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Given the recent run of battery posts, i thought i would join in. Yes you read it correctly; 98% after 5 hrs on battery. Thats with an up-time of 8:20, and an awake time of 1:51. During that time i checked and replied to a couple of emails(opened a photo attached) looked at pics in the gallery, and watched a 30 second video w/max volume three times. Also checked the weather several times to update the 5-day forecast.
So whats the secret? Dont open up any of the other screens after you reboot. Or, you can remove whatever you have on there and have only one active screen.
Heres the proof ( sorry about the crappy pic, all i had was my old Hero)
How do you do it can you explain a little better
Sent from my PG86100 using XDA App
Well, I don't have a picture, but my battery is down 2 bars on the screen you are showing...so roughly 80% I guess. I have up time showing 39:17:xx and awake time of 12:51:xx. I've looked at some pictures of my cat several times (had to put him to sleep yesterday due to a degenerative disc disease that finally damaged his spinal cord to where he couldn't walk anymore ) I did a lot of texting, e-mailing, some web surfing, and updating some programs from the market. I also talked on the phone for about an hour.
What did I do for this? Well, the only account sync I have is GMail, all the other crap is turned off. I have the LCD brightness locked at about 20% (auto brightness unchecked), I use WiFi whenever possible since 3G sucks the battery, and the only widget I have running is the HTC Sense weather/clock thing. It is set to update every 4 hours. Otherwise pretty basic stuff.
Uptime and awake time don't mean anything in regards to your claim. That just means, since you last rebooted your phone has been up for 8 hrs 20 min, etc. What you have to show to backup your claim is the time since unplugged...
awenthol said:
Uptime and awake time don't mean anything in regards to your claim. That just means, since you last rebooted your phone has been up for 8 hrs 20 min, etc. What you have to show to backup your claim is the time since unplugged...
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Click to collapse
Well, I don't really have to prove anything to you. We are not in court and I am not on trial. However, I can tell you I wake up every morning at 7:30 and unplug my phone which means, at the very least, the awake time is accurate. I didn't realize up time was only since last reboot. But still, sitting at 8/10 bars at 13 hours. If you don't believe it, then don't.
awenthol said:
Uptime and awake time don't mean anything in regards to your claim. That just means, since you last rebooted your phone has been up for 8 hrs 20 min, etc. What you have to show to backup your claim is the time since unplugged...
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Click to collapse
OK, so its was on battery for 5 hours and I unplugged it at that time. Im not trying to brag, cause frankly the battery was pretty crappy for the first week. I believe the stand-by time on this phone is awesome, Im more concerned about how fast the battery drains once you start using it.
ttieder said:
How do you do it can you explain a little better
Sent from my PG86100 using XDA App
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When you reboot your phone, the only active screen is the home screen. If you long-press the Home button, you will see the other six screens blank. I left the other screens the way they came from the factory and found out that if you even look at them once, they seem to remain active even if they are not being updated.
I was charging my phone before I went to bed, and waking up with 95% (yes I minimized all the background updates). Then I would drive to work with BT on and it would go to 93%. 12 hours later, after two text messages and two voice mails, Im at 70%. Sure my up time was 19 hrs, but my awake time was 40 minutes max. So basically you need to keep everything but the essentials off your screens. This is my experience, as im sure there are people out there on 4G 8 hrs a day who come home with 50%+ on their phone.
Can I put apps on those screens so basically no widgets on any screen but the home
Los Altos said:
When you reboot your phone, the only active screen is the home screen. If you long-press the Home button, you will see the other six screens blank. I left the other screens the way they came from the factory and found out that if you even look at them once, they seem to remain active even if they are not being updated.
I was charging my phone before I went to bed, and waking up with 95% (yes I minimized all the background updates). Then I would drive to work with BT on and it would go to 93%. 12 hours later, after two text messages and two voice mails, Im at 70%. Sure my up time was 19 hrs, but my awake time was 40 minutes max. So basically you need to keep everything but the essentials off your screens. This is my experience, as im sure there are people out there on 4G 8 hrs a day who come home with 50%+ on their phone.
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Sent from my PG86100 using XDA App
You don't have GPS enabled. That's cheating.
3G (or WiFI, 4G enabled) GPS, auto sync, backlighting, widgets, exchange, twitter, facebook, live wallpaper, all the reasons we bought the phone?! Those should be running at all times. (Otherwise, what exactly is the point? Srsly?)
If the battery life is still 3 hours then I am expecting a phone that hasn't and won't be built for 20 years.
VoXHTC said:
You don't have GPS enabled. That's cheating.
