling hot! Would not switch on. Google the problem and found that holding power button and home button down will reset. This worked. Now worried that this will happen again. It is my only alarm and have to wake up for work! Very disappointed to find this happening to a new phone. Got my 6s on launch day and has worked fine until now! What to do? How does one trust it won't happen again??