Develop Bugs

(Question)(need helpp)

I'm using the setcpu app and whenever I apply a "when screen off" profile and put my phone to sleep it won't turn back on. I set it to 200-400mhz and it doesn't turn back on and I think the govenor is conservative.
I am running randomrom pheonix with genocide 2.0 kernel.
Can anyone tell me what they have their profile set as or what is a good low value I can set my phone to so that it still runs but doesn't waste too much battery life while its off. Any kind of help is appreciated.
Sent from my SPH-D700 using XDA App

Don't use profiles
I wish I could be of more assistance, but basically, I remember many of the more experienced forum members here suggesting that you do *not* use profiles with SetCPU on the Epic 4G.
I am running the Genocide 2.0 kernel on my Epic with SetCPU set to a max of 1120 and min of 100 MHz, with no profiles set and the governor set to conservative. Haven't had any issues.
Also, I use a widget called Temp+CPU PRO that dynamically shows you the clock speed of the CPU, so you can tell when it's at 100 MHz and so forth.
From what I've seen, the speed of the CPU ramps down to 100 MHz on its own when the phone is idle.

Oh.. well I have never seen that.. I heard ppl talking about setcpu is better than voltage control so I thought it was cuz of the profiles.
So about how many hours do u get out of ur phone? What rom r u using with that kernel?
Sent from my SPH-D700 using XDA App

lilajrestnom said:
Oh.. well I have never seen that.. I heard ppl talking about setcpu is better than voltage control so I thought it was cuz of the profiles.
So about how many hours do u get out of ur phone? What rom r u using with that kernel?
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
I get an average of about 11 hours on a single charge. Mainly because I'm a Facebook addict
Right now, I'm using the ERA ReVolted Rom v.6 Reduced Fat version.

GRK4G63 said:
I get an average of about 11 hours on a single charge. Mainly because I'm a Facebook addict
Right now, I'm using the ERA ReVolted Rom v.6 Reduced Fat version.
Click to expand...
Click to collapse
Lol well I use internet a lot for downloading stuff and I txt all day long get a few phone calls and I average a couple hours.. yesterday I played a game and downloaded some music talked a lil and txt the whole time and it lasted from 10 30am until like 1pm and I had 8%. I don't understand how ppl can say they get over 20 hours.
Sometimes I can make it last 12 hours but that's when I just txt and don't do nothing else.
Sent from my SPH-D700 using XDA App

lilajrestnom said:
Lol well I use internet a lot for downloading stuff and I txt all day long get a few phone calls and I average a couple hours.. yesterday I played a game and downloaded some music talked a lil and txt the whole time and it lasted from 10 30am until like 1pm and I had 8%. I don't understand how ppl can say they get over 20 hours.
Sometimes I can make it last 12 hours but that's when I just txt and don't do nothing else.
Sent from my SPH-D700 using XDA App
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Click to collapse
There are a lot of good posts on here about maximizing your battery life. Most of it requires some functionality to be sacrificed, so it's all about your personal preferences.
Our AMOLED screens are purty, so even though I keep mine dim to save battery, once in a while, say when watching a movie on the phone, I'll crank up the brightness all the way to make the visuals pop. Do a few searches, read up, and then tweak, tweak, and tweak some more until you find that "sweet spot" that works for you.
Of course, hooking yourself up with one of those monster 3500 mAh batteries wouldn't hurt, either. Just sayin'

GRK4G63 said:
There are a lot of good posts on here about maximizing your battery life. Most of it requires some functionality to be sacrificed, so it's all about your personal preferences.
Our AMOLED screens are purty, so even though I keep mine dim to save battery, once in a while, say when watching a movie on the phone, I'll crank up the brightness all the way to make the visuals pop. Do a few searches, read up, and then tweak, tweak, and tweak some more until you find that "sweet spot" that works for you.
Of course, hooking yourself up with one of those monster 3500 mAh batteries wouldn't hurt, either. Just sayin'
Click to expand...
Click to collapse
Sent from my SPH-D700 using XDA App
I know I read a lot and I do like everything they say but don't get the same result as they say and I use screen filter so my brightness is alwas reallly low
And idk how to use tweaks really well I found this battery tweak thing and I believe all it really does it change the mhz the phone runs on but I could b wrong
And I used supercharge v6but idk if it works I don't notice any changes.
So now I just changed to eh17 modem and removed all apps I don't use and only have a few. I froze the thingsi know waste battery and I don't have nothing thatuses the battery I think.. so is there any tweaks u know r good?

