Touch screen wont work

Try a reset. Hold down the power key at the same time as the round home key until
phone powers down. Release buttons only when you see the apple logo,
then wait a min or two for phone to re-boot. You will not lose any data on the phone.

If this does not work, try an actual system reset. Sync iPhone to computer to back
up essential data ie contacts apps etc, then go to settings general and reset. Reset
all settings as a last resort. This will give you a fresh start and should sort out
the majority of any bugs the phone has. A resync with you computer will restore apps etc.

Hope this helps and if so please vote.

Thanks

Jim