Develop Bugs

Turning 3g off and data for longer battery

Is 3g signal the same signal if I turned it off and just had 2g? Why I'm asking is I usually have 0-1 bar at home and I know poor signal strength causes battery drain. If I go 2g will I have more bars or the as I would in 3g?
I'm asking this because I have been told when I bought my last phone.. tp2 that it had to have a data plan or nothing will work. So my question is and have asked before but never have gotten a response is.. if I turn data off.. will I still get incoming sms? Im I better off getting juice defender then? Will this help? That is.. is sms workable with data off.
Sent from my PC36100 using XDA App

SMS is 1X. You don't need data for SMS texts. Texting is available on even the OLDEST non data phones.
Now, if you turn off data, you've pretty much eliminated most of what makes a "smart phone" smart.
Spare batteries are cheap, as are several different chargers. One for car, one for office, one for home, one for travel, etc.
Better you get into the habit of whenever you're near a power plug, to plug it in and let it charge. Once it becomes an ingrained habit, you'll not worry about battery life as much and you'll get much more enjoyment and use out of your phone. Besides, better get used to it. Processor speeds, power hungry hardware keeps advancing, battery tech doesn't.

I have 3 batteries and a tp2 I use to charge the others while not in use so always have a full battery. I don't sync anything but my email. I can always turn the data back on for internet or anything I'm using for internet. Why I mentioned juicedefender... also I underclock and undervolt. Just looking for a longer battery life. I don't get more than 4 with moderate use.
Edit: one doesn't have to get use to it if there are ways for longer battery life. I'm sure you have all the accounts sync and checked, screen brightness set all the way up, 4g on, gps on, and overclocked and saying get use to it its a smart phone.
I don't have 4g and I do use the internet a lot and check my email. I get my email to sync when I chose to look at my email and don't need to check every so often wasting my battery. Not everyone uses all the stuff you can use the phone for or as much as someone else.
Sent from my PC36100 using XDA App

You're saying you only get 4 hours life?????
I keep wifi on, BT on, data on.
Between 8am and noon, I've browsed, made 2- 30 min phone calls, updated 3 apps from the market, played (shhh, don't tell my boss) 3 different games for at least 15 mins each, checked the local news. and I'm at 82% using the stock battery.
Also, have exchange push enabled, gmail pull at it's quickest interval, NOT overclocked, not running any task killers. No 4G here, so that's off and GPS and NETWORK location are also both off.
If you're down in 4 hours, you have a different issue. Better install a few monitoring programs to see what the heck is going on.
Granted the 1500mah battery is way too anemic for this phone, you should be able to do better than 4 hours.

I agree you defiantly have something going on causing a battery drain. I used to get 6-8 hours with moderate use and have worked a lot of different things to finally get up to 14016 which i am happy with (i still dont see how anyone gest 30-50 unless there "moderate use" is not touching the phone except to have 1-2 calls or something on the break.
i recommend the paid version of system monitor. it lets you see your battery drain cpu usage and device usage. it also has a history option that will let you see which apps use the most power. The only other thing i can think of is you have an app preventing the phone from sleeping so that your setCPU profile and juicedefender are not doing anything most of the time.
as far as turning data off. You can receive SMS, you receive phone calls obviously, you can not download MMS or anything else requiring internet data. there is nothing wrong with turning it off when nothing use. (i personally use ultimate juice so that unless i have my screen on and unlocked or my phone is on the charger data is off.

Compusmurf said:
You're saying you only get 4 hours life?????
I keep wifi on, BT on, data on.
Between 8am and noon, I've browsed, made 2- 30 min phone calls, updated 3 apps from the market, played (shhh, don't tell my boss) 3 different games for at least 15 mins each, checked the local news. and I'm at 82% using the stock battery.
Also, have exchange push enabled, gmail pull at it's quickest interval, NOT overclocked, not running any task killers. No 4G here, so that's off and GPS and NETWORK location are also both off.
If you're down in 4 hours, you have a different issue. Better install a few monitoring programs to see what the heck is going on.
Granted the 1500mah battery is way too anemic for this phone, you should be able to do better than 4 hours.
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Mind sharing your exact setup? Rom/kernel etc. Seems like your getting pretty good mileage.

