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I tried setting my Vibrant to the lowest possible brightness level (with auto brightness disabled, of course). It still seems very bright to me compared to the lowest level on every other phone I've used. I realize this phone has a nice screen, etc. but is there no way to make it dimmer in situations where you just don't need that bright of a display and want to save battery?
Edit: I want to clarify, I love the screen's brightness, I'm just mainly asking for battery saving purposes.
I was running a black bg for a while. It would seem to be your best option for both issues. It was said in another thread that black uses the least amount of battery.
Vibe the XDApp
You can get tinted screen protector....The bright vibrant screen is the best thing on this phone.
Sent from my Samsung Vibrant using XDA App
All~G1 said:
I was running a black bg for a while. It would seem to be your best option for both issues. It was said in another thread that black uses the least amount of battery.
Vibe the XDApp
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Interesting idea, i'll try it.
STi489 said:
You can get tinted screen protector....The bright vibrant screen is the best thing on this phone.
Sent from my Samsung Vibrant using XDA App
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Yeah, that's not my complaint. No doubt this screen is awesome
What I mean is that I'd actually like to increase battery life further by going even dimmer, if possible.
Then a black background is a good idea, black pixels literally use no battery on an AMOLED screen because the pixels aren't on when they're black, so it's a true black. That's the wonderful thing about these screens, and why the contrast ratio is so ridiculously high. Also why the Kindle app has the color reversal option, making the background black and the text white, and a lot of the UI uses black in places I've seen stock android white or gray. I read a couple chapters of Sherlock Holmes the other day and my battery went down 2%. Awesome screen.
Also the web browser has a separate brightness setting.
Homestar1217 said:
..I read a couple chapters of Sherlock Holmes the other day and my battery went down 2%. Awesome screen.
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**slow reader..jk
maybe one of the genius phone gods could post a mod for a supper dim night mode. hint/nudge :burning eyes:
I would have to agree even on low the brightness of the screen is very high. I didn't realize this until today my friend wouldn't believe me I had brightness on low (his Droid's screen looked like crap compared to mine ).
Thanks for the tip on the black background... I really do need to find out ways to improve battery life on this thing.
I made a similar thread a while ago. For me it's too bright in low light situations. I'd love to see a way to lower the lowest setting.
+1, i'd like to see to an option to go even dimmer.
Sent from my GT-I9000 using XDA App
Same here. The browser is downright blinding in low-light.
Hey I'm not the only one who thinks the phone should have much lower brightness settings. I think I've seen it dim lower than the lowest brightness, but only on auto mode and only for a short time. Or maybe not. But I'm sure it can go lower because it would be weird if it couldn't. I also much rather have dimmer colors than a black vacuous screen for battery savings.
It does go lower. Put the brightness on manual and set it to lowest possible then wait for it to timeout and go to sleep. 5 secs before it goes to sleep the screen goes dimmer. On the G1 the lowest setting was this pre-sleep brightness. On the Vibrant we can't get that level as an option. Fingers crossed a non-samsung rom like CM6 will fix this.
SykesAT said:
It does go lower. Put the brightness on manual and set it to lowest possible then wait for it to timeout and go to sleep. 5 secs before it goes to sleep the screen goes dimmer. On the G1 the lowest setting was this pre-sleep brightness. On the Vibrant we can't get that level as an option. Fingers crossed a non-samsung rom like CM6 will fix this.
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Good observation. Indeed hopefully its fixed in a custom ROM or even by samsung themselves (though i'm not holding my breath on that one).
Alarm Clock Plus
The "dim mode" in Alarm Clock Plus is really dim. It would be nice to have a setting that would allow me to drop the brightness down that much.
yeah, because even on low MY EYES, They BURRRN!
lol
seriously
+1 for supporting this thread!
+1 for lower brightness option.
+1 from me too. This thing lights that whole dang room when my wife is trying to sleep.
Sorry it took so long to reply to this thread. I had to go find my sunglasses.... Seriously though, I read in bed at night and yeah its way too bright.
Has anyone seen a hack to change the default autobrightness for the fascinate? I am coming from the Droid X and this was an option offered by a user on this forum. I am asking this because I noticed that at the lower settings the screen is plenty bright enough to be usable and that the display alone consumes about 34% of my battery life. I am getting 8 hours on a full charge but more battery is always good. Any help or point inthe right direction would be awesome.
You dont need a hack to turn off auto brightness. Just go to sound and display settings and turn it off, then change brightness to whatever you want.
Sent from my SCH-I500 using XDA App
I turned off auto brightness on my fascinate and have the brightness set to max. I am a power user and my battery lasts about 10-12 hours easy... Then again I use a dark theme...
i don't think he's asking about turning off autobrightness, i think he's refering to the fact that if you have autobrightness set, the lowest it will go is about 33%. it could save battery life, and still have the advantage of automatically lightening when you need it if the autobrightness would go as low as 5-10%. if i'm understanding correctly. but no, i haven't seen a way to do that yet. sorry.
sonofskywalker3 said:
i don't think he's asking about turning off autobrightness, i think he's refering to the fact that if you have autobrightness set, the lowest it will go is about 33%. it could save battery life, and still have the advantage of automatically lightening when you need it if the autobrightness would go as low as 5-10%. if i'm understanding correctly. but no, i haven't seen a way to do that yet. sorry.
