Develop Bugs

3 hour screen time normal?

So basically I've had the nexus for 2 days now, and battery life is bad for my standards. I had the Note for 2 weeks and averaged 6 1/2 hours of screen on time before the battery went dead, that includes browsing mostly on the web and the xda app. The only thing on was data and bluetooth, no wifi. On the nexus, with everything off except data, I only average 3 hour screen time. Is this what other folks are experiencing on their nexus?
Sent from my Galaxy Nexus using xda premium

mike2518 said:
So basically I've had the nexus for 2 days now, and battery life is bad for my standards. I had the Note for 2 weeks and averaged 6 1/2 hours of screen on time before the battery went dead, that includes browsing mostly on the web and the xda app. The only thing on was data and bluetooth, no wifi. On the nexus, with everything off except data, I only average 3 hour screen time. Is this what other folks are experiencing on their nexus?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
The note's battery is one and a half times the size as the galaxy nexus battery..
2500 mah compared to 1750..
Sent from my Galaxy Nexus using xda premium

I was denied a Nexus last week so waiting until tomorrow now. I have a Rezound atm and on this thing it lasts about 2 - 2 1/2 hours(constant use).
just last night I played a game called Sentinal 3 on it. phone was in CDMA mode(LTE off), bluetooth & wifi disabled, and brightness all the way down. when I started playing the battery was at 93%... played 2 levels, took a break & then the battery was at 34%.
granted, each level took about 20min... but still...

I get about ~4 hours of screen time before my battery is dead. Really depends on what I'm doing, and how spread out those 4 hours are.

I'm getting about 3/12 on a work day. With about 25% left. Which is pretty damn good considering the screen. My gpu is 384 mhz and my undervolt's are 250mv+ for each frequency. This weekend i'm seeing if i can get 5 hours screen time with wifi. I know i can get 4 hours plus already and that was before patching my kernel for upping the gpu and undervolting.
Sent from my Galaxy Nexus using xda premium

rashad1 said:
I get about ~4 hours of screen time before my battery is dead. Really depends on what I'm doing, and how spread out those 4 hours are.
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I should have mentioned that those hours I was talking about were spread over 12-14 hours each day. Btw, would changing kernel and ROM improve battery?
Sent from my Galaxy Nexus using xda premium

I get about ~5 hours of screen time before my battery is dead

mike2518 said:
I should have mentioned that those hours I was talking about were spread over 12-14 hours each day. Btw, would changing kernel and ROM improve battery?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
It's possible, depending on the ROM and kernel.

mike2518 said:
So basically I've had the nexus for 2 days now, and battery life is bad for my standards. I had the Note for 2 weeks and averaged 6 1/2 hours of screen on time before the battery went dead, that includes browsing mostly on the web and the xda app. The only thing on was data and bluetooth, no wifi. On the nexus, with everything off except data, I only average 3 hour screen time. Is this what other folks are experiencing on their nexus?
Click to expand...
Click to collapse
Note has pretty much the same screen as the Nexus (exactly the same except 1280x800 vs 1280x720), but a massively larger battery. That will allow higher screen on times.

martonikaj said:
Note has pretty much the same screen as the Nexus (exactly the same except 1280x800 vs 1280x720), but a massively larger battery. That will allow higher screen on times.
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Click to collapse
The Note's screen is over half an inch bigger..

mike2518 said:
I should have mentioned that those hours I was talking about were spread over 12-14 hours each day. Btw, would changing kernel and ROM improve battery?
Sent from my Galaxy Nexus using xda premium
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Click to collapse
Mine was 3 hours too over 12 hours. Not 3.5. This is before i patched my kernel for undervolting. Also my workday is strictly cellular data with many high rises so my cellular is constantly switching radios beause of reception and congestion. I am very very pleased with how well it does. My standby drain is ridiculously good. I get about 1% drain an hour at work and about 1% drain every 2-3 hours at home. I still haven't tested light flow because it is not playing nice with ics yet. I'm sure that will affect my drain. I think people's expectations were/are too high for display time. People that are social nuts and have a live ticker feed on their homescreen so they know when their friends are picking their nose should get the s-lcd version of the nexus. Lcd power drain is a lot more linear compared to amoled screens.
Sent from my Galaxy Nexus using xda premium

joshnichols189 said:
The Note's screen is over half an inch bigger..
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The note's battery is a third bigger too.
Sent from my Galaxy Nexus using xda premium

joshnichols189 said:
The Note's screen is over half an inch bigger..
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Click to collapse
Same panel same resolution though. Its pushing relatively the same number of pixels as the Nexus, but with a bigger battery.