3G (or WiFI, 4G enabled) GPS, auto sync, backlighting, widgets, exchange, twitter, facebook, live wallpaper, all the reasons we bought the phone?! Those should be running at all times. (Otherwise, what exactly is the point? Srsly?)
If the battery life is still 3 hours then I am expecting a phone that hasn't and won't be built for 20 years.
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I think we use our phones very differently. I like those features but I don't have them on all the time. I use the GPS when I need to use a GPS. I look at FB or Twitter when I have time to look at them. Live wallpaper, while cute, doesn't do much for me. Exchange and Gmail push is about all I use regularly.
ExploreMN said:
I think we use our phones very differently. I like those features but I don't have them on all the time. I use the GPS when I need to use a GPS. I look at FB or Twitter when I have time to look at them. Live wallpaper, while cute, doesn't do much for me. Exchange and Gmail push is about all I use regularly.
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I get about the same when I'm working a 10-14. That's with checking exchange email, background sync and data on, sending texts on a normal basis, brightness about 30-40%, checking fb, etc etc. Battery doesn't drain much at all for me while it's sleeping which is great when I'm working these shifts and don't care to bring a charger.
Using GPS with location on and Sprint Navigation will drain that beast though, but that's expected.
ExploreMN said:
I think we use our phones very differently. I like those features but I don't have them on all the time. I use the GPS when I need to use a GPS. I look at FB or Twitter when I have time to look at them. Live wallpaper, while cute, doesn't do much for me. Exchange and Gmail push is about all I use regularly.
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Damn your finely worded post. Now I feel the sudden urge to re-evaluate my obsession with live wallpapers so I don't feel like a lame kid that likes something "cute"
[email protected]#$
I had a epic 4g with extended battery 3500 mah and I would constantly use the phone even while at work.. At the end of the day my battery would be at 50%. On my evo 3d I use the phone even more now because its new and my battery would still be 50 % at the end of the day.
Fairly impressed
Doesnt the GPS only draw power if an app is actually using it at the time? So does it matter if you leave it on
Im pretty sure that if you leave your GPS on it will be put into "stand-by" mode, which in effect draws power. I could be wrong tho
Los Altos said:
Heres the proof ( sorry about the crappy pic, all i had was my old Hero)
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Click to collapse
that aint proof at all
use a program like battery status, that'll actually tell us how long its been since it was off the charger
but even from this, shows your phone doing a lot of sleeping
we'd be more impressed with a lot of battery left after actually USING the phone
I shut everything off that im not using. Only time my battery life sucks is when Im at work and get very low signal. That drains the crap out of the battery.
Plus I use Juice Defender, seems to provide some improvement.
After being unplugged and having used it as I described, after 20 hours I still had 68% of my battery charge. I don't have juice defender, but I made the adjustments I mentioned and the one I forgot to mention is I also turned off location services.
So far I am pretty happy with the battery life, but I also remember with the Epic I had amazing battery life for a month or so and then it was more like what is "average" for that phone. I'm no scientist, but I would guess that brand new lithium batteries do a little better and then when the chemicals start breaking down you lose that "little extra."
Sorry, I guess I should have included two pics. I do have battery status and it showed 5:05 since off the charger. I chose to post the other pic since I thought it meant more in terms of use. Sure it doesn't tell you how I was using it, just that it want sleeping for half of that time. Im not trying to impress anyone, i just thought it was a huge improvement from the past week where 5 hours off charger showed 70% battery left with only 40 minutes of up time (which resulted form a couple of VM and texts). So my point was along the lines of; more use, but huge improvement in battery consumption.
SayWhat10 said:
that aint proof at all
use a program like battery status, that'll actually tell us how long its been since it was off the charger
but even from this, shows your phone doing a lot of sleeping
we'd be more impressed with a lot of battery left after actually USING the phone
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Click to collapse
ExploreMN said:
After being unplugged and having used it as I described, after 20 hours I still had 68% of my battery charge. I don't have juice defender, but I made the adjustments I mentioned and the one I forgot to mention is I also turned off location services.
So far I am pretty happy with the battery life, but I also remember with the Epic I had amazing battery life for a month or so and then it was more like what is "average" for that phone. I'm no scientist, but I would guess that brand new lithium batteries do a little better and then when the chemicals start breaking down you lose that "little extra."