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Oooh.. I dig ya. My bad.
Sent from my SCH-I500 using XDA App
Hi all Devs,
I came across this mod which allows you to save power on our devices by turning off certain colours on the OLED display.
Have a look
http://jsharkey.org/blog/2010/07/01/...un-and-profit/
I was wondering if a dev/kernel guy could maybe get this on our devices? I like the look of Amber and Salmon as it gives it a retro 70's look but the red only would be good for night time mode/hunting/army use.
cyanogenmod has that feature integrated, so you can try it. i didn't like it myself. also you will not save 50% battery but the display will only use up to 50% less. i guess this will reduce the overall power use by ~10-20%. but believe me, this is nothing you will use very often
Sent from my GT-I9000 using XDA App
correct link is: http://jsharkey.org/blog/2010/07/01/android-surfaceflinger-tricks-for-fun-and-profit/
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.
Sent from my Galaxy Tab 10.1 using Tapatalk.
Interesting. I always thought that one if the purposes of auto brightness was to conserve the battery.
Sent from my DROIDX using XDA App
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.
Sent from my GT-P7510 using XDA Premium App
mesasone said:
It's an approximation on my behalf.
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Ok. I thought I was missing something somewhere...
Sent from my DROIDX using XDA App
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.
We all know about turning your brightness down saves battery life... but I had to wonder, why when I had my brightness down so low, on swagged out stock, was my display using over 70% of my battery life and draining my phone out so fast. It was an issue on every other rom too, so I thought it was just a hardware issue.
I discovered the culprit.
Its the backlight on the capacitive buttons on the bottom!
I discovered this by trying out cyanogen, and I was tweaking the autobrightness calibrations. I discovered that regardless of screen brightness, the buttons were at 255 for 4 of the 10 tiers of brightness, while the other 7 they were at zero.
Well, when I'm in a room bright enough for tier 2-4, I don't need the light, and I checked a dark room for the bottom tier, and dropping it all the way down to 1 (from 255 mind you!!!) was sufficient. This stopped LCD backlight bleeding on the bottom edge of the device that was annoying the heck out of me!!!
I also recalibrated autobrightness to what I'd use as manual brightness at various light conditions.
I tried it with very active use for a few hours...drastically slower battery life drain.
Since I'm on cyanogen 7.2 nightly (night after RC3 came out), I'm using the tiamat 4.1.1 kernel.
My CPU drain is semi irrelevant because I use smartassv2, using nstools, to recalibrate the governor to be much more battery friendly. My ideal, sleep, and wakeup speeds are 100mhz, while my max is 100, and min is 85. Doesn't feel laggy at all. Clock is still 245 to 998mhz.
I think you are onto something big here.
I've also noticed that on some roms the display is always the biggest drainer. By back light you mean the 4 button at the bottom right. Now I'm on Deck's Reloaded and loving it but would like to improve on battery. The best rom ever that I have had is MikMik v3.11 with AnthraX 2.6.38.6-REV_004 kernel. Display was never the biggest drainer, in fact the battery would last way too long, I thought something was wrong with my phone setup. I guess either Mik rom or Anthrax kernel had a tweak for back light built in. Now that I remember it was after I installed Anthrax kernel. It was a great setup but ran out of mem all the time.
Thanks so much for sharing I think i've seen a setting for this in the rom I'm sporting now.
Not that Deck's Reloaded is bad on battery its good+ but there is always an new improvement to try out.
Angelus359 said:
I checked a dark room for the bottom tier, and dropping it all the way down to 1 (from 255 mind you!!!) was sufficient. This stopped LCD backlight bleeding on the bottom edge of the device that was annoying the heck out of me!!!
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There is no difference in light output between 1 and 255. If it is anything other than zero, the capacitive lights are fully "on" (and light bleeds just as much as it ever does).
But if what you say is true (ie the backlight behind the capacitive buttons causes a lot of battery drain), then yes, it's a great idea to set it to zero for the three levels above total darkness that aren't already zero.
Lux brightness can fix this its an extremely customizable brightness app that you can choose thresh hold for captive lights and how bright your screen is in a particular light
sent from Josh's Reloaded Evo
jrollercoasters said:
Lux brightness can fix this its an extremely customizable brightness app that you can choose thresh hold for captive lights and how bright your screen is in a particular light
sent from Josh's Reloaded Evo
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Click to collapse
+1 for Lux...quick and easy
any lux or doenst matter?
I just disabled the bottom button light for all frequencies. I know where and what the buttons are/do from memory.
I've noticed SERIOUS improvements. I've noticed on manual brightness, its always on.
