I have an iPhone that is frozen while browsing with Safari (it happens all the time). I am aware that holding down the power button with the home button for 10 seconds is supposed to reset the phone. It does not. I have held down for 60 sec or longer at least 10 times, to no avail.
What other options exist to force the phone to reboot, other than waiting for the power to exhaust itself completely after several hours?