Develop Bugs

Battery Life Suggestions

Hi! I'll be going abroad in a couple of days and while I have tested most JB roms I'm not sure which rom has the best battery life. I'm currently using Rasbeanjelly and Trinity Stable 35 and I only got 3hrs of screen on yesterday (however I did have 3G enabled most of the time). Can anyone please suggest the best ROM for battery life ?
(Sorry if this has been asked before but I needed to know the answer with the latest roms)
Thanks

3h screen on is already decent for jb. You wont get much better.
Theres a lot of tweaks you can do. One of the most helpful ones is using a screen filter set at about 50%. Its good in the dark, sometimes in the sun you will wanna disable it.

Purchase an extended battery ASAP, they're awesome. Also, another recommendation is to buy an external battery that does at least 1AMP output.
Useful link for the battery.
Check out this item I found on eBay: http://pages.ebay.com/link/?nav=item.view&id=120832462058
You've pretty much done all you can software wise. Don't ever use auto brightness FYI, that seems to be a big thing that people do and wonder why there battery drains.
Sent from my Galaxy Nexus using xda app-developers app

I get over four hours of screen on time and over 12 hours of battery life with moderate use on stock jb. I consider this to be very good.
If you plan to use GPS a lot, an extended battery is recommended.
Sent from my Galaxy Nexus using Tapatalk 2

Samsung extended battery is quite nice and fits in most stock covers.
Sent from my Galaxy Nexus using Tapatalk 2

Thanks for all the replies
AlexWekell said:
Purchase an extended battery ASAP, they're awesome. Also, another recommendation is to buy an external battery that does at least 1AMP output.
Useful link for the battery.
Check out this item I found on eBay: http://pages.ebay.com/link/?nav=item.view&id=120832462058
You've pretty much done all you can software wise. Don't ever use auto brightness FYI, that seems to be a big thing that people do and wonder why there battery drains.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Do you mind explaining why auto brightness drains so much ?
Thanks

modstorm said:
Thanks for all the replies
Do you mind explaining why auto brightness drains so much ?
Thanks
Click to expand...
Click to collapse
Think of it this way:
On your phone is a variety of sensors that go off only at certain times (an example being the sensor to the left of your camera, it senses when your face is pressed up against your phone during a call and turns off your screen, call some and cover it with your finger, you'll see).
Now, for auto brightness there is a little hole in the upper right on the back of your phone. Turning auto brightness on keeps this little "camera" on permanently. It causes the phone go run a constant series of scripts telling it to adjust the brightness over and over again and on the fly.
I guess that's the best description I can give, I hope that helps.
Sent from my Galaxy Nexus using xda app-developers app

AlexWekell said:
Think of it this way:
On your phone is a variety of sensors that go off only at certain times (an example being the sensor to the left of your camera, it senses when your face is pressed up against your phone during a call and turns off your screen, call some and cover it with your finger, you'll see).
Now, for auto brightness there is a little hole in the upper right on the back of your phone. Turning auto brightness on keeps this little "camera" on permanently. It causes the phone go run a constant series of scripts telling it to adjust the brightness over and over again and on the fly.
I guess that's the best description I can give, I hope that helps.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Thanks I get your idea. I'll use the phone without auto brightness for a couple of days and see how it goes. Thanks for all the replies

AlexWekell said:
Think of it this way:
On your phone is a variety of sensors that go off only at certain times (an example being the sensor to the left of your camera, it senses when your face is pressed up against your phone during a call and turns off your screen, call some and cover it with your finger, you'll see).
Now, for auto brightness there is a little hole in the upper right on the back of your phone. Turning auto brightness on keeps this little "camera" on permanently. It causes the phone go run a constant series of scripts telling it to adjust the brightness over and over again and on the fly.
I guess that's the best description I can give, I hope that helps.
Sent from my Galaxy Nexus using xda app-developers app
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Click to collapse
That little hole in the upper right on the back of the phone is a 2nd mic for when your recording video to cancel noise. The auto brightness sensor should be on the front of the phone, as there are 2 sensors beside the front camera.
Sent from my Galaxy Nexus using xda premium

msavic6 said:
That little hole in the upper right on the back of the phone is a 2nd mic for when your recording video to cancel noise. The auto brightness sensor should be on the front of the phone, as there are 2 sensors beside the front camera.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
My mistake, thanks
Sent from my Galaxy Nexus using xda app-developers app