voxigenboy said:
I was denied a Nexus last week so waiting until tomorrow now. I have a Rezound atm and on this thing it lasts about 2 - 2 1/2 hours(constant use).
just last night I played a game called Sentinal 3 on it. phone was in CDMA mode(LTE off), bluetooth & wifi disabled, and brightness all the way down. when I started playing the battery was at 93%... played 2 levels, took a break & then the battery was at 34%.
granted, each level took about 20min... but still...
Click to expand...
Click to collapse
Ahh u trader.....I'm telling...LOL..I'm grabbing mine tomorrow as well bro. Hopefully there still available in the afternoon and they don't sell out. I'm hoping the batt life is a lil better than this
Sent from my ADR6425LVW using Tapatalk

@rbiter said:
The note's battery is a third bigger too.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
I already mentioned that..

@rbiter said:
Mine was 3 hours too over 12 hours. Not 3.5. This is before i patched my kernel for undervolting. Also my workday is strictly cellular data with many high rises so my cellular is constantly switching radios beause of reception and congestion. I am very very pleased with how well it does. My standby drain is ridiculously good. I get about 1% drain an hour at work and about 1% drain every 2-3 hours at home. I still haven't tested light flow because it is not playing nice with ics yet. I'm sure that will affect my drain. I think people's expectations were/are too high for display time. People that are social nuts and have a live ticker feed on their homescreen so they know when their friends are picking their nose should get the s-lcd version of the nexus. Lcd power drain is a lot more linear compared to amoled screens.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
Your standby drain makes me so jealous. I am in the same camp as many, seeing about 3-4% drain an hour with the screen off. That's also with Juice Defender shutting down wifi and data when the screen is off. This leads to my screen/total stats ending up around 2/12, which is frustratingly bad given the numbers I know this phone should be capable of.
I've tried 3 different ROMs, 2 different kernels, 2 basebands, multiple battery calibrations and charge/discharge cycles, but things never improve. So annoying.

I'm pretty happy with my nexus's performance.
It depends what you're doing, keeping wifi on seems to be a killer, im assuming that's because it's constantly scanning. I get ~5 hours screen time with 25% left at the end of the day.
I take off charge @ 7.30am
Goes back on charge with 20-25% at about 11pm
I use auto brightness
I listen to internet radio during my commute for about 30minutes each way over 3G, read my rss feeds and regularly using gtalk and gmail throughout the day. I rarely make phone calls.

robaldred said:
I'm pretty happy with my nexus's performance.
It depends what you're doing, keeping wifi on seems to be a killer, im assuming that's because it's constantly scanning. I get ~5 hours screen time with 25% left at the end of the day.
I take off charge @ 7.30am
Goes back on charge with 20-25% at about 11pm
I use auto brightness
I listen to internet radio during my commute for about 30minutes each way over 3G, read my rss feeds and regularly using gtalk and gmail throughout the day. I rarely make phone calls.
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Click to collapse
I would be ecstatic with this performance. I would say though that I am lucky to get half of that screen time, with brightness set at about 15%.

robaldred said:
keeping wifi on seems to be a killer, im assuming that's because it's constantly scanning
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Click to collapse
not true, specifically during standby. Keeping wifi on during standby and keeping sleep policy to always on has dramatically saved my battery life. I too was @ 3-4% an hour when wifi was off. Now I keep it on and I average 1% an hour. 3g/4g radio towers use more juice on standby than does wifi. There is countless articles about this on the web.
I get about 3:30 hours of screen time on a full charge. But I think this question is very relative. For example I could get more screen time if I wasn't streaming 30-45 minutes of music and didn't have 1:30-2:00 hours of voice calls.
Sent from my Galaxy Nexus using XDA App

martonikaj said:
Same panel same resolution though. Its pushing relatively the same number of pixels as the Nexus, but with a bigger battery.
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Click to collapse
Pixels aren't necessarily what matter when talking about battery life. It's important, but since both are pushing, generally, the same number of pixels...it comes down to screen size. Screen size makes a much bigger impact on battery life (nonlinearly).

