Scratched screen

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http://forum.xda-developers.com – Ok guys my x10 mini pro u20I got a scratched screen (not like key scratches,just those everyday scratches but they're too much causing it to be blurry and not in its quality) what should I buy screen and digitizer or just screen or what I don't really know the differance please someone help me and tell me the best type or brand to get and thanks in advance. Sent from my U20i using xda app-developers app (HowTos)