Make sure you freeze sns and drm services with a bloat freezer of mybackuppro's toolbox tht saves me like a couple percents of battery an hour. Also I have tried setcpu, voltage control, pimp my cpu, but my favorite overall is tegrak
Sent from my SPH-D700 using xda premium

xopher.hunter said:
Make sure you freeze sns and drm services with a bloat freezer of mybackuppro's toolbox tht saves me like a couple percents of battery an hour. Also I have tried setcpu, voltage control, pimp my cpu, but my favorite overall is tegrak
Sent from my SPH-D700 using xda premium
Click to expand...
Click to collapse
I have titanium backup pro and I froze the sns, system updates, drm content, and even the google maps app and I only defrost that app when I use it.
I have set cpu set on 200-1120 mhz. And I have juice defender and its set to "extreme". I don't keep any date connection on when I'm not using it. I'm not sure what else there is to do but I'm sure I've done some more things...
Sent from my SPH-D700 using XDA App

lilajrestnom said:
I have titanium backup pro and I froze the sns, system updates, drm content, and even the google maps app and I only defrost that app when I use it.
I have set cpu set on 200-1120 mhz. And I have juice defender and its set to "extreme". I don't keep any date connection on when I'm not using it. I'm not sure what else there is to do but I'm sure I've done some more things...
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Buy an extended battery

LunaticWolf said:
Buy an extended battery
Click to expand...
Click to collapse
Sent from my SPH-D700 using XDA App
Don't they cost like $70???

I wouldn't use the screen off profiles. You only would need them if your trying to have your phone never go into deep sleep for some reason. Not to say the settings would cause this, but your phone should hit deep sleep after 10 or so seconds of screen off making this setting quite useless. Also if your running genocide you need to be using on demand! You can set the throttle up % in the advanced tab of setcpu. If you wanna utilize profiles what I do is set it to throttle down the cpu as my battery dies. Saing juice for those crucial lower percentages.
Cd's or tapes?

schnowdapowda said:
I wouldn't use the screen off profiles. You only would need them if your trying to have your phone never go into deep sleep for some reason. Not to say the settings would cause this, but your phone should hit deep sleep after 10 or so seconds of screen off making this setting quite useless. Also if your running genocide you need to be using on demand! You can set the throttle up % in the advanced tab of setcpu. If you wanna utilize profiles what I do is set it to throttle down the cpu as my battery dies. Saing juice for those crucial lower percentages.
Cd's or tapes?
Click to expand...
Click to collapse
Sent from my SPH-D700 using XDA App
Thanks for the advice.
But I'm have problems understanding what ur talking about exactly lol. I've never used advanced settings I don't get what they are exactly. I would understand if you don't want to explain what they are but if you did it would be really appreciated. And I'm only 17 lol I've only been rooting for about 2 months I'm glad I kno what I do know by now lol.

lilajrestnom said:
Sent from my SPH-D700 using XDA App
Don't they cost like $70???
Click to expand...
Click to collapse
There's some on ebay every now and then for $5-20
Or you could buy an extra oem batter and an external charger
Sent from my SPH-D700

lilajrestnom said:
Sent from my SPH-D700 using XDA App
Thanks for the advice.
But I'm have problems understanding what ur talking about exactly lol. I've never used advanced settings I don't get what they are exactly. I would understand if you don't want to explain what they are but if you did it would be really appreciated. And I'm only 17 lol I've only been rooting for about 2 months I'm glad I kno what I do know by now lol.
Click to expand...
Click to collapse
I'm saying don't bother with the screen off profile, first of all. Secondly don't run conservative with genocide! Its geared for ondemand (unless your trying to save your battery by not overclocking at all) and ondemand is configured by going into the advanced tab and configuring the usage percantage of your cpu to switch to the next highest frequency at a certain percentage. I use 98% and I get pretty darn good battery life. I don't know if it helps or not, but I also set powersave bias on 25. Just post if I'm still confusing you.
Cd's or tapes?

