If formatting your phone doesnt help there are three possible problems in order of priority (1) your screen is gone and needs replaced (2) your ribbon cable is gone and needs replaced (3) phone needs flashed, I have repaired the first two above on many samsungs with this fault! Not an easy job! Hope this helps.
Formate with code *2767#2878#
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I even Can't see any thing on the screen.....
my samsung gtc6712 is not working .. just showing a white blank screen on starting up?? no other button is working ..
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