I leave my phone on Wifi all day at home (no signal either, 1-2 bars) and battery drain is minimal now and it's not constantly looking for a data signal. I go approximately 30+ hours on 1 charge

I have the system paid app already. My problem is I have the worst reception where I live. Usually –105 to -118 and -120 I heard is no reception at all. So its more tower pulling and increasing voltage to get a reception. So I'm trying to do what I can to save a little battery...
Sent from my PC36100 using XDA App

dudewithnofood said:
Mind sharing your exact setup? Rom/kernel etc. Seems like your getting pretty good mileage.
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Rooted stock, deodexed. Netarchy kernel. Have old airave at home for voice, and at home, I use WIFI. GPS doesn't seem to have that big of a drain
I was slightly incorrect, I do have setcpu profiles. Thought I had them off, but they are on, but NOT overclocked. For battery >75, or on power, default max, 384 min, conservative. Screen off, 384/384. Brightness is NOT high as I work in a well lighted workspace. Sometimes I do turn off WIFI tho. It'll fight with bt on occasion. Same freq. But usually it stays on. I do use phoneweaver for profiles. And I also use TASKER to create specific app profiles. IE turn on gps, wait 15 secs, start gps capable app, turn off when app closes, etc.
I also did the battery calibration "trick" and every now and then I clear the battery data from recovery. Not sure if that helps/matters or not.
I don't use the camera app, nor do I use friendstream. GTALK (known battery killer) is set to NOT running/syncing.
Is it great battery life? no, I'd say average. About what I'd expect. I'm not expecting 24 hours with it while using it and not recharging. When I'm out and about, I'll plug it in any chance I get, and also have spare battery or 3 from my TP2. For a full charge, I have an external battery charger. I was using the TP2 as a charger but don't trust it's charging circuits either (yet another HTC product. lol)
I just checked and I'm at 49% assuming the "battery guage" is accurate. 8 hrs to 49%. Few texts, another call, some more news, using TIKL. Time to plug it in and let it charge. But it was a nice test to see how long my normal use would last.
If your signal is that low (to the OP), try to get an airave, esp one of the newer ones with 3G/EV capability! I am going to call and ask if they'll replace my older one with the newer one.

I already thought of that option. Don't have internet here... downfall..
Sent from my PC36100 using XDA App

[Q] Better battery life without JuiceDefender?

For those of you unfamiliar, JuiceDefender is a tool which toggles WiFi and Data when the phone is off, and turns on WiFi only when in a location where there's an accessible network. This software more than doubled my battery life on my Bionic, and so it was one of the first things installed on my phone.
I've noticed JuiceDefender has been sucking a fair amount of battery on ICS/GNex (usually 4% in the battery graph), so today, for an experiment, I uninstalled it for the day, and I've noticed that I've gotten better battery life than I ever have with the phone, across a mix of WiFi areas and 3G.
Has anybody else had this experience, or was this just an odd one-off situation? Could there have been a change in ICS which diminishes the need or hurts the usefulness of it?

I've had JuiceDefender off too and for me I seem to get slightly worse battery without JuiceDefender. Without JuiceDefender on I tend to get a steeper battery drain during idle times compared to leaving wifi and 3G on. I think the usefulness of it depends a lot on your usage habit and signal quality as well. I usually get spotty signals so that is probably why JD helps noticeably.
Interestingly though if you take a look at the battery graph in settings, every time JD toggles your data on it seems to force the phone into awake state, but just leaving data on would keep the phone in an idle state most of the time. That's definitely something that is making JD not as good as if should be.
Sent from my Galaxy Nexus using Tapatalk

Honestly I think the only time you get noticeable battery improvements with juice defender is with periods of no use. Which is why it works good for me, on work days that is
Rellikzephyr
Sent from my Galaxy Nexus using Tapatalk

RellikZephyr said:
Honestly I think the only time you get noticeable battery improvements with juice defender is with periods of no use. Which is why it works good for me, on work days that is
Rellikzephyr
Sent from my Galaxy Nexus using Tapatalk
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Totally agree with this.

That's odd, as for me, the phone is mostly in my pocket all day. Maybe it's because I've got a 15 minute synchronization time for most things?
Day three without JD, still getting twice the battery life that I was getting with it on. Delightful.