I Am Marino said:
Samsung extended battery is quite nice and fits in most stock covers.
Sent from my Galaxy Nexus using Tapatalk 2
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Click to collapse
And what battery might that be?

jzero88 said:
And what battery might that be?
Click to expand...
Click to collapse
The Official Samsung Extended Battery ( 2000Mah for GSM)
Here is a link so you can see it: http://www.expansys-usa.com/samsung-extended-battery-and-cover-for-gsm-galaxy-nexus-226962/
Sent from my Galaxy Nexus using xda premium

I also recommend the extended battery, I bought mine from Verizon and I get about 17 hrs. I need to play with the settings a bit more and try other kernels. I also suggest to select "never" in the email app, not the gmail. The app seems to wake the phone up the most.

if you wanna try a new rom, try this it's mine i've a very good battery life with it.
here's the thread for info
http://forum.xda-developers.com/showthread.php?p=29863202#post29863202
BigB1984
Sent from my Galaxy Nexus using xda app-developers app

Screen Brightness/Color issue?

So I've noticed that when I hold my GS3 next to my sisters hers looks brighter than mine, hers isn't rooted it's running stock TW. I'm not sure if it really is a brightness thing or if her colors are just more vibrant, I can't really tell. Also the bottom of my screen is oddly brighter when viewing blacks than the rest of the screen. Anyone know what this is or if it's fixable? I read somewhere that morfic's kernels make the colors more accurate or something like that but I'm not sure if it's true.
Info:
Rom: Frosty JB v3.0
Kernel: Stock
Modem: LI7

Gotta replace it.... My old one was yellowish. Now my new one makes a popping sound when playing music, you can't win them all.... My first one had a broken power button
Samsung quality control is ****
Sent from my SGH-T999 using xda premium

Are you using automatic or manual brightness when comparing? Auto brightness on a lot of JB roms are somewhat broken.

Manual for both, I flashed higher brightness levels that Wanam made and that sort of fixed the brightness thing. When comparing on lowest brightness hers is still noticeably brighter but on max it's about even. Mine actually looks a little brighter but the whites on her screen are more accurate or "crisp" so it appears that they are about even when mine is most likely brighter. This didn't fix the black screen issue unfortunately, I think it's also important to note that she has a white GS3 and I have a blue one, I looked on the internet and in some comparison videos where they do a side by side of both with a blank white screen the white S3 is noticeably brighter so that may be why.

theboss23 said:
Manual for both, I flashed higher brightness levels that Wanam made and that sort of fixed the brightness thing. When comparing on lowest brightness hers is still noticeably brighter but on max it's about even. Mine actually looks a little brighter but the whites on her screen are more accurate or "crisp" so it appears that they are about even when mine is most likely brighter. This didn't fix the black screen issue unfortunately, I think it's also important to note that she has a white GS3 and I have a blue one, I looked on the internet and in some comparison videos where they do a side by side of both with a blank white screen the white S3 is noticeably brighter so that may be why.
Click to expand...
Click to collapse
Not saying that there isn't a problem but it could all be an illusion. With a white phone the color probably makes the screen look whiter or "brighter" as compared to a darker colored border on ur blue phone
Sent from my SGH-T999 using xda app-developers app

That's what I thought at first but I all my friends and others said hers looked brighter as well and it's pretty noticeable with low brightness that hers is brighter.

theboss23 said:
That's what I thought at first but I all my friends and others said hers looked brighter as well and it's pretty noticeable with low brightness that hers is brighter.
Click to expand...
Click to collapse
Might as well contact Samsung and ask for a replacement for a faulty screen
Sent from my SGH-T999 using xda app-developers app