No I get it now ur talking about the up threshold right?
I flashed this battery tweak and I went to check it right not the up threshold is set to 95 I guess the tweak changed it cuz I remember checking it before and everything said -1. But thanks I get it. So if I had my phone set to 200-1200mhz and ondemand and when I have a high battery level I higher the thrshold and as I lost battery I lower it...?
Sent from my SPH-D700 using XDA App

Battery apps and widgets

I have tried a few and they all seem to suck battery more than the opperating system if you want them to run in the background and record and type of advanced statistics. I would like to get every day Joe's opinions and recomendations on battery apps that work well and record good statistics like
* % a hour of drain
* good battery graph
* apps and processes and there ram and usage % of cpu they consume including the app its self!
Lets get this one figured out together for the best apps that really work! Thanks guys!

The app I found that best fits this general criteria is SYSTEM PANEL

You should try 2x battery works wonders for me
Sent from my SPH-D710 using XDA App

boominz28 said:
You should try 2x battery works wonders for me
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
Thanks for getting back to me. I guess its pretty sad other people don't use battery programs. They must not care about there battery life much

[TIP] Have bad battery life? Here's how to diagnose. (UPDATED 7/29)

Well i been noticing a lot of people complaining (or commenting) on bad battery life on a ROM they just flashed. I decided to start a thread on how tips to improve battery life. It's not necessarily a ROM that gives you bad battery life (specially if most people comment on how great it is)....there might be a few thing you or your phone is doing to cause this.
First: After flashing a new ROM, you will have the worst battery life ever. The battery will have go through a few cycles before battery life will be apparent. It is also worth noting that sometimes a battery calibration will have to be done by either traditional methods or by the Die Hard Battery Calibration Script by Zeppelinrox. (Not sure if it really works, never tried it…..but its worth mentioning)
Second: Turn off unnecessary sync’s in the phone (toggle button) and apps, such as Facebook, XDA (sorry xda), emails…etc). Yes it is cool to have your Facebook notify you every 30 minutes about somebody’s activities, but that takes up power. I am not saying turn off everything, but you have to find your sweet spot about what is to be on.
While we are talking about deactivating sync’s or limiting them, let’s talk about widgets for a second. Let’s not forget widgets are in automatic sync, sometimes you can control the frequency, and they will use extra system resources such as WiFi, 4G/3G, GPS, etc and this means extra battery usage.
Third: Turn off all radio's such as 4G/3G,WiFi, and GPS when not in use. It goes without saying that if you are not connected to WiFi, it is going to use up battery searching for connectivity. Also, If you notice that you lost signal completely while at work or in a building for an extended period of time, I suggest turning Airplane Mode on. I use Airplane Mode at work and my battery drops 2-3% in 4 hours. You can also turn off data (4G/3G) when you phone is not in use by simply turning off the data toggle.
Forth: I highly recommend using the apps, GSaM Battery Monitor, Better Battery Stats, and CPU Spy to monitor and verify wake locks and apps stealing power. I also recommend Eugine's app, CPU Sleep. All are available on the market and also free on XDA, but why not pay the 2 bucks and support the dev's.
GSam battery monitor used to be Badass Battery Monitor (because it was [email protected]) but i guess too many people complained so he changed it to GSam, but it still is the best out there with very minimal system drain. What this app does is explain to you what is using battery and how much. You can see what inactive app is using battery. It will also show you wakelocks, and what apps held your device awake and for how long. A lot of useful info to help track down battery drain.
Better Battery Stats is a more in-depth info about wakelocks from kernel wakelocks, partial wakelocks, alarms (scheduled wakelocks for each app) and so much more. This can be intimidating to look at and read at first, but you will learn your way around it quickly and what it is telling you. It does include a database link to most wakelocks to help explain most wakelocks.
CPU Spy is useful to be to help determine what my CPU is doing throughout the day and shows Deep Sleep which is very important when tracking down battery drain. This is, in my opinion, optional. Not necessary to track down the culprit of battery drain, but it helps for me.
CPU Sleep is a wonderful app designed by Eugine that when the phone hits deep sleep...it ensures all but one core is sleeping until you wake the device. Far as i am aware, it only works for TW ROM's....i am sure he is developing for CM and AOKP ROM's, if he hasn't done so already.
Fifth: Screen Brightness. Now I know we have a huge cool screen and you want others to see it, so you jack the brightness up to 100% or on Auto. The fact is we have a HUGE screen that loves to eat up battery power like it’s nobody’s business. Now I know putting it on the auto selection sounds like a way to sound power. And in a way it is, but you have to realize it takes more power cycling through different levels. I suggest lowering it low as possible that you are comfortable with. I use 20% brightness, and I feel that you use less power than auto because it’s a constant brightness now going from dim to bright and everywhere in between. (-thanks mrrobc97 for the reminder)
While we are talking about displays, mrrobc97(thanks again) also brought up the about turning off landscape views, not to use live wallpapers, and the use of dark wallpapers and themes.
He also reminded me about disabling apps on startup .He and I recommend the app Autostarts from the playstore. I highly recommend this app over anything I used, including Rom Toolbox’s feature that does this. Not to downplay Rom Toolbox in anyway (it is a great app) but I have had bad luck lately with the autostart feature in the past…probably my own fault for fudging something up I shouldn’t have been (usually disabling YouTube is when it goes haywire with FC’s). Autostarts is a bit more advanced then RT’s autostart tool.
Sixth: 3rd party app killers do nothing. Yes they kill everything running on your phone, but the apps you just killed in your background will restart, thus using more battery power to start back up than it would of if you just left them running. This also is the same when you do this in the stock app manager too. (thanks blunified for the tip).
If you have anything to add or correct, please feel free to post and I will add.
Right now i get about 17-20hours on average of battery life on a work day, and 20-26 hours average on a non working day.
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The best so far I have a screenshot for....18 hours up, used 57% with over 9.5 hours left (average).
Update 7/29:
Revised my original post and added in tips from members mrrobc97 and bluntified.