I don't like any Kind of app that claims IT saves battery life because it just doesn't work! Fact is that its just another apps that sucks resources out of your phone!
Sent from my Galaxy Nexus using XDA Premium App

Going to have to disagree and while there are many variables juicedefender can offer big saves depending on your usage. I have had 1.6x increase as stated in the app and confirmed by the extra hours with the incredible. I am waiting to try it with the GN until I have a idea what battery life is without it. First week is useless anyways with a new device as you check it more often and the OS is still refining the battery meter.

Its all related to how you use your phone. Disabling Wifi, Data, BT and so on automatically, managing autosync saves battery. The app itself sucks almost no battery power - if i can believe my monitoring app (SystemPanel 1.1.1) which i use unfrequently to control app behaviour on my Galaxy S1 (with ICS and before that, on GB). Im taking up this "Old" posting because i have battery issues on ICS - almost half of the lifetime after upgrading from GB. But i think its because im now more playing around with the phone, no app is sucking more power than usual.
I noticed that JD cant control networking (via apn change) anymore, can somebody confirm that? If i turn the display on, my 3G/HSDPA connection is there - under GB it took 3-5 seconds until i had internet connectivity back.

Never understood some people's philosophy on extending battery life.

I've read a lot of posts complaining about battery life, and other posts about users suggesting ways to improve battery life. I've read stuff like, disable LED, haptic feedback, lower volume, lower brightness, LTE turned off, underclocking, turning off sync, live wallpapers, etc, etc. To me a lot of people are crippling their phones. If your battery can last you 10 hours, that's enough because you'll probably be somewhere you can plug in. What's the point of being able to go for 20 hours when you'll probably have the opportunity to charge it before then? It's better to have and enjoy all the features.
Maybe somebody can chime in and give me their point of view.

Sent from my SAMSUNG-SGH-I747 using xda app-developers app

I agree. I would never want to sacrifice a feature just to extend the phone's battery life. Instead I use a custom rom that has all the features (and more) and 12 to 18 hours of battery life.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Part of the issue is a sociological thinking pattern between wanting "more" and needing it. Depending upon the type of lifestyle you live, sometimes, battery life is of dire importance to have if you're constantly migrating around. But I agree, some people who aren't in that sort of disposition go overboard with it.

I just bought a bigger battery :good:

I agree wholeheartedly. If your battery is lasting you through your day (which mine does, and more) then why try to conserve it?

Yea its funny stuff people complain their battery only lasts 20 hrs but yet they want it to be able to do everything a computer can do and more....
Sent from my SGH-I747M using xda premium

The only conscious effort i made to extend my battery life was to undervolt the CPU a bit, but this was more for the lower temperature advantages with extra battery life being an added bonus. Beyond that i turned off things i dont use like BT, no need having something running that i have no use for. Overall i was happy with the stock battery except for any kind of heavy video or game usage which drains it pretty quick - solution : bigger F'n battery :highfive:

i agree that some people seem a bit obsessive about it. but we shouldn give bad battery life a pass either. hopefully we will see some sort of advancement in batteries to have better battery life while keeping them at a decent size.
i was kinda worried id have horrible battery life with the S3 being that its LTE. my last LTE phone was so bad it would die after 8 hours idle.

Aftcomet said:
I've read a lot of posts complaining about battery life, and other posts about users suggesting ways to improve battery life. I've read stuff like, disable LED, haptic feedback, lower volume, lower brightness, LTE turned off, underclocking, turning off sync, live wallpapers, etc, etc. To me a lot of people are crippling their phones. If your battery can last you 10 hours, that's enough because you'll probably be somewhere you can plug in. What's the point of being able to go for 20 hours when you'll probably have the opportunity to charge it before then? It's better to have and enjoy all the features.
Maybe somebody can chime in and give me their point of view.
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I keep the brightness to the lowest setting anyway, but I do all of this because I go to school fairly far from my home, and I'd like to be able to play games on my phone without wasting 5% battery every 15 minutes. I haven't switched power saving off since I bought the phone.
Stock ICS on my S3