Are you using any sort of screen protector, could affect screen. Just a thought
Sent from my SGH-T999 using xda premium

Two things to consider.
Toghle the display setting for Auto Adjust Screen Tone.
Also, unless you are both on the same rom you wont be doing apples to apples. DJ' Frosty roms include the Bravia Engine i believe. This alone could cause the differences you are seeing. Odin back to stock, same build as the other phone. Make sure the settings are all identical. (Not just display, but all settings. Dev options, battery saver, etc)
If youre still having different results then you may have hardware issues.
One very Important question to ask yourself....would you even notice that your display might be sub par if you didnt have the side by side comparison?
Consider that before thinking about sending it in. Often you will get a refurb in return which can have much more annoying issues.
Sent from my SGH-T999 using xda app-developers app

DocHoliday77 said:
Two things to consider.
Toghle the display setting for Auto Adjust Screen Tone.
Also, unless you are both on the same rom you wont be doing apples to apples. DJ' Frosty roms include the Bravia Engine i believe. This alone could cause the differences you are seeing. Odin back to stock, same build as the other phone. Make sure the settings are all identical. (Not just display, but all settings. Dev options, battery saver, etc)
If youre still having different results then you may have hardware issues.
One very Important question to ask yourself....would you even notice that your display might be sub par if you didnt have the side by side comparison?
Consider that before thinking about sending it in. Often you will get a refurb in return which can have much more annoying issues.
Sent from my SGH-T999 using xda app-developers app
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Click to collapse
Yeah, I didn't really plan on sending it in, it's not that big a problem with higher brightness levels by Wanam so it's not really worth it. I was just wondering if something caused it or if it was a defect but as you said above the bravia engine could cause it so I'm okay with it, I'd rather have my rooted, less bright, boss of a phone running frosty JB v3.0 than stock TW with a slightly brighter screen. :laugh:

I've never really understood why ppl make mods for higher brightness or sound can't that hurt ur hardware I mean isn't there a reason why the max volume or brightness is set at that level
Sent from my SGH-T999 using xda app-developers app

otariq said:
I've never really understood why ppl make mods for higher brightness or sound can't that hurt ur hardware I mean isn't there a reason why the max volume or brightness is set at that level
Sent from my SGH-T999 using xda app-developers app
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Click to collapse
Often the levels are set with battery savings in mind. Also i doubt any manufacturer will set ranges to include true maximum as it could shorten device life and some components may have different tollerances from one batch to the next.
Yes setting levels too high can cause damage if you are not careful. People still make mods for this stuff for the same reason they mod every other part of android, to get more out of their device! Just about everything you see here on xda comes with some level of risk.
Sent from my SGH-T999 using xda app-developers app

I had this problem when I was using the power-saving feature.
Even after disabling powersaving my screen was all dark and messed up just like yours.
To fix it I had to enable powersaving, then go to power saving options and uncheck all four of the powersaving methods, then finally disable powersaving.
Only after that did my auto-brightness start functioning correctly again.

Tellymon said:
I had this problem when I was using the power-saving feature.
Even after disabling powersaving my screen was all dark and messed up just like yours.
To fix it I had to enable powersaving, then go to power saving options and uncheck all four of the powersaving methods, then finally disable powersaving.
Only after that did my auto-brightness start functioning correctly again.
Click to expand...
Click to collapse
Thanks! I'm not sure why it didn't effect her screen since she also has power saving on but after doing this my screens back to normal now.

Does anyone have the brightness mod? I went to the original link and unable to download it. Thanks in advance.
Sent from my SGH-T999 using xda app-developers app

Possible "auto-brightness" glitch?

When i select auto-brightness it takes my phone to the lowest possible setting regardless of the environment lighting and it stays there
wondering if i should take the phone back if it's just my phone...anyone else experience this?