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20hours, and almost 70% left?
i say super BS
because you know at that rate you can go almost 3 days with no charge right?
i know the evo 3d battery has bout 150 more mah then the 4G, but c'mon son
Hi all,
I'm coming back to Android from WP7, and while WP7 is nice, it couldn't do all of what I wanted it to do. I picked up my Photon and was playing with it today, and could barely get around 7 hours of battery on it today before it died. Turns out my sync settings were -way- overkill and I played with it. Now, I've let it charged and have had it sitting screen off with maybe 5 texts and installing the apk for the screenshot app. Otherwise, screen's been off just sitting there. Does my awake time seem really long? If so, how on earth do I get it down? A lot of my syncs are turned down and I run very few updater widgets.
Appreciate any advice here!
Have you tired changing the battery mode in the Battery and data manager?
schale01 said:
Have you tired changing the battery mode in the Battery and data manager?
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Click to collapse
Yeah, I set it to max power savings.
Sorry for the double post. I managed to tweak it a bit and got some better life out of it, but it still seems as if my awake time is way too high. Is the time at the bottom of the graph awake time or just the last time the graph updated?
I was in a 4G city today and used it barely, to get internet instead of fighting 3G (was at Heinz Field, lots of people so it took a while to connect). I also took a few pictures/sent some texts and a bit of Facebook, nothing too extensive. 4G was on for a total of maybe 5-10 minutes. This battery life isn't bad, but I feel like it could be much better if I can smack the awake time down. Also - what does the cellular bar mean? How do I interpret that?
Would appreciate any advice. I'm running the leaked maintenance release but it was like this even before so I don't believe this is the issue. I assume I'm going to have to reset it, but I figured I should ask before doing so... I'm not running any high-updated widgets/apps and I tuned everything down in Android settings so I have no idea what's wrong.
Hi all,
I love the Sony Tablet except its battery life. for something that is so huge compared to the others similar products out there, I am sure that they could have squeezed a bigger battery into the unit.
The power capacity is pretty weak. Let's hope that Sony offers a higher capacity battery size. I would gladly pay to upgrade it.
That's weird, my battery life is fantastic. If I play games on it all day it'll last 8-12 hours, but if I just use it intermittently and moderately it'll easily last me a couple of days. On standby it only uses a couple percent a day if that!
I'm the same as unclespoon. Even during heavy use, I get about 9 hours, which is way better than my old Galaxy Tab could ever muster. Standby usage is crazy low, its fantastic!
Not sure what you mean either about being larger than most other devices. The Tablet's 9.4" screen is smaller than almost any other full-size Tab out there (including the iPad) and since the back curves, theres not actually a lot of usable rear space (look at how thin its getting at the thin end, now imagine trying to fit a battery in there!)
I'm not sure you'll find a Tab out there currently with a better combo of size/battery life. The chunkier Toshiba Thrive will last longer, the thinner Galaxy Tab's will last even less, and my Tablet S always outlasts my iPad, so it might just be your device. Try checking Settings -> About -> Battery Use
I'm of the same opinion as the op. My tablet s has dreadful battery life and especially when it isn't doing anything. (50% usage is system standby) my old galaxy 7 was far far better (charged about once a week)
I believe this may just be because it is new (only have 1 full charge) as my galaxy s2 was initially unimpressive and then lasted 3 days of moderate use without charge. Hoping the same will happen to my s1.
Time will tell
My only guess was that you did a shoddy job of conditioning the battery. My old Galaxy Tab (the first 7" one) was hopeless, but when I replaced it, I conditioned the battery better and it was a bit better.
My Tablet S lasts for days and days and the standby usage is tiny. Check whats using your battery in the Battery Use screen and get back to us, we might be able to help..
I noticed advanced wifi lock was causing massive amounts of wakelocks (8 hours out of 10 according to the stats in settings/about).
betterbatterystats is not available via market but I am trying out the XDA APK now
wintermute000 said:
I noticed advanced wifi lock was causing massive amounts of wakelocks (8 hours out of 10 according to the stats in settings/about).
betterbatterystats is not available via market but I am trying out the XDA APK now
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Click to collapse
I noticed that as well. If you have Advanced WiFi lock activated the tablet won't go into deep sleep mode, there of massive battery usage. I still have Advanced WiFi lock on my tablet, but only activate it when I need to download/update something that takes time. Otherwise I turn it off. It's not worth the battry drain.
Wow. Your battery life are fantastic. 9 hours? That's huge. I have not used my Sony Tablet till flat but given the rate of battery loss think maybe the most is about 5 hours which is similar to what many reviewers are saying.
Just can't imagine that those reviewers are so far out of the ball park compared to you guys. I am using juice defender Beta. Not to sure if its helping or not. But at least if I not using WiFi it shuts it off automatically.