I bought the extended battery because I like playing games from time to time and I don't want tl have to worry about my phone dropping 15% after playing something for 5 minutes. Like someone else said earlier. It really depends on the kind of lifestyle you live. I for one don't mind having the extended battery on my phone but I do miss how light it used to be.
Sent from my SAMSUNG-SGH-I747 using xda premium

Naldonnis said:
I bought the extended battery because I like playing games from time to time and I don't want tl have to worry about my phone dropping 15% after playing something for 5 minutes. Like someone else said earlier. It really depends on the kind of lifestyle you live. I for one don't mind having the extended battery on my phone but I do miss how light it used to be.
Sent from my SAMSUNG-SGH-I747 using xda premium
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How heavy is it? Does it fit in a case?

For me, and I want as much battery life as possible to avoid those situations where there is no way to charge you phone even if that only happens 1 a month or less.. As a parent I can't just let my phone die on me... I always need enough to be able to take or make that important calls/text. My goal is to have at least 20-30 hours of battery life per charge.
I think the only major feature I've given up is live wall paper. Other then that, it is just disabling other unused apps like gtalk, talkback, Google bookmarked sync. As well I've uv my phone as much as I can and run a 1350 max clock speed. I really don't see any major dip in performance as long as you do it right . I do use Tasker to disable syncing globally when the screen is off and make sure it automatically disable bluetooth after 10 mins once it disconnect. Also I have the Y5 app to automatically toggle wifi based off my network location. The most useful battery saver I've found is to set my wifi to only connect when the screen is on. Seems kind of backwards but it works well when very little data is process during idle rather the the phone requiring to keep a constant connection to wifi.
Sent from my SGH-I747 using xda premium

I'm also one of those people that closes an app as soon as I'm done with it. Use an app, press the home button, release and hold home, swipe the app away, sigh in relief. An old habit carried from my S2 Skyrocket, where getting 8 hours on stock was above average.
Stock ICS on my S3

sly-tendencies said:
I'm also one of those people that closes an app as soon as I'm done with it. Use an app, press the home button, release and hold home, swipe the app away, sigh in relief. An old habit carried from my S2 Skyrocket, where getting 8 hours on stock was above average.
Stock ICS on my S3
Click to expand...
Click to collapse
I know that feel, I was on an LG nitro HD.
Sent from my SAMSUNG-SGH-I747 using xda premium

I have my screen brightness at 40-50 auto off.. i cant imagine turning it all the way down like alot of people say.. even when auto brightness is on it look very dull and dark at night to me.. Same thing for my tv with auto brightness.. but i still get good battery life. I am fully charged at about 6pm i use it till bedtime and use it for my alarm.. get up 4 am and when i get home at 2pm its still over 40%.. only thing i do is close all my running apps by holding home button a few times a day and same with ram

I work in an office so it's plugged in for the 2 hours before I leave so I have everything on full most of the day (brightness, lte...). Also, by undervolting I'm getting 30% more battery.
I think tips on increasing battery life like turning off lte and brightness are for people who can't plug in throughout the day or for emergency situations when you want to get the most out of your phone because there's some reason you can't charge.
Sent from my SGH-I747 using xda app-developers app

I get anywhere from 12 - 23 hours depending on whether I'm at work or off. I can live with that...but there are situations where being unreachable poses a problem.
So, to deal with my phone addiction, I got an original replacement battery. Always have it charged and on me. When the phone shuts down, pop in the replacement and your done. About a minute without a phone. This way I don't have to UV, worry about brightness, WiFi, Bluetooth, etc...
I can't deal with the bulk of an extended battery.
sent from my SIII i747

derberts said:
I work in an office so it's plugged in for the 2 hours before I leave so I have everything on full most of the day (brightness, lte...). Also, by undervolting I'm getting 30% more battery.
I think tips on increasing battery life like turning off lte and brightness are for people who can't plug in throughout the day or for emergency situations when you want to get the most out of your phone because there's some reason you can't charge.
Sent from my SGH-I747 using xda app-developers app
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Click to collapse
30% more battery by simply undervolting? I think that's quite an overstretched statement. How is that even possible?

