[Q] Display is draining battery - Galaxy S II Q&A, Help & Troubleshooting

any of you guys having problem with serious battery draining issue?
sometimes when i check my battery usage, it shows display is eating up most of my battery juice, it can go up as high as 80%!
I've always set my brightness to the dimmest, off auto-brightness, Standard screen mode
I even try to reboot my phone and the display is still draining my battery

Display is not draining your battery. Time up after a reboot/unplug from charger is the base for all those info.
In your case, up time is about 10 minutes. 58% display means your screen was on for about 6 minutes.
Reboot your phone before you sleep, and let the phone sleep. Next day, check how much is Display using. It will be very less.

It's a big screen...
Big screens use a lot of power...
I don't think there's anything to worry about here, got the same stuff going on.

Related

Average screen on times for battery

Hey guys the more i use my note daily it seems I'm hating battery life already. I basically have all features turned off and the screen brightness at its lowest. my battery usage is saying about 2 hours and 45 mins of screen on time till completely dead over an 8 hour period. What's the usual you guys are seeing on this. For only actually using the phone for about 3 hours with no games or special notifications or refreshes. Wifi is off I'm under clocked to 1.1. The battery is atrocious. I know its not made for battery life but being it has a larger battery then any cell and a little smaller then the razr Maxx i expect a little more. Makes me think there is a problem.
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h3r3tic said:
Hey guys the more i use my note daily it seems I'm hating battery life already. I basically have all features turned off and the screen brightness at its lowest. my battery usage is saying about 2 hours and 45 mins of screen on time till completely dead over an 8 hour period. What's the usual you guys are seeing on this. For only actually using the phone for about 3 hours with no games or special notifications or refreshes. Wifi is off I'm under clocked to 1.1. The battery is atrocious. I know its not made for battery life but being it has a larger battery then any cell and a little smaller then the razr Maxx i expect a little more. Makes me think there is a problem.
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A couple of things come to mind:
1) Have you checked CPU spy to make sure you're going into deep sleep? (are you aware of the bug with disconnecting the charger while the phone is sleeping?)
2) Are you in an area with LTE and WiFi most of the day? I know it's opposite of what we're used to, but we've learned that the WiFi radio actually uses far less power than the LTE radio. Just something to think about.
Just some thoughts.
When mine goes into deep sleep I loose 1% per hour (wifi off, data on). I agree you need to get CPU Spy to be sure yours is going to sleep. When the charge wakelock problem occurs I'll loose 3% per hour - that adds up to 1/3 of the total battery during a 12 hour day. The work-around so far is to make sure you wake the phone AND unlock it before unplugging it. Most people only seem to have a problem with non-stock chargers and charging from USB ports.
The single biggest battery user is the screen. I highly recommend using Screen Filter and setting up a Widget set to 75% to use indoors and during cloudy days (then another Widget set to 30% for dark rooms - and turn it completely off for full sun). LED screens use less energy the darker they are, which is why this helps. I go into it in detail here: http://forum.xda-developers.com/showthread.php?t=1544757
Then there is the overnight charging problem (not related to the issue in the first paragraph). Once the phone hits 100% it only trickle charges for a little while. You know when the trickle charge has ended because that's when the "unplug me" nag comes up if your phone is on, or the screen comes back on for a few seconds showing a full battery icon if the phone is off. Once this happens it stops charging - so if your battery was almost full the night before you could hit this stage by 12 or 1 am, then it will start to run down again so the next morning it will appear to discharge fairly rapidly. If your phone is heavily discharged the night before you might not hit this point until 3-4 am (or later if you are using a non-stock charger or USB port), so the battery really will be nearly full the next morning and it won't appear to discharge as fast. The only way to get around the problem is to boot in the morning and then leave it plugged in for 15-30 minutes, or if it is already on, unplug and then re-plug it. Either way it will re-start the charging process and top off properly. The stock charging algorithm is just too conservative IMO. It should cycle the trickle charge mode on and off for up to 8 hours to ensure overnight charges really give you a full battery the next day, and not a battery that is only 96% full. Right now it allows the battery to drain back to 95% before automatically starting the charge process over. So ironically the less you use your phone the day before the less battery you'll have the next day if you don't top it off.
I'm going into deep sleep immediately if i leave my phone off the charger over night prolly 6-8 hours I'll only lose maybe 3 percent at most with wifi on. My standby time is awesome its my on screen time that's the problem. I don't have lte available where i live yet. My phone is always at 98 percent max after charging. I did check out a screen filter before but do i seriously need for my 750 dollar phone to look like sh*t to make it through a day? I jumped from a 4s to here where i got at least 20 standby and 6 plus hours screen time before charging with medium auto brightness full notifications enabled. Granted it is a smaller screen but its also smaller battery with what i would think is more draining data features. I thought led screens were supposed to draw a lot less power? My basic reason for the post is wanting to know what everyone else was concluding from average use of screen time before needing a charge. 3 hours of screen time is like two movies and my phone is dead. What's the point of a big screen cell if i always need to charge it after light use every few hours. Its basically a tv at that point which is always plugged in.
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Which is why I recommended Screen Filter. It doesn't make your screen look like crap, applying a light filter (like the 75% I recommended) just dims it down a little. It works along with the stock auto-brightness feature, too. Using this I get 4 hours of screen time with 15-16 hours total run time. Most people report 3-3 1/2 hours of screen time w/o using Screen Filter. You won't get 6 hours - count the number of pixels on your old phone compared to this one.
With no tweaks other than lowering the brightness I'm averaging right at 4hrs of screen time.
Sent from my Samsung Galaxy Note
i get about 4-3 hours of screen time with my overall screen time ranging from 10-16 hours depending on what else im am doing.
i also have profiles set up to keep my cpu in check while in call or screen off. i keep my phone on 100% brightness ALL the time as well. so if i did choose to dim it i could probably squeeze more life out of it.
Ya I'm at 27 percent right now 13 hours on battery about 2 hours of screen time with screen filter at 64 percent the phone brightness all the way dim. I can't see 4 hours if i tried. I dunno what the hell is wrong. What roms are you guys running? Any refreshes on face book tango scramble with friends etc. i lost about 5 percent over night with everything on. I'm using go launcher and handcent sms mostly occasional Facebook checks and fancy weather widget i use system tuner on demand 192-1.5. with screen off on 192-718 max and call settings. I drop like a percent like every 2 mins it seems when the screen is on. Also I'm on unofficial alpha 2
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[Q]Battery use shows 74% screen