[Q] VZW GN battery drain + heat questions

I'm coming from a thunderbolt with an extended battery. I'm used to crappy battery life, and indeed I lose about a percent an hour playing music on my galaxy nexus with is way better than my thunderbolt.
The issue comes that when I have the screen on I lose about 1-2% a minute, even if I'm just reading an ebook. Calling is fine, DOWNLOADING/STREAMING is fine, but the screen on just kills the battery.
It also gets very, very hot on the upper portion of the screen, but doesn't if I'm downloading something with the screen off.
My question is, is this normal?
As well, the screen has a yellowish tint when looking at it directly, but takes a blue tint at a very slight angle (annoying) is THIS normal?
I want to know how much arguing and yelling I'm going to have to do when I try to exchange this phone.
Writing this took me from 22% to 13% D=

I'm new to Galaxy Nexus phones, but i've been here long enough to know that the yellow tint and blue side view tint is a manufacturer defect.
My battery drain, too, is really bad.
currently, it's 57% of my battery drain, but its been as high as high-60's before.
Facebook comes in 2nd, killing 10%. Almost makes me want to uninstall it.
Today, I noticed it was hot when it was idle in my pocket throughout the day.
It could be bad heat dispersion because of the slim design or cpu usage.
I feel your pain though. My battery went from 100% to 56% in 5H 20M of idle time and 40M of texting / light surfing usage.
Mobile data was off for the 5 hours and 20 minutes, too. >.>

My phone does all that too. Including the upper part getting hot. I would like to know more about this too.

What's your brightness set at?
Sent from my Galaxy Nexus using Tapatalk 2

Mines about 60%

The CPU is in the top right hand corner, mine has hit 60°C before, still fine.
Having your screen on and at a high brightness will absolutely murder your battery and will help raise the temperature.
Screen will always be the highest drain as it is big.
Lower brightness to save battery and delete that damn Facebook app, it stops your phone going into deep sleep which drains your battery.
As for the yellow tint, flash a custom kernel and modify the colours.
My whites are perfect, not a sign of yellow.

My brightness was set to auto, but I predominately work/play in dark rooms, when I wrote the post yesterday over a period of a couple minutes it was in a completely black room.
This is all in relation to the Thunderbolt, though. The screen uses more battery, but I thought AMOLEDs are very efficient (black wallpaper, yay minimalism!). I'm getting about the battery life as my Thunderbolt did with its stock battery, but considering it was the first LTE phone in the US I would think it would be a more inefficient and cumbersome radio chip. It doesn't get nearly as hot as the Galaxy Nexus did, which is why I am so alarmed.
I don't want to have a phone that I can only use the screen for an hour and some change, and while I don't expect to use it solidly for eight hours, I did expect it to last at least as long as the Thunderbolt did. Is there a larger extended battery than the one sold by Verizon that adds very little bulk? I may try investing in one.

afinita said:
My brightness was set to auto, but I predominately work/play in dark rooms, when I wrote the post yesterday over a period of a couple minutes it was in a completely black room.
This is all in relation to the Thunderbolt, though. The screen uses more battery, but I thought AMOLEDs are very efficient (black wallpaper, yay minimalism!). I'm getting about the battery life as my Thunderbolt did with its stock battery, but considering it was the first LTE phone in the US I would think it would be a more inefficient and cumbersome radio chip. It doesn't get nearly as hot as the Galaxy Nexus did, which is why I am so alarmed.
I don't want to have a phone that I can only use the screen for an hour and some change, and while I don't expect to use it solidly for eight hours, I did expect it to last at least as long as the Thunderbolt did. Is there a larger extended battery than the one sold by Verizon that adds very little bulk? I may try investing in one.
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Click to collapse
This. I also had a thunderbolt. I expected this Nexus to out perform it in the battery field but no way. My thunderbolt with stock battery would last from 6am to 6pm which was fine for me. Id just start charging when I got home at 3. This thing when I get home its at like 3% and these past 3 days Iv had the nexus off half the day to save battery while I took AP Tests.
This phone is perfect, except for the battery. As for brightness anything under 60% gives me that yellow tint. Im using the Apex rom right now. I dont see any custom color settings. What rom do you guys use?