My battery used to drain badly during standby. I found that the Friend Stream service was preventing the tab from sleeping. Killed the service a while ago and battery has been fantastic since. Pushed it to 3 days with light use. About 3 hrs of browsing and facebook. My battery level is at 68%, been off power for 20h40 mins, and used for about 4hrs today - facebooking, Internet browsing. Note that no specific conditioning was performed.
What are the settings that you have on your Tablet? Auto brightness, background sync turned off ?
how did you stop friendstream, and what the heck is it, did you just kill the process and it stayed dead? (sometimes as u know u kill process but it will come back).
Good question. What is the Android software revision now. My is Android 3.2.1 (revision 2)
I acutally just uninstalled the crap-app. nothing I use anyway. It is an app for facebook, twitter and other social networks. So just get rid of it. Uninstall and be happy
my bad. I confused the HTC name and Sony name.
Social Feed Reader was misbehaving. Once started it kept running... rather than dropping off to sleep (and into Cached Apps).
Something wasn't right so I force stopped it and it stayed dead.
An additional note - the Setup, Applications, Running Applications feature isn't 100%. Some background apps aren't displaying as running or Cached. Go figure.
So any special method to stop the social feed reader?
I'm getting those kinds of numbers on mostly auto brightness (and sometimes lower, at night), with background sync turned on, WiFi sleep policy set to default, and no battery monitoring or saving apps running. The only thing I did was single initial conditioning cycle and since then its been great.
Also note that software-decoded video files will take a lot more of your battery than the equivalent properly encoded file. I havent had any trouble with Social Feed Reader, but I never even set it up and judging by the many stories around here, I would uninstall it if you're worried about battery..
asayanna said:
My battery used to drain badly during standby. I found that the Friend Stream service was preventing the tab from sleeping. Killed the service a while ago and battery has been fantastic since. Pushed it to 3 days with light use. About 3 hrs of browsing and facebook. My battery level is at 68%, been off power for 20h40 mins, and used for about 4hrs today - facebooking, Internet browsing. Note that no specific conditioning was performed.
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Click to collapse
good to know, thanks for sharing.
agc93 said:
I'm getting those kinds of numbers on mostly auto brightness (and sometimes lower, at night), with background sync turned on, WiFi sleep policy set to default, and no battery monitoring or saving apps running. The only thing I did was single initial conditioning cycle and since then its been great.
Also note that software-decoded video files will take a lot more of your battery than the equivalent properly encoded file. I havent had any trouble with Social Feed Reader, but I never even set it up and judging by the many stories around here, I would uninstall it if you're worried about battery..
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Hi, that's good to know. Thanks for sharing. Unfortunately think I screwed up the initial conditioning. so I guess I will have to live with the 5 hour battery of my Tablet.
Btw how do you do battery conditioning?
cow138 said:
So any special method to stop the social feed reader?
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In Setup, Applications, Running Services have a look at the awake time (listed on the right side) of the running processes. You'll note that system processes (the ones with the Android icon) have been awake since last boot.... but you might finds others that are as well. I noted Social Feed Reader showing high awake time and decided to nuke it. Simply click the offending app. You'll be given the option to stop the app... which is what I did. It's an app so doesn't restart once killed. Hope that helps...
Final thought: at the top right of the screen there's a 'Show cached processes' option.
The could be an offending app in there. Kill any installed app you suspect might be a problem and see if that helps.
my battery life is excellent.
Sent from my GT-I9100 using xda premium
First of all, let me say thanks to Scott for all of his work on CleanRom. I know there has been a lot of discussion lately in his thread about battery usage. Some people are getting outstanding battery life and some people can't make it more than a few hours. I have been one of the people that can't make it more than a few hours no matter what I do. I did a clean wipe of everything before installing the ROM and have even tried to reinstall. The odd thing is my wife's phone does fantastic with this ROM. I finally decided to test things side by side lastnight. My phone should have had the clear advantage because I turned off all syncing options and froze any apps that had been downloaded just to make sure there was nothing running. Meanwhile, her phone syncs like crazy to facebook, email, etc and also has various apps running like weatherbug. I let them both sit overnight and after ~9hrs here are the stats I measured:
Battery % left : 79% (mine) vs 88% (hers)
Data used overnight: 75kb (mine) vs 744kb (hers)
Time awake: 3min 32sec (mine) vs 9 min 42sec (hers)
Time in Deep Sleep: 9hr 19mins (mine) vs 9hr 6min (hers)
Everything points to the fact that I should easily have more life left than hers. I am also attaching a couple of screenshots and the betterbatterystats files to this post. Maybe we can track down why everyone's battery life is so different. Tonight I plan to swap batterys between the phones to try to determine if my battery is the problem.
wow that's pretty good on your wife's phone but horrible for yours especially considering you turned off syncing.
