I have an iPhone 4s with which the power button does not work. My phone froze on the home page about 4 hours ago, and I can't restart it since the power button is broken and I can't use assistive touch since the screen is frozen. Is there any way to restart (not reset) the phone? I've looked online and the only solution I could find is to wait for it to die in which it automatically restarts, but so far it hasn't (it was at 100% when it froze). Should I wait longer or is there something else I can do? Thanks.