I have two-month old new, unlocked iphone 4S from Apple. For some reason the lower part of the screen is unresponsive. Thus I cannot use the numeric key or any others at the bottom of screen. Any suggestions welcome. Thanks. Anthony
...and if the above suggestions don't work, just RUN to the nearest Apple Store (or the place of purchase) and get a replacement. Use that warranty!! And remember that Apple has a free 90-day telephone tech support service -- I've been told. Anyone???