Hmm mine seems t I slwsys be low by the I like it like thst.. Have not had a chance to take it outside yet due to the hurricane
Sent from my SPH-L900 using xda app-developers app

thanks for the feedback...i compared it side by side to my gs3 and my gs3 works as it should...my Note 2 goes all the way down to the lowest setting..
BTW im in north east MD...the eye past directly over us here ..we are about 1 hour and 20 minutes from AC new Jersey...

Mine also appears to be a bit on the low side. It is not at the lowest, but auto never appears to hit the highest brightness. When i am in sunlight, i have to untick auto and move the slider to max in order to comfortably read the screen. Hopefully it will get fixed.
JD

I've always thought Samsung's auto brightness sucked regardless of phone. The note 2 is no exception.
Try some apps in the play store, they work better.
Sent from my SPH-L900 using xda premium

shook187 said:
I've always thought Samsung's auto brightness sucked regardless of phone. The note 2 is no exception.
Try some apps in the play store, they work better.
Sent from my SPH-L900 using xda premium
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Click to collapse
SGIII didn't have any issue with brightness at all. At least for me.
Galaxy Nexus is absolutely horrible on the other hand. And I'm too lazy to play with AOKP adjustments so I have to do it manually everytime.
My Note II does appear a little darker than it should but I thought it might be only my perception. I'll take closer look at it.

meccadon123 said:
When i select auto-brightness it takes my phone to the lowest possible setting regardless of the environment lighting and it stays there
wondering if i should take the phone back if it's just my phone...anyone else experience this?
Click to expand...
Click to collapse
I thought I had the same thing. My phones brightness is all the way down with the auto box checked. I did however uncheck it and then the brightness dropped way down. I chalked it up to auto taking over and misrepresenting what the level of the brightness was on the screen. Dont know if you are seeing that or if you are seeing a true glitch.

i thanked all for your feed back...its obviously not just my phone...again my GS3 works very well...my note 2 not at all...I wonder if samsung set this up like this on purpose to save battery..either way auto-brightness is unusable for me...

Are these defects?

So i'm having 2 issues
1) you can see in the 2 of the pictures there is an area of yellow discoloration. I had this problem back when I got an iphone 4 and returned it the next day. But because wirefly has such crap return policies I rather keep the phone if this really usually is a temporary thing while the "glue settles" as been reported in the past
2) I'm getting this heat error when I try to increase the brightness of my screen. Today is the first time I tried upping it beyond the normal 63% due to trying to check out this discoloration issue. Note I did have an otterbox on my phone at that time but I wasn't doing anything CPU / GPU intensive. It seems a little ridiculous that the heat would not let me raise the brightness just on normal use.
Wondering if anyone else is having the same type of issues

ippikiokami said:
So i'm having 2 issues
1) you can see in the 2 of the pictures there is an area of yellow discoloration. I had this problem back when I got an iphone 4 and returned it the next day. But because wirefly has such crap return policies I rather keep the phone if this really usually is a temporary thing while the "glue settles" as been reported in the past
2) I'm getting this heat error when I try to increase the brightness of my screen. Today is the first time I tried upping it beyond the normal 63% due to trying to check out this discoloration issue. Note I did have an otterbox on my phone at that time but I wasn't doing anything CPU / GPU intensive. It seems a little ridiculous that the heat would not let me raise the brightness just on normal use.
Wondering if anyone else is having the same type of issues
Click to expand...
Click to collapse
I got the heat issue one time... i've seen others say they got it as well. I don't normally have my brightness that high though and when I got the message it wasn't really very hot. It does heat up during games and stuff though.

ippikiokami said:
So i'm having 2 issues
1) you can see in the 2 of the pictures there is an area of yellow discoloration. I had this problem back when I got an iphone 4 and returned it the next day. But because wirefly has such crap return policies I rather keep the phone if this really usually is a temporary thing while the "glue settles" as been reported in the past
2) I'm getting this heat error when I try to increase the brightness of my screen. Today is the first time I tried upping it beyond the normal 63% due to trying to check out this discoloration issue. Note I did have an otterbox on my phone at that time but I wasn't doing anything CPU / GPU intensive. It seems a little ridiculous that the heat would not let me raise the brightness just on normal use.
Wondering if anyone else is having the same type of issues
Click to expand...
Click to collapse
I am having the same issue. I bought mine last night from Best Buy.

