CDMA version of the fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. 16 or 32 GB / Model A1349 / CDMA compatibility.

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After on/off/proximity replacement, only backlight works on display?

I replaced the on/off/proximity sensor ribbon in order to fix an issue with the on/off button not working. After cleaning all the contacts as suggested by others and putting everything back together the display is not working. It worked before I took it apart. You can see that the backlight on the screen is lit but can not see or control anything else. I've tried the hard reset with the same results. Any Suggestions?

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did you take the screen off to get the 2 screw of the power button out? if you did not, you probably bent the ribbon cable to much and broke it..

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No, I looked at several different resources for directions on how to replace the on/off button and none of them mentioned removing the screen or using caution not to bend the ribbon to much. If that is the case I will need to replace the the entire display correct? Could this problem be caused by the proximity sensor?

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Deck the Halls
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yes you are correct, none of them mentioned removing the screen or using caution not to bend the ribbon to much.

if you are really careful you dont have to take of the screen, but i always remove screen before taking the 2 upper screws out.

and yes now you will have to replace the entire display

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