I'm not saying you're wrong, but a lot of this stuff is situational. I think the majority of the frustration people have is when their phones are draining quickly while using basic functions; the reasons why we buy these phones in the first place.
I've tried every gimmick and gadget to get better battery life, but I can't seem to reliably get my phone to drain at much less than 10% an hour, unless I'm just straight up not using it.
I was getting 7-8% on Darkside v8, but since he's taking a break from it I decided to try some other stuff out. That's the best I've had, coming from Juggernaut and DW before.
Same deal with cm9 and AOKP, about 10% an hour with a busy work email, one Gmail account, fair amount of texting, checking my RSS feeds and XDA every hour or so. Screen on automatic brightness.
It's not horrible, but it's not great. Maybe I have a wonky device? Either way, I like having what I use always available, and if this is the battery life trade off for that, I'll deal with it. I live and work in Manhattan so it's not like I'm ever far from a charger.
What am I gonna do, get an iChick phone?
Hell no.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

I understand what your saying. The point i was trying to get a lot of people was to realize that a lot of wasted power loss comes from apps not allowing the device to sleep as it should. I remember watching my phone draining 20% an hour in airplane mode come to realize later that i had to many widgets refreshing, all sync's on and updating every 30 minutes with other apps constantly active not allowing the phone to hit deep sleep at all. I totally agree about a battery should last a longtime without having to check for wakelocks and whatnot. I think the blame comes from a mixture of poorly written apps, android power management system that's not working efficiently as it should, and a battery that should of been a bit bigger.

For sure. People need to have reasonable expectations though. If everything is light up like the Vegas strip your phone isn't going to last very long. But if you have everything minimalist and turned off you have an expensive pet rock. I think the best advice you can give is the self diagnostic stuff so people can examine their habits and figure out a fun to battery balance that works for them. The programs you suggested are all good ones that have helped me out at various points.
I've almost chucked my phone out the window because of the damn media process always running ffs.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

In other words, don't use your phone. Best battery saver
Sent from Samsung Galaxy SIV

snguyen0730 said:
In other words, don't use your phone. Best battery saver
Sent from Samsung Galaxy SIV
Click to expand...
Click to collapse
No not saying that at all. But do you really need to have everything on a half hour sync? Actually just a manual sync would greatly improve battery life.
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™