And I don't even view anything in 3D, on leedroid, and music and stuff drains the battery quick
Normal?
People often get confused by battery use percentages... It took me a while too, but maybe this can help...
Say you're sitting at 90% left of your battery... that means 10% was drained. Looking at battery use only refers to that 10%, not the whole 100%.
So... if the screen reads 74% and your battery is sitting at 90%, what it is telling you is 74% OF the 10% used was from the screen.
And no matter what, any phone or tablet's screen is going to use the majority of the battery unless it's e-ink (even then it's a good possibility). I wouldn't stress to much about it. You can reduce this by using autobrightness or lowering the brightness than it is.
If you're frustrated with the battery in general, turn off best wifi performance and turn off always on data.
Also, leedroid has a terrible battery life.

battery information problem

hi guys , i got some problem with the information displayed for my razr maxx. the thing is the battery usage curve won't change for the first 10% of power drain, and the awake bar and screen on bar are full. but when the battery drops to 80% and below, the curve starts to count from the 80% position, what is going on? how can i fix it ?
here is the screenshot
How many times have you already charged that battery from 0% to 100% and drained it back again to 0%?
Seems like a simple calibration issue that should have no effect in real world battery performance.
Had that too. If you want to know more about this, look up "batterystats.bin".
So, if you haven't done what I said in the first line, do it and report back.
i have tried delete the .bin file bwfore, nothing changed. i think i will try to charge it from 0to 100again see if there will be any change. btw will the battery calibration apps solve this?
http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
Read that. You don't have to do anything, just let your razr get some charge cycles and the readouts will be right. Remember: There is no need to tinker with this, as this has no effect except for cosmetic terms.
thanks for the information. one more thing, the battery indicator always shows that the screen on and awake time are the same, even after i turn off the screen and play music for an hour. is this normal? or the system keeps recognizing the status of the screen as on? how should i deal with this?
I would just wait a few days (read: charge cycles) and look again. Indeed strange, but if your battery doesn't get drained this also seems just to be another cosmetic issue.
actually it seems it has been more energy draining than before. it wouldn't drop 1% when i turned on flight mode at night and checked it in the morning. but now even i turn on flight mode it drops about 5% next morning.
roroy23 said:
actually it seems it has been more energy draining than before. it wouldn't drop 1% when i turned on flight mode at night and checked it in the morning. but now even i turn on flight mode it drops about 5% next morning.
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Don't count on the battery percentage today. Look again tomorrow/after some charge cycles.
The battery readouts need to be calibrated to display the correct battery level.
I had the same "issues" (in fact, those don't seem to be real issues) and they went away. I assume your razr will behave the same as mine
Is the phone still new? I know mine was a little wonky until the charging and the meter apparently calibrated themselves to Maxx's battery Ever since, it's been very accurate.
yes it is still new. i got it about half a month ago. just got it charged to 100% from 0%. gonna see what will happen。

Mate 20 Pro Battery Draining Issue

Hi, I found out that my Mate 20 Pro batteey isn't as solid as advertised. The battery keep draining in standby mode. Yesterday, it dropped 9% in 8 hours of standby mode with WiFi on. However, the first few days the battery is very great but after 10 days of usage the battery performance dropped a lot ?. May I know is the AI allocation of power based on my usage pattern or the battery is faulty?
Looks like a rogue app...check the battery usage stats or install AccuBatttery to get full details.
Might have to restart in Safe mode to confirm it's an app.
Standby with Wi-Fi should be below 1%/hr unless some background activity goes nuts on you.
Try restarting the phone, i had the issue at some point, the switch from auto app management to manual, keeping just the apps i want. After the recent update(153) i switched back to auto. There is some issue with the app management, cause sometimes i lose just 1-2% of battery during the night, but sometimes 5-7%. Now i get an avarage of 36h+ of usage, and if not charging at 30-40% i could get more.
From brand new, my mate 20 pro drains about 12-13% if left overnight, also thought that was pretty bad

Battery stuck at 1% for almost 2 hours before shutting off

So mine phone was draining battery fast as expected with a few years old device and battery wear. I took it to a repair shop and had a new battery installed.
Now the phone has been draining just as fast as the old battery which caused me concern as I should have seen some noticeable improvement.
Well it turns out when my phone gets to 5 percent the screen will dim which is the norm. HOWEVER I can move the brightness slider back up and my phone will go to 1% and just stay there.
I am able to play Youtube videos at full brightness while sitting at 1% battery for almost 2 hours straight before the phone finally dies and shuts off.
Is there a special way to recalibrate this battery as im guessing something is waaaaay off with the calibration?
"Stock - non rooted phone"
You just have to recalliberate your battery percentage

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