Thanks guys, i'll wait and hope a future firmware fixes the heat. It didn't feel that hot in hand. The yellowing looks better today.

I put mine on the charger 30 minutes ago and the discoloration was gone, but as I was using it you could see that it was returning..

Not having any of those issues. Just traded my GS3 last night for this and loving it. Was able to get the screen to the full 100%. I normally keep all my phones displays at 0%. I guess I have sensitive eyes. Unless in sunlight.

The screen not being able to go to 100% is not a defect. It has been discussed in a lot of reviews for the phone both att version and Sprint version. As far as the yellowing of the screen if it doesn't go away soon I would say it's a defect.
Sent from my LG-LS970 using xda app-developers app

Thanks for the info Wally! I haven't seen those reviews, can you point me to them. So you would say not being able to go to 100% after just normal use is something that should be normal for a phone?

Speaking of defects, has anyone else noticed the color-banding issues on the display? Is there a way to re-calibrate the gamma on the display (As I'm sure that's the reason for the banding effect)?

Yep, I have the yellow screen at the bottom as well. Bought at best buy last night. Probably going to exchange it, but waiting to see if it goes away after some use.
Update::
I guess this is good news. The yellowing on the bottom of my screen has faded to almost half the amount it used to be. Its still not totally gone yet, but it does show promise. Perhaps this is the same issue that many iPad users had with the adhesive curing with heat and use.
Sent from my Nexus 7 using xda app-developers app

I had this same issue yesterday i went back to sprint and traded it for another one completely gone now. So it's defiantly a defect, It was weird it took a while before it showed up. If you can get an exchange do that

Exchanged mine as well. The new screen is much better. Seems like its a bit hit or miss.
Sent from my Nexus 7 using xda app-developers app

cassix said:
Exchanged mine as well. The new screen is much better. Seems like its a bit hit or miss.
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
Hmm I'm going to go into a store and check out their display to see if they viewing angle on it are good because mine aren't that great.

Never had heat issue, and I always use 100% brightness. Never had screen discoloration either.
You got a dud.
Sent from my LG-LS970 using Tapatalk 2

SurfaceFlinger

So while i was checking around trying to find battery saving info i ran across this ....
http://jsharkey.org/blog/2010/07/01/android-surfaceflinger-tricks-for-fun-and-profit/
It's interesting in the fact that it would be nice to possibly have a toggle to switch these on or off when you are doing things not requiring the full screen colors. Like reading emails, doing web searches or reading forums (most of my screen on-time) Some of the colors would be too hard to look at but some do not look so bad. plus it may almost double the battery life - - heck even if i got 14 hours with regular use then switched onto this some of the time i could add another 7-10 hours of battery time... could be very usefull when not near a power source or during storm events and power loss.
So who here is savy enough to make the app and would it work on any rom or have to be rom specific?

There is an app called galactic night in the market. Does what you described.
Sent from my SPH-L710 using Tapatalk 2

Jfree3000 said:
There is an app called galactic night in the market. Does what you described.
Sent from my SPH-L710 using Tapatalk 2
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Click to collapse
THANKS. - - going to fully charge and try it out. try to match up a typical day using it vs not using it.

just downloaded. the red screen isnt as bad to look at as i thought it would be (It almost looks like an orange theme). this will be interesting to see if it will increase battery by as much as almost double. If i get 24 hrs now - i'd be pushing 48 hours on a standard battery. That would be INSANE.

cm7 and/or cm9 had this feature built into it.

Some of the filtering doesn't stick when opening some apps. I found some other threads on it and it's a known issue on US S3's. There must be a way around it though to get the red filter to stick. I'm going to message the app developer. So far it is decumbent saving a lot of battery. Not sure I'd use it all the time, but it would be a huge benefit if out camping or if stuck without power or away from it all day.
Sent from my SPH-L710 using xda app-developers app