Hi
Has anyone noticed on their S4 that when you go onto the internet the screen brightness dims slightly? (happens on some other apps as well. I have got the brightness set to max and turned auto brightness off.
Does anyone know why this is happening?
This is a battery saving trick implemented by Samsung. Amoled screens eat up more juice on the white pixels and not much on the black ones. That's why the theme is dark too. There have been a few threads about this issue already, if you want more details.
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Does anyone know how to decrease even more it, beyond the minimal in the settings?
I think that minimal level is still pretty 'strong' when you are reading in a dark room.
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Screen filter app
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How nice is when the answer comes that fast? I'm still reading... =o)
Thank you very much..
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No worries
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The screen filter app is reported to drain battery. Google it and you will see. I can confirm personally that I was seeing drain with it compared to without. It will not show under the batter tracker.
Danmit...
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Screen filter on the nexus one helped a little. On min brightness an all black screen pulls 100 mA, and with screen filter on additional 30% pulled 85-90 mA. Wasn't a huge difference really.
asb123 said:
The screen filter app is reported to drain battery. Google it and you will see. I can confirm personally that I was seeing drain with it compared to without. It will not show under the batter tracker.
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I use screen filter and after a 9 hour day at work (phone unplugged for ~10hours) which I text, browse, and make calls on my phone I usually leave ~60-70% left on the battery.
CM7 will let you customize the screen brightness from 1 to 255. The phone screen doesn't show all colors past 4 though.
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obsanity said:
CM7 will let you customize the screen brightness from 1 to 255. The phone screen doesn't show all colors past 4 though.
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can you point where i can change it?!
obsanity said:
CM7 will let you customize the screen brightness from 1 to 255. The phone screen doesn't show all colors past 4 though.
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What do you mean past 4?
On your CM7 installed phone go to: Menu-Settings-CyanogenMod Settings-Display-Automatic backlight
You have to choose automatic screen brightness adjustment for this to work.
In lights levels section you can enable custom screen brightness levels. Make sure your "Screen dim level" setting is set to 1 to be able to go all the way to setting of 1. Now, go and choose "Edit other levels". In here you can specify, based on light sensor value, the screen lux value you wish to have along with the button value (the led button lights) my buttons don't seem to dim so I'm not sure if your device will. All values go from 1-255 (as long as you changed screen dim level to 1).
Anyway, play around in it and you can set your phone to do all the screen brightness adjustments for you as dim and as bright as you want.
Now, on my super AMOLED screen, when I pick anything below setting of 4 the screen looses some colors so that's why there is no point of setting it any lower.
Also, my light sensor has only 8 stages of lux recognition. They are 10,160,225,320,640,1280,2600,10240 (but 3000 seems to be the max you can set so the last will just max out anyway).
So in order to fake other numbers in between, the CM team came up with a filter which moves around at a specified interval from one setting to another. You can enable that filter at the very top option before you choose "Edit other levels..."
Have fun.
One other thing to add is that this can save a tone of battery as well as go easy on your eyes at night. You just have to figure out what the best settings are for you. Once you play with it for a while you'll figure it out. It took me a few days to come up with settings that work.
I got my GT 10.1 this past Monday and I have noticed auto brightness changes quite frequently. I can't figure out why. I don't think I am blocking the sensor but I don't know where it is...
Has anyone else had this issue? It's making me dizzy so I just turned off the auto setting but it seems like it should work.
Yes, mine does the same. I assume the sensor is next to the front camera, which I'm not obstructing. But the brightness level will change rapidly. I had to disable the feature. Found it default to a level too dark most of the time anyway.
I agree with it being too dark. At least I know I'm not the only one with the issue.
Same issue with me. Turned it off. I read that auto brightness burns more battery than full brightness cause it's constantly asking the CPU to make a decision regarding brightness.
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Interesting. I always thought that one if the purposes of auto brightness was to conserve the battery.
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I had this problem too. It would constantly change so i had to disable it.
Maybe samsung can put a fix out for it.
I imagine the algorithm included is very simple and uses very few cpu cycles, so I doubt it has an impact on battery life. Especially since it probably doesn't (shouldn't) run when the screen is off, so it shouldn't prevent the device from sleeping.
I agree the levels they have set are much too dim and make auto-brightness just about useless. I had the opposite problem with my Captivate, where the auto-brightness as too bright. Fortunately CM7 allows you to adjust the levels for auto-brightness. I hope we see something similar show up in a custom rom for the Galaxy Tab 10.1
Anyway, I keep mine set at 20% and that seems to work pretty well for me.
Where do you see the brightness percentage? I have a slider but don't see a percentage anywhere.
It's an approximation on my behalf.
I notice the same problem especially when holding the device vertically with my right hand on the front facing camera. I guess the ambient sensor is located somewhere where my hand is and thinks that I'm in dark room and automatically lowers the brightness. I also noticed that the brigthness change whenever I touch the screen so i guess its listening every time you touch the screen unlike the ipad where it refreshes evertytime it wakes up.
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mesasone said:
It's an approximation on my behalf.
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Ok. I thought I was missing something somewhere...
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Is very anoying, i was moving my head while the screen increase the brightness and move my head and decrease... over and over. So i switch to a custom brightness.
Maybe a useful post for some. I found this the other night, mainly because I was bored So if you use the app Screen Filter (which, by the way, is awesome for night time viewing in bed while the wife is asleep, you wont have to hear her say stop playing on your phone, because the screen is so bright!), but if you turn up screen filter all the way up to 100% brightness AND turn up your regular Android display setting up to 100%, you are basically getting your display level at 200%! And let me tell you...It is BRIGHT! I know this may be a useless post to most, but I found it to be actually very helpful in viewing my screen in direct sunlight, when the normal display brightness just wasn't enough.
