Why does the pentalobe screws keep falling out from the bottom of my iphone?

Because I keep tightening tighter but they unscrew themselves. For no reason.

Most likely cause is because the threads have been stripped by over-tightening. Cure might be to find some slightly larger screws.

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  • What is the difference between a Pentalobe screwdriver and a Phillips screwdriver? I'm asking this question with particular regards to replacing the front and back panels of an iPhone 4 or 4s. I understand that the Pentalobe screwdriver has been implemented by Apple with its products but I'm not sure whether a Phillips screwdriver is also needed. Particularly in regards to replacing a front LCD plate.
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