Auto-Brightness & iPhone 3G: Anyone else?

[Nikhil72]

So I exchanged my first iPhone 3G for another one at the Apple Store today because of battery (today, with 3G, WiFi, and Push off, and Fetch for 15 minutes on, I was only able to get about 5 hours of iPod-based music playback before the phone died).

I noticed that when Auto-Brightness is set on the 3G, its brightness level seems to move *upwards* (i.e. it hovers towards the higher end of the spectrum) whereas my 2G tends to turn brightness down. This occurs no matter where I set the manual slider (which, I'm learning, sets a rough "middle-ground" about which Auto-Brightness functions...i.e., if I set the slider at 50% and then turn on Auto-Brightness, it will range anywhere from ~40-60% brightness).


Does anyone else notice that their 3G's Auto-Brightness tends to hover on the higher side? Or have I lost my mind?

(and I'm loving my 3G).

 

[djwobble]

So I exchanged my first iPhone 3G for another one at the Apple Store today because of battery (today, with 3G, WiFi, and Push off, and Fetch for 15 minutes on, I was only able to get about 5 hours of iPod-based music playback before the phone died).

I noticed that when Auto-Brightness is set on the 3G, its brightness level seems to move *upwards* (i.e. it hovers towards the higher end of the spectrum) whereas my 2G tends to turn brightness down. This occurs no matter where I set the manual slider (which, I'm learning, sets a rough "middle-ground" about which Auto-Brightness functions...i.e., if I set the slider at 50% and then turn on Auto-Brightness, it will range anywhere from ~40-60% brightness).


Does anyone else notice that their 3G's Auto-Brightness tends to hover on the higher side? Or have I lost my mind?

(and I'm loving my 3G).

How did you get them to exchange your iphone so quickly?

 

[Nikhil72]

I just made an appointment at the Genius Bar...they heard what I had to say, ran the diagnostics from the phone, and then they swapped me a full retail package phone.

 

[eldersi]

yep, me too

You're not losing your mind! I'm having the exact same issue and came to these forums hoping to find an answer. I have the white iPhone. It does not matter on the lighting around the iPhone, the screen brightness will jump up as it pleases. I'm doing a restore as I type this and plan on keeping it basic for a day to make sure nothing else is messing with it (3rd party apps).

Very strange. I really hope it's a bug in the OS and not hardware. I went through 4 iPhones prior to the 3G, I really don't want a repeat. Besides this, I'm loving it.

So I exchanged my first iPhone 3G for another one at the Apple Store today because of battery (today, with 3G, WiFi, and Push off, and Fetch for 15 minutes on, I was only able to get about 5 hours of iPod-based music playback before the phone died).

I noticed that when Auto-Brightness is set on the 3G, its brightness level seems to move *upwards* (i.e. it hovers towards the higher end of the spectrum) whereas my 2G tends to turn brightness down. This occurs no matter where I set the manual slider (which, I'm learning, sets a rough "middle-ground" about which Auto-Brightness functions...i.e., if I set the slider at 50% and then turn on Auto-Brightness, it will range anywhere from ~40-60% brightness).


Does anyone else notice that their 3G's Auto-Brightness tends to hover on the higher side? Or have I lost my mind?

(and I'm loving my 3G).

 

[Nikhil72]

I notice that it does seem to behave properly, but only after turning the device off and on again (i.e. turn auto-brightness on; turn light off, turn iPhone off and on again, the screen is dim...turn the light on, the screen brightens). It just seems that the 3G seems to be running at a higher brightness level (significantly) than the 2G despite the bar being at the same location.

 

[sgiles1]

I noticed this as well tonight. Out of the blue it suddenly got very bright even though the ambient room light didn't change. When I checked my brightness setting it was at auto and the level was set at about 30% (which is where I had set it earlier in the day).

 

[Nikhil72]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_0 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5A347 Safari/525.20)

interesting. Now, normally, it's supposed to work by setting a range around the manual slider, correct?

In practice, auto-brightness should help conserve battery life.

 

[Nikhil72]

It's still happening despite a restore and it's driving me nuts. Time to disable auto-brightness I think

 

[joshd]

I've seen this too. Almost as if it gets brighter in a darker situation and darker in a lighter situation.

 

[Scott-n-Houston]

I've seen this too. Almost as if it gets brighter in a darker situation and darker in a lighter situation.

Don't know how old this thread is, but I did a search and found it on google because I noticed this last night. I was in a pitch black room, and it was WAY bright. I went to brightness, my slider was at about 30-40%, and if I turned off Auto Brightness, it would go darker! Turn it back on, and it would go lighter. Auto Brightness was taking it to about the highest bright setting there is.

 

[Nikhil72]

yup, still doing it. I've turned off auto-brightness.

 

[alFR]

Have you reported this to Apple as a bug via www.apple.com/feedback?