iOS 9.3 Beta 5 Brightness Issue/Overheating

Discussion in 'iOS 9' started by tripmusic, Mar 4, 2016.

  1. tripmusic macrumors 6502

    tripmusic

    Joined:
    Oct 26, 2012
    Location:
    MA
    #1
    I just recently activated a Boost iPhone 6s. I upgraded it to the 9.3 Beta 5 and as it was charging through iTunes at about 67% it got dangerously hot. I first noticed it and struck me as odd and then it just got hotter. It cooled down eventually, it may have been syncing the time? Then, today I noticed it next to another 6s and the brightness on mine seemed weaker, even all the way up. So now I just restored to 9.2.1 and the brightness seems to function normally? Anyone else experiencing these issues? Is there a way to download an earlier Beta other than the latest ota? If this thing overheated that badly, should I just exchange it to be safe?
     
  2. lagwagon Suspended

    lagwagon

    Joined:
    Oct 12, 2014
    Location:
    Calgary, Alberta, Canada
    #2
    It's normal for an iPhone (especially since the 6) to get pretty warm (near hot) when charging. Syncing, depending how much data it's syncing over at the same time as charging only adds more heat to that. Charging, a large sync, heavy network activity, games(high CPU) are all things that can get it heating up. Doing more than one at the same time will make it more noticeable.

    It's more noticeable since the 6 because of the all aluminum design. It's basically a heatsink and helps disipate the heat. Aluminum is efficient at keeping the internals cooler but it's more noticeable to the touch as a result. Nothing to really get scared about. If it gets to dangerous levels (for the phone itself) the phone shuts off as a precaution.

    I don't think it has anything to do with your brightness issue (not sure 9.3 beta 5 would either.)
     
  3. tripmusic thread starter macrumors 6502

    tripmusic

    Joined:
    Oct 26, 2012
    Location:
    MA
    #3
    Well my iPhone 6 never got that hot doing anything. It really seemed excessive with the 6s. It seems to have lost some contrast upon further examination, I put it side by side with my 6 with the same settings.
     
  4. Yun0 macrumors 65816

    Yun0

    Joined:
    Jun 12, 2013
    Location:
    Winnipeg, Canada
    #4
    my 6 gets fairly hot too when doing stuff with itunes for long periods like restoring a backup etc. that actually pulls so much power with it plugged into the computer itll still lose battery
     
  5. sbailey4 macrumors 68030

    sbailey4

    Joined:
    Dec 5, 2011
    Location:
    USA
    #5
    Comparing a 6 and 6s side by side may yield different results as far as contrast, brightness levels and other display parameters. Those two have different displays so a side by side comparison may in fact be a little different between the two.
     
  6. hojx macrumors 6502

    hojx

    Joined:
    Jan 18, 2014
    Location:
    Singapore
    #6
    Also, when the phone is overheating (during charging, sync, etc.), iOS automatically reduces the brightness to somewhat alleviate the overheating.
     
  7. XTheLancerX macrumors 68000

    XTheLancerX

    Joined:
    Aug 20, 2014
    Location:
    NY, USA
    #7
    Was just about to say this. Contrast and brightness go down when the device is getting too hot, just like what low power mode does, except maybe to a larger degree.
     
  8. tripmusic thread starter macrumors 6502

    tripmusic

    Joined:
    Oct 26, 2012
    Location:
    MA
    #8
    Right, but now the screen appears duller and not as bright now whether it's charging or not. I'm going to take it to the Apple store and see what they say.
     

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