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원문 게시자: eman05 ,

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I would check for water damage, take out the sim card, with the iPhone screen facing down take a look at the water indicator it should be white if it is red then unit has been wet.  These could cause some of the problems you are having, if someone replaced the screen and fail to reinstall all the parts surrounding the camera proximity that could cause the problem.  To replace the power, volume flex on an iPhone 5 is not easy, for a season pro like myself it take me about an hour.  Also you should check the antenna to make sure it is seated correctly.

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