iPhone 5 brightness sensor not working?

vaultwit

macrumors regular
Original poster
Sep 20, 2012
185
7
I think my brightness sensor is not working properly. I'll turn on my screen in the same exact physically location of a room an sometimes the screen is dim, sometimes it's bright. Even though the brightness at that location from the lighting is always constant. Anyone else have this problem?
 

iParis

macrumors 68040
Jul 29, 2008
3,662
26
New Mexico
Hm. Do you have another device to compare it to, even by memory? Last night I noticed my iPhone 5 was brighter than my 4. I didn't know what to think of it because I didn't know which device to go off of, like if my iPhone 5 was better at auto-brightness or which was more accurate.
 

fins831

macrumors 6502a
Oct 7, 2011
657
0
There isn't a bug with iOS6 auto brightness.

It's just more intelligent. You have to train it in a way.

I go into a pitch black room with auto brightness on, and then give it a sec for the sensors to pickup on the darkness, and I turn the brightness lower with auto brightness toggled on, then i walk into a room with ambient light, and turn the brightness higher...

go back into the room and back into the light, and itll adjust to the levels you set per darkness and light, and will adjust within those parameters.

You have to initially setup the auto brightness to the levels in darkness and light, and itll auto adjust to those levels from now on.
 

fronzman

macrumors newbie
Jan 5, 2012
21
1
No I think there IS a bug in iOS6 related to brightness. I do not use auto brightness, yet my 4s has on a couple occasions, gone in the dim mode, as if its about to sleep, and stayed there until I go into Brightness settings and touch the slider. Then it pops back to the proper brightness. Not a hardware problem either, this happened just after the update and never happened before.
 

tdar

macrumors 65816
Jun 23, 2003
1,022
485
Alpharetta GA.
No I think there IS a bug in iOS6 related to brightness. I do not use auto brightness, yet my 4s has on a couple occasions, gone in the dim mode, as if its about to sleep, and stayed there until I go into Brightness settings and touch the slider. Then it pops back to the proper brightness. Not a hardware problem either, this happened just after the update and never happened before.
We've seen this for awhile. It will do it with Auto on as well.
 

vaultwit

macrumors regular
Original poster
Sep 20, 2012
185
7
So I have another brightness problem I've noticed in addition to the one I mentioned in the OP. When I'm in a dark place and set my brightness level, then turn it on in a bright place, it is not bright enough. But when I set the brightness at a bright place, then take it to a dark place and turn it on, it is not dim enough. Yes the auto-brightness is option is enabled. It does adjust the brightness, but not nearly as much as it should.
 

ECUpirate44

macrumors 603
Mar 22, 2010
5,736
8
NC
I've noticed something strange with my brightness as well. For some reason, the brightness level is changing by itself. I have auto brightness on, but that shouldn't change the brightness setting, it should just dim and brighten the screen when necessary.