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.
Try a software restore through itunes, if that doesn't work, somebody has to open the iPhone and replace the logic board. The cheapest way is to do it your self and you should get aways with around $70. The part is available on ebay. If you want to pay to have a service do it for you there are third party iPhone Screen Repair Services. To try to do it yourself, here's a iPhone Repair guide on how to disassemble an iPhone. As you can see from the guide, this is not quite that easy. Maybe a tech savvy friend can do it for you.
Answers & Comments
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
Try a software restore through itunes, if that doesn't work, somebody has to open the iPhone and replace the logic board. The cheapest way is to do it your self and you should get aways with around $70. The part is available on ebay. If you want to pay to have a service do it for you there are third party iPhone Screen Repair Services. To try to do it yourself, here's a iPhone Repair guide on how to disassemble an iPhone. As you can see from the guide, this is not quite that easy. Maybe a tech savvy friend can do it for you.