afinita said:
I'm coming from a thunderbolt with an extended battery. I'm used to crappy battery life, and indeed I lose about a percent an hour playing music on my galaxy nexus with is way better than my thunderbolt.
The issue comes that when I have the screen on I lose about 1-2% a minute, even if I'm just reading an ebook. Calling is fine, DOWNLOADING/STREAMING is fine, but the screen on just kills the battery.
It also gets very, very hot on the upper portion of the screen, but doesn't if I'm downloading something with the screen off.
My question is, is this normal?
As well, the screen has a yellowish tint when looking at it directly, but takes a blue tint at a very slight angle (annoying) is THIS normal?
I want to know how much arguing and yelling I'm going to have to do when I try to exchange this phone.
Writing this took me from 22% to 13% D=
Click to expand...
Click to collapse
Download from toolbox lite and use it to disable some apps from loading at startup that you know you don't need. This got rid of the issue for me. Installing Franco kernel further helped my battery. I am on stock rom.
Sent from my Galaxy Nexus using Tapatalk 2

GS3 display is dim??

I was checking out the Galaxy S3 at my local AT&T store and noticed the display seemed dim compared to my GS2 but just figured it was the store lighting but after reading this review from Cnet I guess it might have been the GS3..
i would think having to crank up the display brightness to higher levels then need be on a GS2 would cause some considerable battery drain.
What are you guys finding coming from the GS2?

Captpt said:
I was checking out the Galaxy S3 at my local AT&T store and noticed the display seemed dim compared to my GS2 but just figured it was the store lighting but after reading this review from Cnet I guess it might have been the GS3..
i would think having to crank up the display brightness to higher levels then need be on a GS2 would cause some considerable battery drain.
What are you guys finding coming from the GS2?
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Click to collapse
I didn't like the auto-brightness so I just manually do it. Most of the time I leave it at 100% and I have excellent battery life. But you can install a toggle or widget to adjust brightness. Also, there's a battery save option that lowers screen brightness, which might also be coming into play.

You're right it is not as bright. Especially compared to a Vibrant. It is however very usable. Most of the time I have mine turned down to either 50-75%

the-Mike_D said:
You're right it is not as bright. Especially compared to a Vibrant. It is however very usable. Most of the time I have mine turned down to either 50-75%
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Click to collapse
Wow.. If I left my GS2 at 100% or even 75 I wouldn't make it through the day on a full charge.. Not even close.. Kind of worries me now..
I get over 3 hours of display time a day now, what are you guys getting with the GS3 set at 100% and Mike's 50-75%?
Sent from my GSII w/ICS SHOstock2

Screen at 75% 12 hours since charged. 2.5 hours of screen time. 30 minute phone call. 45% battery left.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Since the screen isn't as bright as the GS2, 50-75% is probably what the GS2 did at 30-50%.
I keep mine at around 65% and usually get around 4-5 hours of screen on time per day. The phone easily lasts the whole day with medium usage.
Even at 65% my phone can still be easily seen in sunlight.

Nice.... actually sounds like the GS3 has better battery life then the GS2!!! Even with the display cranked up more then I presently use on my GS2...
Sent from my GSII w/ICS SHOstock2

Is anyone else noticing that the screen flickers when it dims down after the 15/30 seconds? I'm barely noticing this on mine now and its somewhat irritating..
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Maximum brightness eats up my GNex battery. Normal?

After I changed it to minimum setting, my GNex survive from morning until the end of work without charging at all and it's still have 56% battery (normal use: up to 50MB data download, messaging, one or two calls, 9 hours or more screen time).
Is it normal that brightness is the most heavy resource eating the battery?

Um... yes.
Sent from my AOSP Android 4.1.1 Galaxy Nexus

Bro yeah. It does kill more battery.
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If I have helped you.... hit that sexy thanks button. ^_^

Turn the brightness way down.
Sent from my Galaxy Nexus using Tapatalk 2

Obviously it will kill less battery. But 9 hours screentime is pretty crazy..

Celeras said:
Obviously it will kill less battery. But 9 hours screentime is pretty crazy..
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Do you mean good or bad of that "crazy" word?

