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Terrible screeching noise

C

chainprayer

macrumors 6502a
Original poster
Feb 10, 2008
638
2
My iPhone 3GS (4.0.1) just started making this terrible screeching/feedback noise when I lock or unlock my home screen. I caught it with my wife's phone and posted it here on youtube.

Any ideas why this is happening? Very very annoying!
 
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