I agree. I have no doubt that her phone could easily still be at 95% or more if I made all of the same adjustments to hers as I did to mine. That is why I am hoping someone on here with more knowledge about this stuff can help to determine what is going on.
It honestly might just be a faulty battery, I was having similar results with mine and my friend's phone, too. I tried multiple ROMs, Kernels, etc. But it slowly got worse and worse to the point that I would go down from 100% to 60% in little over an hour, doing nothing but listening to music with the screen off and auto-sync etc off. I bought a replacement battery, though. And this one is working just fine. You might just be having bad battery luck, or it might be your device, I know some people have returned their Rezounds because of battery life/heat problems, and the replacement generally fixes their woes.
so what did your betterybattery stats report?
Thanks for running this test. It would be very helpful to everyone if you could pinpoint this to a battery difference and I'm waiting to hear your results after the battery swap.
What helped my battery life most was to uncheck the box under "settings -> applications -> start automatically" It has something to do with a task manager. It probably wouldn't explain why your wife's phone does better but it could help both of you get better battery life.
bik- The betterbatterystats file is attached. I see a lot of activity on her phone but very little for mine. The only thing that stands out to me is I have alarmmanager waking my phone for 10 mins and she had it waking hers for only 5 mins. I am not sure exactly what alarmmanager is though.
HTGaming- Thank you for the suggestion but I have already done that as well. I think I have literally turned off everything possible on this phone because it is driving me nuts to burn through battery like this. My OG droid used to us 30% in a day max and now I burn through that in an hour if I am using the phone for anything at all. Pretty much the only thing I had running on the phone lastnight was 4g service which her phone also had.
Another thing you can do to compare the two phones is to install battery monitor widget to see what the drain is on the phones. I used to have decent battery life but ever since the update, it's been worse. The one thing I noticed is that now my phone draws more current when sleeping than it used to. The drain is consistently close to 300ma, whereas before it would be less than 200ma when sleeping.
You have to have the widget on for the monitoring to be active unless you change the preferences.
I swapped the battery's lastnight and here's the results. Hers is still clearly better than mine even though betterbatterystats shows way more activity on her phone again.
Battery % left : 84% (mine) vs 90% (hers)
Data used overnight: 279kb (mine) vs 498kb (hers)
Time awake: 5min 32sec (mine) vs 12 min 8sec (hers)
Time in Deep Sleep: 7hr 58mins (mine) vs 7hr 59min (hers)
Someone posted that they saw different PRIs on phones even after the OTA. Do your two phones have the same PRIs?
damnn thats just weird
Im starting to think that some Rezound batches are differently tweaked than others. My first Rezound had great battery, I would stream music for 5-6 hours on 4G and would still be above 60%. My last two however were completely horrible, on 4-5 hours standby it losses closed to 20% with lil to no use. Same settings/apps as my first Rez. I regret returning my first Rezound, it truly was the perfect phone.
There really has to be a reason why some come with a 3.8 V bat. opposed to a 3.7 V. HTC wouldn't just send out two different types of battery for no reason.
You are missing 1 key info in your analysis, which people always seem to leave out when talking about battery life. The screen on time. I see in in the graphs but it's hard to tell the exact number. Because of the 720p screen on our phones, that makes a big difference. When my screen is on, the phone uses up at least 600 ma/hr. That is conservative, usually it is more like 700-800. We'll assume 600 for now. That's 10 ma/minute. Based on the stock battery, that is 0.6% per minute. So having a difference in screen on time of 10 minutes will give you 6% difference in battery life.
i am also unable to go for even most of a day on one battery charge - and i have 3 extra batteries that were from ebay that dont work even that long...
i do notice it when the screen is on the most - yest i used the gps for an hour and a hlaf without plugging the phone in and my battery lasted about 3 hours after that and died....
very bad....
very interested to see if its the phone or not - great work...
I'll try to answer a couple of questions in here. I got very frustrated yesterday so I flashed an ICS rom to see how my phone did with it. It is equally as bad. This morning, I got into work with 97% life, checked my email for about 2 mins and was already down to 90%. I have the screen display set to 30% brightness too. I am amazed that people can used 2-3 hours of display and still have 70% battery after 10 hours. My screen at 30% brightness probably drains 2% per minute. I think tonight I am going to try to install one of the stock RUU's just to check and see if the OTA upgrade possibly didn't install itself correctly.
HTGaming - I will check the PRI's tonight.