Been using this app for months.
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I am having problems enabling and disabling it consistently, but when I do enable it at 100% with my Android brightness at 100% I don't see any further brightness.
Also what is the advantage of this over the regular manual brightness?
Milkman00 said:
I am having problems enabling and disabling it consistently, but when I do enable it at 100% with my Android brightness at 100% I don't see any further brightness.
Also what is the advantage of this over the regular manual brightness?
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I don't use it for brightness, I use it to dim the screen to a lower point that what you can do in the settings.
I've been using this app for a few months now. I love using it at night to watch a video in the dark, since the lowest setting for the brightness always seems to hurt my eyes in the dark.
That sounds unbelievable yet I believe it. I'd be concerned though that doing this might shorten the screen's life or damage it. As for that app it's been on my homescreen for a long time. Pretty essential.
Only problem is soft keys ofter are too bright for night veiwing
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I have tasker set to open screen filter at a low brightness at 11 pm
/sig
Avelnan said:
Phones are going to come to life someday. Take note: LG Optimus line. ASUS Transformer. And now the Nexus Prime.
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Hi,
I bought a Nexus 7 32GB Wifi version yesterday from Carphonewarehouse.
I brought it home and it asked to update, I let it update to 4.2, with automatic brightness my screen is very dim, I mean its not nice to view with automatic brightness as it seems to dim the screen to much.
I know people are having problems with latest update etc, as I updated immediately when turning on device etc I cannot be sure if this is due to the update or it was like it before the update, I would like to use automatic brightness to conserve power but it seems to dim the brightness to much and I also notice the brightness level adjusts quite a bit in same lighting and is very noticeable when viewing screen.
When using full brightness the screens brilliant.
Is this part of the 4.2 bugs ?
I disabled auto sync for Google Currents to help some performance issues for now.
As this is my first tablet and updated immediately I can't compare differences between updates to know if its just a bug.
How long does it take to charge the tablet fully approx ? as mine seems to take ages, again I am aware this is possibly another bug after 4.2 update.
PS: I here that I should have got a £15 Google credit but never got an email and I had to pay by card when I purchased a £2 app as no option to choose Google credit only to pay by card. Was this a limited time offer or something as am gutted I not got it ?
Thanks for any help/advice!
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Hi,
Unfortunately the screen flickers issue is a well known issue to nexus 7. Since you just bought it, I would recommend exchange it and hope you get a good one. Mine is having the same issue but I kinda get used to it. Good luck...
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If automatic brightness does not work the way you want turn it off. Flicker gone.
It is a checkbox under settings / display.
I like mine best with brightness set to about 50%. An added bonus is that really extends battery life.
I highly suggest giving lux a try. I bought it because I found the minimum brightness on the n7 was too bright for night reading. It has a lot of settings to tailor the auto brightness to your taste. I turned off the android auto brightness and set the manual brightness almost all the way down and let lux adjust it from there.
4.2 totally screwed up automatic brightness, made it super sensitive. best option right now is to turn it off and change thaw brightness manually
Thanks everyone for replying, gonna just turn off auto brightness and set it to 50%, its ok at 50%, thanks much appreciated!
Fingers crossed an update will sort the sensitivity out.
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What does the flicker everyone refers to about auto brightness look like? I don't think I experience this issue. It may be the lighting I have around doesn't cause it.
What I DO have an issue with is low brightness either manual or auto in dim rooms where I don't want to be blinded, is the flickering caused by WiFi signal being low. This isn't the same issue others refer to here is it?
snarlytaz said:
What does the flicker everyone refers to about auto brightness look like? I don't think I experience this issue. It may be the lighting I have around doesn't cause it.
What I DO have an issue with is low brightness either manual or auto in dim rooms where I don't want to be blinded, is the flickering caused by WiFi signal being low. This isn't the same issue others refer to here is it?
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If it flickers on manual - you have a different issue.
Some devices have screens that are significantly dimmer than others on all brightness settings (I've had 4 so I should know). I've got an n7 that the screen is virtually unusable on auto under some conditions. I complained and got a replacement and they've never bothered picking up the faulty one. My Mrs has it now and it doesn't bother her but, side by side with my n7, its a massive difference. If it bothers you return it because it'll really get on your nerves after a while.
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my device died anyway so took back for replacement. I decided not to update to 4.2 as auto brightness works excellent without update and no bugs either so will wait for a more stable update, much happier now. Thanks!
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My setup for auto brightness is +2
Reaction time from dark into sunlight is almost immediately
Reaction time from sunlight into darker area takes almost forever. It takes almost complete darkness for the screen to go back!!
Normal or not??
Thanks for any reply.
Gr. Marc
I noticed that too - The screen get brighter in a matter of nanoseconds but when I am in a dark environment it takes a minute or two and sometimes it never turns the brightness down. Hope they'll fix that with an update or something soon.
Anyway, what I did to go past that is turning down the brightness and then setting it back to auto brightness when I am in a dark environment.
Normal. But rubbish. Lol.
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Same thing here... My GS4 was instant...
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big samm said:
Same thing here... My GS4 was instant...
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I have the exact same issue with my S5 when power saving is enable...
I disabled power saving mode for now.
Check out Lux Auto Brightness. I can't live without it.
https://play.google.com/store/apps/details?id=com.vito.lux