Angelus359 said:
We all know about turning your brightness down saves battery life... but I had to wonder, why when I had my brightness down so low, on swagged out stock, was my display using over 70% of my battery life and draining my phone out so fast. It was an issue on every other rom too, so I thought it was just a hardware issue.
I discovered the culprit.
Its the backlight on the capacitive buttons on the bottom!
I discovered this by trying out cyanogen, and I was tweaking the autobrightness calibrations. I discovered that regardless of screen brightness, the buttons were at 255 for 4 of the 10 tiers of brightness, while the other 7 they were at zero.
Well, when I'm in a room bright enough for tier 2-4, I don't need the light, and I checked a dark room for the bottom tier, and dropping it all the way down to 1 (from 255 mind you!!!) was sufficient. This stopped LCD backlight bleeding on the bottom edge of the device that was annoying the heck out of me!!!
I also recalibrated autobrightness to what I'd use as manual brightness at various light conditions.
I tried it with very active use for a few hours...drastically slower battery life drain.
Since I'm on cyanogen 7.2 nightly (night after RC3 came out), I'm using the tiamat 4.1.1 kernel.
My CPU drain is semi irrelevant because I use smartassv2, using nstools, to recalibrate the governor to be much more battery friendly. My ideal, sleep, and wakeup speeds are 100mhz, while my max is 100, and min is 85. Doesn't feel laggy at all. Clock is still 245 to 998mhz.
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Click to collapse
Good info, I will play around with my settings and see what kind of progress I can make improving battery life and report back here.
downloading screen filter app from the market disables soft key buttons and dims brightness to whatever you want with a touch of a button.
Sent from my PC36100 using XDA
After more experimentation, I have found that this has to be the single largest change on extending the evo's battery in history, besides not running the screen at max.
I finally don't murder my battery every day!
After I did my testing, I actually put in a new battery, anker 1700mah from amazon, and it got even better Now I really only need to charge every 2 days.
Great info-will have to do some messing around and check it out!
Sent from my ICS EVO using XDA
Angelus359 said:
After more experimentation, I have found that this has to be the single largest change on extending the evo's battery in history, besides not running the screen at max.
I finally don't murder my battery every day!
After I did my testing, I actually put in a new battery, anker 1700mah from amazon, and it got even better Now I really only need to charge every 2 days.
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I just got the same battery yesterday is yours draining fast i dont know if maybe it soposto do that.
Sent from my PC36100 using xda premium
Ok... what exactly are you talking about with 255 and tiers? The only way I know to adjust the screen brightness is on the slider under settings, display, then just slide it over.
Please inform so I can save my battery from early death too
Angelus359 said:
We all know about turning your brightness down saves battery life... but I had to wonder, why when I had my brightness down so low, on swagged out stock, was my display using over 70% of my battery life and draining my phone out so fast. It was an issue on every other rom too, so I thought it was just a hardware issue.
I discovered the culprit.
Its the backlight on the capacitive buttons on the bottom!
I discovered this by trying out cyanogen, and I was tweaking the autobrightness calibrations. I discovered that regardless of screen brightness, the buttons were at 255 for 4 of the 10 tiers of brightness, while the other 7 they were at zero.
Well, when I'm in a room bright enough for tier 2-4, I don't need the light, and I checked a dark room for the bottom tier, and dropping it all the way down to 1 (from 255 mind you!!!) was sufficient. This stopped LCD backlight bleeding on the bottom edge of the device that was annoying the heck out of me!!!
I also recalibrated autobrightness to what I'd use as manual brightness at various light conditions.
I tried it with very active use for a few hours...drastically slower battery life drain.
Since I'm on cyanogen 7.2 nightly (night after RC3 came out), I'm using the tiamat 4.1.1 kernel.
My CPU drain is semi irrelevant because I use smartassv2, using nstools, to recalibrate the governor to be much more battery friendly. My ideal, sleep, and wakeup speeds are 100mhz, while my max is 100, and min is 85. Doesn't feel laggy at all. Clock is still 245 to 998mhz.
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Click to collapse
For whoever this helps:
I've been using Karma's Heaven ROM since last saturday and the battery life has just been AWESOME!. I've tried about 30 different ROMs in the past year and this seems to have finally done it for me.
Just my 2cents.
Hey all not trying to threadjack, but is there a way to disable the buttons so when it is dark they come on, but off when it is bright out?
patmanz28 said:
Hey all not trying to threadjack, but is there a way to disable the buttons so when it is dark they come on, but off when it is bright out?
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The short answer is yes. The slightly longer answer is that it can be done but the ease of doing it depends on your ROM.
If you are on a CM9 based ROM you can use this:
http://forum.xda-developers.com/showthread.php?t=1702125
Although it says it's for CM9, it should work with other aosp roms as well...I've used it on Decks reloaded and Paranoid Android. I couldn't tell you about Sense
jrollercoasters said:
Lux brightness can fix this its an extremely customizable brightness app that you can choose thresh hold for captive lights and how bright your screen is in a particular light
sent from Josh's Reloaded Evo
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Cant get it to work can u explain how to make it work
Sent from my PC36100 using xda premium