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1 iPhone 4s no display, its not the screen so what is it?
( I am experienced in repairing mobile phones)
I have a 4s in and is does not show a display, tried various screens and still no joy, so now I know it is not a problem with the screens, the connectors on the logic board are OK, so what else can be causing ni display? graphics chip? if so where is this located so I can inspect?
Thanks
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