---

I need to throw in Autostarts app. It enables/disables an app start-up on system boot-up. It also enables/disables an apps start-up when certain events happen (like when a charger plugs in it will start-up a certain app on when an app makes another app start-up that you probably don't need on). It really needs to go on your list Biker.
Another thing you forgot to mention is the screen brightness and your choice of the background theme or wallpaper. OK common knowledge you should know by now... BRIGHTER SCREEN = HIGHER BATTERY CONSUMPTION... don't keep it the lowest cuz you're going to end up switching it back and forth depending how bright your surroundings are thus wasting more battery...just keep it on AUTO! Also...do you really need that snow landscape for your wallpaper? Do you have to view your kids everytime you wake-up your phone?...NO?...then find the darkest coolest wallpaper you could live with. And last go through all your apps and (if the option is there) choose the darkest background theme available, like for the mail, sms/mms, or tapatalk app.
...on another note...YES, I will agree that in order to get maximum life from your battery you will have to sacrifice alot of the stuff that makes your smartphone cool like the amount of widgets you could be running, bright ass screen settings, or that live wallpaper you're running. You also sacrifice instant use of your phone (i.o.w. instead of checking your Facebook widget to see what's up you have to---open notification toggles - enable data/wifi - go to app drawer - open Facebook app - wait for it to load - then see what's up). All that coolness its whats sells a smartphone (see commercials) but it comes at a high battery-drainage price.
My wife has a t989 like me but white and so does her lil' sis. Her setup is identical to mine for the exception of a few apps and that she has a purple version of my Blutiful theme. She's always telling me (or talking **** i.m.o.) about how on her lil' sis phone you are able to view Facebook, YouTube, and News right on her screen (i.o.w. widgets) and not hers and I tell her its not gonna happen cuz I don't want her *****ing later on about how the "phone" sucks cuz the battery lasts half a day JUST like I always hear her lil'sis *****.
...so anyways the point I'm trying to make is that you have to make that choice (coolness vs battery life) or try to find YOUR sweet spot between both of them. Another thing you could do is have a few spare cheap batteries from ebay. They work almost as good as the OEM and for all we know they probably come from the same place and just slap different labels on them. Buy a cheap $3 battery charger also and have them charged and just keep one at home/car/work like that you could swap if the need arises. I also bought a few cheap home/car phone chargers from ebay and also have them at home/car/work. They have all worked good for me w/o any issues. You might catch me with my pants down one day but you will NEVER catch me with a dead phone I promise.

I've almost chucked my phone out the window because of the damn media process always running ffs.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app[/QUOTE said:
There needs to be a fix for that damn media thing always running
Sent from my SGH-T989
Click to expand...
Click to collapse

Another thing to note is, using the "kill all" button on your task manager will use more battery. There are apps that need to run in the background, when you close it, it will have to reopen itself and use more battery power.
Altogether, task managers are no good.

Thanks mrrobc97, I forgot about all of that. I'll add in when I get home. I used Rom toolbox to kill auto run apps a while back and messed something up somehow. Had to reflash. What app did you use?
Thanks bluntified, that's an important tip to remind people too.
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™

narlynarwhal said:
There needs to be a fix for that damn media thing always running
Sent from my SGH-T989
Click to expand...
Click to collapse
Funny you mention that. I read a post the other day about that. Forgot where, but it was saying it has to deal with incompatible media such as music or video types...I'll try to dig it up for you
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™

tjbiker031 said:
Thanks mrrobc97, I forgot about all of that. I'll add in when I get home. I used Rom toolbox to kill auto run apps a while back and messed something up somehow. Had to reflash. What app did you use?
Thanks bluntified, that's an important tip to remind people too.
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™
Click to expand...
Click to collapse
The app is called Autostarts.
Sent from my Blutiful SGSII.

narlynarwhal said:
There needs to be a fix for that damn media thing always running
Sent from my SGH-T989
Click to expand...
Click to collapse
What media "thing"?
Sent from my Blutiful SGSII.

mrrobc97 said:
What media "thing"?
Sent from my Blutiful SGSII.
Click to expand...
Click to collapse
It's a wakelock that involves the media scanner running in the background process . Continuously scanning certain media types. Never experienced it myself but read about others that have
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™

Original thread updated and revised with tips from users mrrobc97 and blunified. Thanks again for your contribution guys.

tjbiker031 said:
It's a wakelock that involves the media scanner running in the background process . Continuously scanning certain media types. Never experienced it myself but read about others that have
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™
Click to expand...
Click to collapse
Weird. Neva had that happen to me. Since wer on that subject...here goes another tip...so ur media scanner doesn't go on and on scanning everything in ur phone...put a ".nomedia" file on the folder(s) u dont want scanned like that the media scanner is faster next time it has to scan ur phone.
Sent from my Blutiful Thrive.

