Screen is dark when unlocking....

[frunze]

Phew! I thought it only happened to me. Wait a minute, is there echo in here??

I like when things function the way they're supposed to, especially if you've paid good money for them. It only happened once to me, but it's stupid things like this that make me doubt the integrity of the device or the system, to some extent.

 

[ratbatblue]

The Auto Brightness function on my 3GS seems not to have the same opinion as I do about what is bright enough in a dimly lit room. That is to say, it is very slow to read my mind and react. I noticed a similar problem on the old 3G, but it wasn't as slow to adjust. Sometimes I get tired enough of waiting that I turn off Auto Brightness. Most of the time I just squint.

 

[jbernie]

add me to the list... 3G S.

 

[2good2btru]

Same here. I was, again, worried that I was the only one. Although I'm happy to say that mine isn't nearly as frequent as others. Only once or twice a week.

I'm eagerly awaiting the 3.1 update.

 

[MACoconut]

Happened to me twice in a week.

I'll have to unlock the phone, go to settings & tap on the brightness once, and it'll go back to normal again.

BTW, my autobrightness if not switched on, so I doubt it's the ambient sensor's problem.

Probably a S/W problem

 

[hardliner]

What is going here? Screen's getting dark after 8 p.m.

Gentlemen,

I received my brand-new iPhone 3G (must renew my avatar). It is a nice piece of work.

Anyway, I spent the entire day jailbreaking it. But now, when it gets darker and darker, after the slide the iphone stay dark. You hear the slide sound, and then you see nothing. When I turn on the light switch in my house, all of a sudden the screen comes back with its full colors. Auto brightness is on of course. Turning the light off and unlocking the iPhone makes it getting darker again.

I rebooted it, and made even several resets. Please, help me and don't tell me to put the auto-brightness onto "off". This would be really lame, since I had no problems with my old 2G.

Best Regards

 

[sfditty]

I've noticed a problem with auto-brightness with my 3Gs from the very beginning, and from 3.0 to 3.1.2. But it is very predictable, not at all random on my phone. If I've just restarted the OS ( by holding the sleep button and the home button down), auto-brightness will do nothing when it comes back on- it might as well be turned off. If I then press the sleep button and turn the screen back on (after it's unlocked), it's back to normal regarding auto-brightness. But here's the strange thing- when auto-brightness is working (i.e. I haven't just rebooted), it only brightens, and never darkens. So this means that if I hold my thumb over the light sensor (top-left) before unlocking, then remove it after it's unlocked for a few (or even many) seconds, it will get brighter. But if I open it normally, then after a while I put my thumb over the light sensor, it will not dim at all. I actually use this bug/feature: when I'm in a dark room and want to play a game that I like to be bright, I will unlock it with the lights on, then turn the lights off and turn the game on- this way it is stuck at the "lights-on" auto-brightness level. Can anyone confirm that their device works like this? BTW, it's very hard to see this unless you have the brightness set to less than half, and the lower the brightness level, the easier it is to see.

 

[sfditty]

I just checked out what I wrote about above with my 3G running Os 3.0 (as opposed to my 3GS running 3.1.2- the 3G performs *exactly* the way I describe my 3GS performing above. This convinces me that 1) it's not a random problem (at least not on my two iphones), 2) my 3GS isn't broken (i.e this is normal performance given the software).

I can't imagine why Apple chose to implement auto-brightness this way, and worse-yet, to leave users to have to figure out for themselves how to properly use auto-brightness by having to run controlled experiments across different iphone models and OS versions.