[roblade]

Arreglado! al final lo encontre en un foro en ingles! a mi me ha funcionado selecionando el 802!

There is a solution; (not sure about it, my friend had the same problem and he fixed it with this method)

Open dialer menu and type;
5689#*980# (Sprint)
3845#*801# (T-Mobile)
3845#*803# (AT&T Canada)
3845#*802# (International)
3845#*800# (At&T)
3845#*980# (Verizon)

And when hidden menu is showed up, go to "Settings"
and go to "Update Touch Firmware".
The touchscreen won't work until after 5 seconds, Wait for it and if touchscreen gets working, exit the menu.
Lock the phone and try knocking on the screen, It should be working