Aporte original por: Petr Špergl ,
Hi guys, just want to add my experience. I have replaced screen for one that is most likely not original one. During replacement I found out that proximity "fell off" the flex cable so I ordered new front camera flex. After replacement it has faulty front camera - so get another as replacement and installed. Since than Auto Brightnes is completelly missing in settings (or at least I thought so it is related to this, but maybe it is just related to IOS 11? as per thread attached bellow). It has moved in the settings since IOS 11, as per https://discussions.apple.com/thread/7963850?start=0&tstart=0 and https://discussions.apple.com/thread/8075581?start=0&tstart=0 but I have it missing even on new location as it is mentioned in that thread ... There are quite many users that are reporting similar issue ... Well I got another replacement, and situation is still same ... I have tried connect old broken screen together with new camera, but autobrightness still missing ... Tried to put iPhone to DFU, still same ... So it is IOS 11 or somehow faulty motherboard, as it seems not related to camera or screen ... To addition, with last camera change touch ID stopped working so it is really frustrating ...