Is there anyway to stop apps like Score Center from always showing up as a running app?
Sent From My Samsung Galaxy S2

I've also noticed that lately Google maps has been a battery sucker. I uninstall it, as using it from the web works fine for me. also MapQuest app from the market is a pretty good replacement and drains far less battery
Sent from my SGH-T989 using xda app-developers app

lowrider262 said:
I've also noticed that lately Google maps has been a battery sucker. I uninstall it, as using it from the web works fine for me. also MapQuest app from the market is a pretty good replacement and drains far less battery
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
CottonCreeper said:
Is there anyway to stop apps like Score Center from always showing up as a running app?
Sent From My Samsung Galaxy S2
Click to expand...
Click to collapse
Like the OP says...get the app Autostarts to disable those apps from running next time you boot-up ur phone.

Battery problems

I flashed the honeycomb battery icon. I have another app that I've been using (Android booster) that is a task killer. it shows my battery life, it was right on before the new icon but now they don't match up the widget says I have 10% more life in my battery then my battery icon on my status bar. Is there any way to fix this problem? or should I just deal with it
Thank you in advance
sent from my rooted speak and spell

xethcore said:
I flashed the honeycomb battery icon. I have another app that I've been using (Android booster) that is a task killer. it shows my battery life, it was right on before the new icon but now they don't match up the widget says I have 10% more life in my battery then my battery icon on my status bar. Is there any way to fix this problem? or should I just deal with it
Thank you in advance
sent from my rooted speak and spell
Click to expand...
Click to collapse
1st off, I'd recommend dumping any "task killer" as the GN2 has this functionality built in, especially since we're talking about battery performance...
2nd, I'd concentrate more on wakelock settings, and if I had to download any app it would be those that helped manage this. This way you can force everything to sleep when your not using your phone...
Also, depending on the governor, you may need to adjust your phones clock throttling upon waking/using the device, custom may be your best bet, but there might be a "built-in" profile that works perfectly for your particular individual usage
Sent from my SGH-T889 using xda app-developers app

For some reason, I seem to only be able to manage about 5 hours of screen time. I've heard of people getting 6-8 hours.
I'm using this ROM http://forum.xda-developers.com/showthread.php?t=2150145 but for some reason, that thread isn't very alive..
I tried the jedi ROM, but I just can't stand it when developers change little things about the UI. Is 5 hours normal for a ROM that's mostly stock? I'm using the UNEAK kernel.

PhxDroid86 said:
1st off, I'd recommend dumping any "task killer" as the GN2 has this functionality built in, especially since we're talking about battery performance...
2nd, I'd concentrate more on wakelock settings, and if I had to download any app it would be those that helped manage this. This way you can force everything to sleep when your not using your phone...
Also, depending on the governor, you may need to adjust your phones clock throttling upon waking/using the device, custom may be your best bet, but there might be a "built-in" profile that works perfectly for your particular individual usage
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the info phxdroid86:thumbup: will check into it. I did get rid of the task killer started using the stock one, I like it.
sent from my rooted speak and spell

Tweaks for saving battery without compromising on performance

Battery is one of the things that's critical for your mobile's day to day use.
I have done my research on the things that has impact on mobile phone's battery life and I am going to jot down the stuff that can clearly save your battery.
1. Changing your scheduler.
By default Android devices comes with CFQ(COMPLETELY FAIR SCHEDULER) which is the worst, So please change it to SIO(SIMPLE I/O) scheduler, This scheduler has been voted as most stable and better for battery. It even solves the heating up issues.
NOTE: DON'T NEED TO OVERCLOCK OR UNDERCLOCK your device if your planning to use your device on a long term basis, Changing the scheduler will do fine
2: Install wake-lock detector
The wake-lock detector requires root, It gives you the idea of what rogue apps makes your device stay awake, Staying awake drains a lot of battery, Best thing to do is to uninstall the rogue apps.
3: Do not install Battery saving apps
Let it be any application, They claim they save your battery by monitoring the unnecessary background apps and closing them. They don't let the device to sleep, Let it be juice defender or you name it. Do not do that.
4: Install push notification fixer
Complaints about push notifications are solved by this APP, It resets your ping time, So that you don't spend unnecessary juice trying to connect to the server.
5: Disable google now
There are better apps which can tell you weather reports, If you feel like you are depending upon google now, Just disable "LOCATION HISTORY" and "LOCATION REPORTING".
6: Wiping cache and Dalvik cache
If you have restored apps using a back-up tool such as Titanium backup please make sure you wipe cache and wipe dalvik cache once you are done restoring, It just optimizes your apps.
7: FACEBOOK MESSENGER AND VIBER wakelocks
As useful as they are they cause so many wakelocks, Use default facebook app for messaging and VIBER app can be greenifed using GREENIFY. Whenever you need it you can use them, Once u open the app u can get the missed call info as well, So if your real hungry for battery do this.
8: USING GREENIFY
Frustrated about apps causing wakelocks, Install GREENIFY and forget it. The app will be available whenever u need them , But it won't run on the background thus saving battery.
9: Do not manually close APPS
Android has got it's own task manager which does a pretty good job, Each time you close and open an app each requires more juice, So let android handle with the task and stay relaxed
10: Turn your sync off
With push notifications on, You will get your twitter updates and hotmail without sync, The only app that requires sync is GMAIL, which you can do it manually
I am posting my screenshot as proof.