Bluesnake - Both phones were purchased the same day so I would guess they are from similar if not the same batch. Both have 3.7 batteries. Infact when I first got my phone, I could have display on auto, sync everything every half hour, use the screen for random browsing throughout the day and still go home with over 70% left. Somewhere along the line my phone has developed some sort of draining problem though and no amounts of clean installs seem to fix it.
b5fan - Both phones were off the entire night. I think screen usage was maybe 10 seconds for both of them. They literally just sat there on the nightstand while we slept and mine drained 2x faster with nothing running while hers ran facebook, email etc.
I checked the PRI on both phones and they are the same. I re-ran the stock RUU tonight so I will see if that makes any difference. I highly doubt it will but I am running out of ideas.
I guess I was thrown by the screen shots. They both show some noticeable screen time.
the only other thing I could think to check is the email type, push versus pull, and the frequency.
Sent from my ADR6425LVW using Tapatalk
b5fan said:
I guess I was thrown by the screen shots. They both show some noticeable screen time.
the only other thing I could think to check is the email type, push versus pull, and the frequency.
Sent from my ADR6425LVW using Tapatalk
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Click to collapse
The screen time was probably just from me getting all of the data off in the morning like the screenshots and battery stats. Her email was on push and my email was set to not sync at all. Basically she had a fully functional phone and mine was set to do nothing which is why the battery drain is so hard to explain.
I did run the stock RUU image lastnight for my phone. I put it in airplane mode overnight and it was at 97% when I got up which is a huge improvement. I took it off airplane mode at 6am today and when I got to work at 7am, it was down to 90% so I guess I am in wait and see mode now. I have no email accounts/facebook accounts/ or anything else setup right now. It is only the stock image so there should be nothing draining battery today.
I can confirm the phone is no better now after the clean RUU install. Let it sit overnight and it was down to 80% this morning. I did not even setup any email accounts or download any apps yet. This is just the stock image from verizon.
Hi everyone
So I recently got a S2, upgraded it from stock Gingerbread to stock ICS via Kies, then flashed CM9. CM9 was great, but I quickly noticed worse battery drain than that of GB. I sorted out all wakelocks, now facebook is the top one in better battery stats list and it's only 10mins in a day so I don't think that's a problem. When charging, vbus_present shows up and keeps the phone from sleeping, but that's a normal thing when the phone is plugged, right? CPUspy shows the phone is in deep sleep the majority of time I don't use it, so I assume I have no wakelock problem.
But even then, the battery still seems a bit bad. When in deep sleep with wifi and mobile data off, it would lose around 1.5% per hour; and with moderate/high use (internet with wifi or gaming), I'd be lucky to have it last 3 hours. Charging to 100% from zero takes about 3 hours.
I also tried recalibrating the battery through BC, but haven't noticed too much of a difference.
Recently I found a guide on disabling fast dormancy via the build.prop file. Still waiting for results though.
So, my questions
1, My battery usage seems normal, doesn't it? 1.5% per deep sleep hour is acceptable I guess, but 3 hours of usage seems a bit short. Too short.
2, What effects does fast dormancy have?
1) Totally unacceptable. Mine lasts at least 7-8 hours with high use..
Does your phone heat up while the heavy use ???
What brightness level do you use for the display ???
How many apps do you have that can gain internet access ???
2) By default, the Samsung Galaxy S II has Fast Dormancy support enabled. One of the goals of Fast Dormancy is to increase the battery life of a device, by limiting the amount of signaling between the phone and the cell network. But, when Fast Dormancy it is not enabled in the network and is enabled on the phone it ironically works the other way around, and actually drains more battery than before.
Luckily, Fast Dormancy can be disabled on the phone. For the Galaxy S II, do the following:
Dial *#9900#
Press “Disable Fast Dormancy“
Press “Exit“.
Easy as that!
Thanks for the suggestion I have brightness manual and at around 20%. Wifi is disabled when not used, and mobile data is always turned off unless I need it, so basically apps only get internet access when I want them to. I have also disabled sync for both google and facebook, but fb still pushes notifications to me while it's connected. Is that a major battery drain, and if yes, how to disable it?
Anyways, facebook, instagram, youtube are the only apps than can access the internet. No messengers or anything that may keep a wakelock.
My phone doesn't heat up during normal use, maybe a bit when I do some gaming (Max Payne?)
Also, *#9900# doesn't do anything on my phone. It doesn't bring up a menu or anything like that.
Bump. Guys?
Delivered using Nyan Cat's rainbow powers.
Install BetterBatteryStats (search for it on here/Google Play), might help you nail what's causing the drain.
