We previously reported on an issue where the iPhone's unlock slider gets stuck. That is, when attempting to unlock the iPhone -- as is necessary when waking the device manually, or when receiving a phone call -- the slider does not respond to touch, refusing to move across and properly perform an unlock. Our previously posted solutions include resetting, restoring and closing applications before locking.
It now appears that the fix, in some cases, is to simply press the Home button once before attempting to move the slider. Though the iPhone is ostensibly awake when the screen activates and the slider appears, it may not be fully responsive (again, in some cases) until the home button is pressed.
iPhone Atlas reader Conor McCaffrey writes:
"Whenever the slider is stuck if you look at the top of the screen you will notice that the info bar (time, signal strength) isn't there. Press the home button on the iPhone and it will appear and then you can slide it. The phone seems to be half asleep."