Thank's Bro
Good Work dude!!!!
keep it up :fingers-crossed:

Thanks
gishanstc said:
Good Work dude!!!!
keep it up :fingers-crossed:
Click to expand...
Click to collapse
Thanks mate, Will do

Thank you
Good, sensible, suggestions: Thank you

Welcome Mate
hipstar said:
Good, sensible, suggestions: Thank you
Click to expand...
Click to collapse
Thanks bro , More suggestions on the way:good:

Thank you nice thread, found more tips for saving battery
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Robi959 said:
Thank you nice thread, found more tips for saving battery
Sent from my GT-I9100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You are welcome mate :good:

Thanks for your tips, so useful ! applying ...
i hope it will give better results

Welcome mate
lomistars said:
Thanks for your tips, so useful ! applying ...
i hope it will give better results
Click to expand...
Click to collapse
I am sure it will imrpove your battery bro ,
Cheers:good:

What about the kernel? Is it recommended to change it?
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How do you change the scheduler?
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kuljit55 said:
How do you change the scheduler?
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Click to expand...
Click to collapse
Advance options/ Performance/ I/O scheduler
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I dont seem to have such options on 4.1.2 official JB, is this for a specific rom?
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Hi all,
I don't know if it is a good thing or idea i'm doing everything but so far it is working for me and I would like to get your opinion about that method for using less battery, the fact is that I always use my phone on 2G and wifi and GPS is on only when using them but for the apps I always force stop them and they remain stopped unless I open the app once again and I found I gain on my battery usage with my battery lasting for 2 to 3 days depending on the usage (many sms, sometime facebook, viber and whatsapp, messenger) but I force stop when I finish.
Do you think it is a good idea to do like that??

Don't change the kernel.
Eduardogv said:
What about the kernel? Is it recommended to change it?
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Click to expand...
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Kernel is like the heart of the ROM bro, DEVS have taken good time finding out which is best suited for stability and battery life.
I am using SENTINEL ROM and i have the sentinel kernel that comes along with it, I don't want to experiment with it, Coz it just works fine.
The kernel that comes along with your ROM should work fine, In case you want to experiment with other kernels you can do so, But you will have to find the one that best suits your ROM :good:

Ultiweap said:
Hi all,
I don't know if it is a good thing or idea i'm doing everything but so far it is working for me and I would like to get your opinion about that method for using less battery, the fact is that I always use my phone on 2G and wifi and GPS is on only when using them but for the apps I always force stop them and they remain stopped unless I open the app once again and I found I gain on my battery usage with my battery lasting for 2 to 3 days depending on the usage (many sms, sometime facebook, viber and whatsapp, messenger) but I force stop when I finish.
Do you think it is a good idea to do like that??
Click to expand...
Click to collapse
Everytime you manually close your app, It will take more battery to load up the next time. The default android will watch your usage and kills it accordingly. It is best to leave it to android. Cause everytime you launch a app freshly there is some extra drain. So best to leave it to android.
I used manually clear the apps as well, But now I never do that, Guess what i get better battery :good:

Thanks A Lot
Hi
Thanks a lot for the useful post, i have increased my battery life by almost 70 percent.
My battery never used to last for more than 9 to 10 hours & now it last for almost 20hours, attached my screenshot.

Welcome
ShaggyM said:
Hi
Thanks a lot for the useful post, i have increased my battery life by almost 70 percent.
My battery never used to last for more than 9 to 10 hours & now it last for almost 20hours, attached my screenshot.
Click to expand...
Click to collapse
I am glad that I helped you mate

How do I change my scheduler to SOI?
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Hi, i have cyanogen and when i try to change my scheduler to SIO i only have these: noop, deadline, cfq
which one to choose? Thanks!
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