Yes I did, as said in my original post. After a night the highest wakelock are just around 10 minutes, and that one was facebook. Uninstalling it however had no effect.
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Thinking logically, there's got to be something else in those stats (partial wakelocks in particular) that's causing that drain. There's no way having fast dormancy enabled/disabled is either going to cause/fix the drain you've mentioned getting '3 hours of usage'; (I can get 5 & a bit hours screen on with CM9 & variable usage/mostly 'moderate' use) given everything else you say you've tried.
Post BBS logs here if you want someone to have a look.
Edit to add - Also post a screenshot of the 2nd screen in settings/battery, the one that has history 'details' at the top, with the 'mobile network signal' bar underneath the main battery graph.
Here you go: pastebin.com/1UwicChJ
I just registered half a day ago and don't have enough posts yet to paste links, so sorry the phone was only on battery for nearly 2 hours with some light browsing and facebook, but I hope it works.
Anyway, I looked through my running processes, and dsp manager is the only non-OS process running, besides facebook. I got CM9 so it came by default. Could dspmanager be the culprit?
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It's a new phone he's got there and I doubt it could be anything battery related itself.
I'm using CM9 nightlies and I get around 9 hours moderate use. It has been said though that a lot of these CM9 builds have battery drain and heat issues.
I use Juicedefender to help with the battery life which seems to work.
Sent from my GT-I9100 using Tapatalk 2
MistahBungle said:
Edit to add - Also post a screenshot of the 2nd screen in settings/battery, the one that has history 'details' at the top, with the 'mobile network signal' bar underneath the main battery graph.
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About 1/3 of this time was on wifi browsing. The drop is much more drastic if I play games.
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A couple of observations. There's nothing that stands right out in the BBS log. The other one is, looking at that graph you've lost ~15% over a bit under 2 hrs. The screen has been on most of the time the phone has been awake (confirmed by the BBS log) if you look at the respective bars. You've also been using WiFi for most of the time the screen has been on/phone has been awake.
Roughly speaking, going by the screenshot, you'd get ~5hrs+/- screen on time if you kept using the phone in the same way you had during that just under 2 hrs, and this is pretty much normal. I haven't had drain issues for ages, so I double checked my details on the 2nd screen of settings/battery to make sure CM9 is reporting these details accurately (screenshot attached). Certainly in my case, this screenshot reflects what my phone had been doing for the just under 5 hrs it had been off charge/since last reboot; that is, >90% of the time in idle/deep sleep. So it probably isn't CM9 reporting these details inaccurately in your case either.
The BBS log & screenshot don't illustrate the problem you talked about in your OP. Now, if I had to take a stab in the dark at what's causing problems when you do have them (and FWIW, I do believe you're having the problems you mentioned in your OP at times), in the absence of any other info, maybe your WiFi router is constantly sending the phone packets (what's been referred to as a 'dirty router' on here before) when you're connected to WiFi & not actually using it. This scenario has been known to cause relatively high levels of drain.
So to be honest with you, based on that screenshot & the BBS log, I'm not really seeing a problem.
Now, if you want to post the same again when you actually have a problem with drain similar to what you described in your OP, happy to have a look at them. But for that ~2hrs covered by the BBS log & screenshot you posted, that's pretty much normal.
MistahBungle said:
A couple of observations. There's nothing that stands right out in the BBS log. The other one is, looking at that graph you've lost ~15% over a bit under 2 hrs. The screen has been on most of the time the phone has been awake (confirmed by the BBS log) if you look at the respective bars. You've also been using WiFi for most of the time the screen has been on/phone has been awake.
Roughly speaking, going by the screenshot, you'd get ~5hrs+/- screen on time if you kept using the phone in the same way you had during that just under 2 hrs, and this is pretty much normal. I haven't had drain issues for ages, so I double checked my details on the 2nd screen of settings/battery to make sure CM9 is reporting these details accurately (screenshot attached). Certainly in my case, this screenshot reflects what my phone had been doing for the just under 5 hrs it had been off charge/since last reboot; that is, >90% of the time in idle/deep sleep. So it probably isn't CM9 reporting these details inaccurately in your case either.
The BBS log & screenshot don't illustrate the problem you talked about in your OP. Now, if I had to take a stab in the dark at what's causing problems when you do have them (and FWIW, I do believe you're having the problems you mentioned in your OP at times), in the absence of any other info, maybe your WiFi router is constantly sending the phone packets (what's been referred to as a 'dirty router' on here before) when you're connected to WiFi & not actually using it. This scenario has been known to cause relatively high levels of drain.
