Face ID has issues in the dark

Discussion in 'iPhone' started by cheekyjeremy, Nov 3, 2017.

  1. cheekyjeremy macrumors 6502

    Joined:
    Aug 20, 2009
    #1
    any less than 50% brightness and neither my wife of myself can get Face ID to work in the dark. This is on two different phones. The downside is that when scrolling in bed, the brightness needs to be more or less all the way up to unlock. Not conducive to a relaxing experience. Seems to be slightly less of an issue when standing than laying down, but only slightly.

    Otherwise, love the phone
     
  2. ducxhoang macrumors member

    ducxhoang

    Joined:
    Nov 2, 2017
    #2
    That's odd. It's supposed to work in the dark. Even in pitch black...
     
  3. Lobwedgephil macrumors 601

    Lobwedgephil

    Joined:
    Apr 7, 2012
    #3
    What does screen brightness have to do with Face ID? Mine works better in the dark, hasn't failed once yet.
     
  4. ducxhoang macrumors member

    ducxhoang

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    Nov 2, 2017
    #4
    He means that the brightness on the phone makes it so that light is shining on his face.
     
  5. ninethirty macrumors 6502a

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    Mar 1, 2006
    #5
    Mine hasn't failed either. Works at lowest brightness in pitch black. I'm actually amazed.
     
  6. cheekyjeremy thread starter macrumors 6502

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    Aug 20, 2009
    #6
    I was assuming that seeing as Face ID worked at full screen brightness and stopped working at about 70% brightness, that maybe it’s being helped by the fact that the screen is illuminating our faces when we look at it. Whatever the case, this is the scenario we have at the moment.
     
  7. torana355 macrumors 68040

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    Dec 8, 2009
    Location:
    Sydney, Australia
    #7
    Face ID works via infrared, if anything it should work better in the dark.
     
  8. Packers1958 macrumors 65816

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    Apr 16, 2017
    Location:
    South Dakota
    #8
    that happened to me. I decided to try redoing my FaceID with all the lights off. Now it works perfectly in a bright or dark room.
     
  9. cheekyjeremy thread starter macrumors 6502

    Joined:
    Aug 20, 2009
    #9
    Definitely doesn’t work (for us) at the lower brightness levels. I’ll rescan my face again tomorrow during day and see if it makes a difference.
     
  10. Packers1958 macrumors 65816

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    Apr 16, 2017
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    South Dakota
    #10
    It didn't for me either.
     
  11. allthingsapple! macrumors regular

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    Sep 4, 2014
    #11
    i stood in my bathroom and turned the lights off so it was pitch black and my phone worked perfectly fine every time.
     
  12. Aussi3 Suspended

    Aussi3

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    Jun 3, 2012
    Location:
    Facesticks on the App store
    #12
    Works perfectly fine for me I did it pitch black last night worked perfectly fine :)
     
  13. cheekyjeremy thread starter macrumors 6502

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    Aug 20, 2009
    #13
    Certainly seems to work much better when standing than when laying down.
     
  14. Bagio macrumors newbie

    Bagio

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    Edinburgh
  15. cheekyjeremy thread starter macrumors 6502

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    Aug 20, 2009
    #15
    and now it seems to work fine. Maybe I picked the wrong day to quit sniffing glue
     
  16. flat five macrumors 603

    flat five

    Joined:
    Feb 6, 2007
    Location:
    newyorkcity
    #16
    i don't think the screen brightness has anything to do with it.

    for example.. just turned my brightness all the way down.. then additionally covered the display except for the cameras..
    made the room completely dark..

    faceID worked fine

    ?

    -----------
    [edit] just saw your post right above mine so...
    nevermind :)
     
  17. Packers1958 macrumors 65816

    Joined:
    Apr 16, 2017
    Location:
    South Dakota
    #17
    I may have had the issue because when I did FaceID the phone was a bit too close to my face and probably did not get all of my head. So I held my arm further out, did the scan where my entire head was in the image finder. Works much better now in both light and dark.
     
  18. hasanahmad macrumors 65816

    Joined:
    May 20, 2009
    #18
    thats odd it works for me in a completely lightless room

    also you might want to do the 2 Profile Trick
     
  19. deadworlds macrumors 65816

    deadworlds

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    Jun 15, 2007
    Location:
    Citrus Heights,CA
    #19
    I also heard that iOS 11.1 was supposed to fix faceID issues. If you haven't updated, give that a try.
     
  20. Packers1958 macrumors 65816

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    Apr 16, 2017
    Location:
    South Dakota
    #20
    Whats the 2 profile trick?
     
  21. hasanahmad macrumors 65816

    Joined:
    May 20, 2009
    #21
    when setting up face ID it asks you to scan your face twice. first time do it with camera in front, second time do it with camera below your face as if you are looking down on it.
     
  22. deadworlds macrumors 65816

    deadworlds

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    Location:
    Citrus Heights,CA
    #22
    Im gonna take a wild guess here and say that you can try registering two faces when FaceID asks for two scans of your face. I have not tried this but would be interesting.
     

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21 November 3, 2017