In a jealous way.
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If I have helped you.... hit that sexy thanks button. ^_^

9 hours and still 50%+ is also a blatant lie unless you have a 812948712mAh battery ducttaped to the phone...

I can get 9 hours of screen time no prob! (if my phone is plugged in the whole time) :cyclops:

Just look at your battery life report after 1 day of usage. Its blatantly clear that the screen is the biggest battery drain on the device.
Also calling BS on 9 hours of screen on time.

Yeah I think he meant... 9 hours overall not screen on time. That would only be possible on 0% brightness on a black screen.
Sent From My Toro+ via Tapatalk

ÜBER™ said:
Yeah I think he meant... 9 hours overall not screen on time. That would only be possible on 0% brightness on a black screen.
Sent From My Toro+ via Tapatalk
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I swear I had it.
Will put the screenshot if I have time later on.

The screen is huge for a phone. It uses battery to light up.
Sent from my Xoom using xda premium

l1k3m1k3 said:
After I changed it to minimum setting, my GNex survive from morning until the end of work without charging at all and it's still have 56% battery (normal use: up to 50MB data download, messaging, one or two calls, 9 hours or more screen time).
Is it normal that brightness is the most heavy resource eating the battery?
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Click to collapse
Dude that's first-day stuff. Brighter the screen = more power being used. Avoid auto brightness too, all that constant adjusting of brightness is no good for your batt either. Just toggle it as needed :thumbup:
Sent from my A100 using xda app-developers app

Or if you have one of those roms where you can slide your finger across to manually adjust the brightness when needed, it helps save a little on battery life. But the days when you could just check the auto brightness box and be all good (ics) are no more now that jb is here. Even with that checked, you still have a screen that's bright as heck and devouring your battery.

lowrider262 said:
Dude that's first-day stuff. Brighter the screen = more power being used. Avoid auto brightness too, all that constant adjusting of brightness is no good for your batt either. Just toggle it as needed :thumbup:
Sent from my A100 using xda app-developers app
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Click to collapse
Auto brightness kills the battery? Ive got to test that
Sent from my Galaxy Nexus using xda premium

ÜBER™ said:
Yeah I think he meant... 9 hours overall not screen on time. That would only be possible on 0% brightness on a black screen.
Sent From My Toro+ via Tapatalk
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Mine is set at that exactly...i have never got that. Most is just about 4.5 hrs with screen on.

mssam said:
But the days when you could just check the auto brightness box and be all good (ics) are no more now that jb is here. Even with that checked, you still have a screen that's bright as heck and devouring your battery.
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Click to collapse
I can't relate to any of that. Auto-brightness is fine, always has been. And there is no difference in screen brightness from ics to jb.

I read almost everywhere that auto brightness is not good for battery but never tested it.

May have to do with the sensor. I've never liked auto brightness, personally. I usually set mine at like 30% during the day and 0% before I go to bed.

What is your preferred brightness level?

Auto is too dim for me so i set it around 79%. Higher brightness hurts my eyes but maybe I just need to get used to it?
Sent from my LG-D851 using XDA Free mobile app

I turned off auto and set the brightness to 100%. I love a bright screen. So far 17 hours on battery, 2 hours screen time, and still at 50%. Good enough for me.

I need better
Sent from my iPhone using Tapatalk

cnotes2019 said:
I need better
Click to expand...
Click to collapse
Turn off the lights.

I keep it always on 100%. Only when I need to save the battery I lower it.

Would love to get more input.

I simply use auto brightness. Bright screens look better but they strain my eyes too much.

I keep it at 50% and thats super bright for me... Keeping it 100 sounds insane
Sent from my LG-D851 using Tapatalk

Apparently I'm in the minority so far. I hate screens that are too bright for the setting they're in. I keep mine at absolute minimum (0%?) unless an increase in ambient light makes it hard to see. Then I increase it as little as possible until it's at similar visibility as it was before the ambient light increase.

i keep mine at 50% also, i could see doing 60% if i really needed it but anything over that would be overkill IMO.

I use auto

auto 100%

I use Lux app. Check the PlayStore and see if it might work for you.

You guys no you can adjust the contrast.
Sent from my: T- Mobile LG G3

80% most of the time. I adjust when/if I need to.

Usually <50% indoors and >70% outdoors. The best way to make it learn what you like is to use LUX app.