So to be honest with you, based on that screenshot & the BBS log, I'm not really seeing a problem.
Now, if you want to post the same again when you actually have a problem with drain similar to what you described in your OP, happy to have a look at them. But for that ~2hrs covered by the BBS log & screenshot you posted, that's pretty much normal.
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Okay, much appreciated so I guess I'll take it from your reply that 5 hours with wifi browsing isn't too bad. Seems okay, but I still find it a bit strange that (in my case) wifi browsing uses just as much battery as games do. I always thought it was a light activity!
Or maybe it wasn't the battery that had a problem, but that I set my expectations a bit too high. I came to this S2 from a BlackBerry 9700, whose battery would last half a week with very frequent use. But anyway, I just got this phone for a week, so I consider myself a pretty heavy user. Probably when I get familiar with it, I won't feel the need to play with it every five minutes and battery will last a bit longer then! xD
Nah. Anything with screen on is far from 'light activity'. Screen consumes far & away the most juice. In saying that, I've seen some people on here say they can get 8-9 hrs screen on with 2000mAh battery. How they do it I have absolutely no idea.
But if yeah, 5 hrs with the screen on most of the time whether browsing or playing games (games in particular are very CPU/GPU intensive & thus use a lot of zzzzs; unless they're really basic games like chess or similar), or anything else isn't too bad. Can you do better ? Obviously, if people say they can get 8-9 hrs. But it's not a matter of doing A, B & C and you'll magically end up with massive screen on times. Every phone is setup & used differently, and getting the absolute max out of every charge takes a lot of trial & error and experimenting with settings/setup.
There are tons of threads about the subject on here if you feel like going down that path. For me, I'm happy with the battery life I get these days because you can really obsess over it & spend a lot of time stressing over it/trying to maximise it for often very little gain. I'd rather simply use my phone a lot during the day & charge it at night.
Yeah Crackberries are like Japanese cars, they can run on fumes pretty much ;-) Having a dual core processor, a decent GPU & a huge screen kinda changes things.
There is one thing you can do fairly easily tho. And that's to make sure the phone spends as much time as possible in deep sleep when you're not using it. That will ensure that you have enough juice to get you by when you do want to use it. Simple ways to help achieve that is to turn off data/WiFi completely when you're not using it (tho many people don't like to do this for different reasons; which is perfectly OK if you're happy to live with the resultant drain), and make sure you've got no apps that are doing things they shouldn't be doing (like syncing, for example) while the phone should be sleeping. Again, there are lots of threads about same if you ever feel like a bit of light reading ;-)
So yeah, if you do find you experience drain that's not normal/outside the usual pattern you have, definitely post details & people can have a look for you. And as you said, you'll get to know what really is normal with regard to drain & so on is as you use the phone more (I tended to use it constantly for that first couple of weeks as well).
nyancatland said:
Okay, much appreciated so I guess I'll take it from your reply that 5 hours with wifi browsing isn't too bad. Seems okay, but I still find it a bit strange that (in my case) wifi browsing uses just as much battery as games do. I always thought it was a light activity!
Or maybe it wasn't the battery that had a problem, but that I set my expectations a bit too high. I came to this S2 from a BlackBerry 9700, whose battery would last half a week with very frequent use. But anyway, I just got this phone for a week, so I consider myself a pretty heavy user. Probably when I get familiar with it, I won't feel the need to play with it every five minutes and battery will last a bit longer then! xD
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Already took such measures. Wakelocks killed my battery over my first night with the phone, and I woke up after 7 hours to find a ~50% battery completely empty. Now things are alright, I clear CPUSpy stats before I sleep and wake up to around 95% of deep sleep time. Overnight drain varies between 5 and 10%.
And yes, yes you are right. Maybe I should stop going nuts. I'm checking BBS and CPUSpy every hour, reading every XDA thread on battery, and calculating my battery drainage every morning I wake up :laugh::laugh::laugh:
Re: dirty/'noisy' WiFi networks, have a look at this post as an example of what I was talking about above.
MistahBungle said:
Re: dirty/'noisy' WiFi networks, have a look at this post as an example of what I was talking about above.
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Umm...so I just woke up, and noticed a wakelock in the kernel category. It was PowerManagerService, and it occupied around half an hour. Overnight, aftet I've slept 10 hours (got a day off ), my battery came from 24% down to 13%. That's a rate of roughly 1% per hour. Is that normal? And also, what is that PowetManagerService wakelock?
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Fantastic. Looks like you got your 10 posts That tip is about as useful as "don't plant cauliflowers in concrete".
trojans63 said:
Turn off wifi and dont play games and your batter will last longer
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