half screen messages only. how can I turn this back to normal.

[davidsr]

 half screen

[Bobthemadman]

turn off and on
if not try moving when in meesage

[davidsr]

hi done all that. and have done update. and still the same..

[davidsr]

problem only exists if I change from 320 to 720 pixels. as being 320 standard for samsung.