This is a discussion on iPhone 4 suddenly dead, why did it happen? within the iPhone Help forums, part of the iPhone Forum category; Yesterday I locked my iPhone and it wouldn't wake up, I found here somwehere that if I hold home + lock button it would reset, ...
Yesterday I locked my iPhone and it wouldn't wake up, I found here somwehere that if I hold home + lock button it would reset, and it worked.
It's working fine all day now, but I'm worried if it happens again.
But my question is, why did it happen?
Is it software (iOS crash) or hardware issue?
Your phone is basically a computer. Sometimes it crashes/freezes. It happens to us all. If it happens all the time then I would take it up with apple. If it only happens once in a blue moon then it's nothing to worry about...