In gambling, three bars are considered to be a sign you've won. Not in this case. If your phone shows a white bar across the top of the screen it's a sure sign you've got Touch Disease. Take it to a repair shop where they can fix the broken solder.
It is possible to bend the phone back into place to restore touch functionality, however this solution is only temporary and the real issue will resurface, perhaps at a more inopportune time. Think of it like running on a spare tire, you shouldn't use a bandaid for long.