Aftcomet said:
30% more battery by simply undervolting? I think that's quite an overstretched statement. How is that even possible?
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Click to collapse
Its not possible. Not by solely UVing. The sole purpose of undervolting is so that your phone dosent overheat when running high clock speeds. Saving battery is just a perk. You might save a few percent with the undervolt but nowhere around 30%. But don't take my word for it.....
>>>> http://forum.xda-developers.com/showthread.php?p=33282284

[Q] Initial charge?

I hate to be the guy that asks this, but I just want to make sure as from what I understand this is different from phone to phone. From what I understand, Li-Ion batteries, like the GN2's, do not have a memory effect of any kind? And thus all battery calibration rituals and nonsense are entirely pointless for this handset?
The reason I ask is because I wasn't able to charge the device to 100% before use like I was always told to do with new phones. My device was turned on and used until it drained to around 10% at which point it was charged to 100%.
Now, after 2 weeks of use, I feel that my battery is not as good as it should be. I'm barely able to get more that 12 hours. I'd be happy to post some battery graphs in the morning.
One last thing, if I did mess up my battery, or if my battery is messed up or less functional than it should be, would buying a new battery fix all my problems?

Youvare right. All that calibration stuff is nonsense.
I have never charged my phone to full before using and draining the battery and my phone still lasts all day on mostly heavy use.
Could you post your batt stats?
Sent from my GT-N7100 using xda premium

Today I ran my phone with the "lowest" possible settings, that is lowest brightness, CPU power saving, and no haptic feedback. I did not turn off wifi. Doing this I was able to get a surprising 16 hours, although you can see from the graph that I didn't use my phone as much. Attached I have a screenshot of what it's like with the highest possible settings (no power saving stuff, and brightness all the way up, but no GPS). Sorry I don't have a pic of the percentages for the high settings, I never thought to do that.
What concerns me the most is this: even with the lowest settings, I'm only getting 2 hours screen time. (last pic)

What's interesting is that you would think that if I'm getting such poor screen time, there would be something else using a lot of battery, but there isn't. This led me to believe the problem was with the battery. I discovered a pretty big scratch on my screen the other day, and I have some monthly insurance plan from best buy, so I was thinking of just getting a new one. The longer I wait to get a new one, the harder it will be to set up everything again. lol
I noticed that compared to other GN2s, mine seems to wake up a lot when the screen isn't on. The awake periods tend to correspond with drops in battery and also when I have a poor signal. Could this be caused by my phone trying to look for signal and using battery?

Yes poor signal that results in the phone searching for better 3g/2g will drain the batteey faster.
Can you try using it in airplane mode with wifi only for a day and see how that goes?
Also install Better Battery Stats and after a day or so of normal usage check your partial unlocks to see if a rogue app is preventing deep sleep and sucking your juice.
Sent from my Nexus One using xda app-developers app

Yeah it us definitely your signal playing a role. Also you have a lot of wakelocks showing up
Sent from my GT-N7100 using xda premium

Dude you have major wakelocks that eat up 80 % of your battery!
Go to application manager and remove all the apps you don't use.

K, I agree with my week signal using battery. I only have 75 apps on my phone and they're all pretty mainstream, no obscure apps. Right now im in school with 86% battery, I'm turning on airplane mode now. I have noticed however that when I clear my ram it closes like 50-60 processes each time. I am always closing my apps, but 50 seems extremely high. im gonna turn on airplane mode and see how that goes...
thanks!

Yes, you do have poor signal but that's not all. You have terrible wakelocks pal. Install BBS and monitor which apps are the culprit. It's not about 75 apps, even 2 or 3 bad apps, which have hidden advertisement going on could suck your battery flat in no time.
So first thing, install BBS. 2h screen on time is horrible!
Btw- If you're on 3G, try to switch to 2G. Difference will be unthinkable.
Sent from my GT-N7100

Thanks everyone! I'm really loaded with school work, so I don't have a lot of time right now. But long story short, airplane mode saves my battery like crazy. I started school with 86%, turned on airplane mode, and I'm at 79% right now! more later

Is it safe to say I fixed it?
3h screen over 2 days isnt bad right? Perhaps just a bit worse than what others are getting?
Sent from my SCH-I605 using xda app-developers app

Galaxy Note 2 Battery Life

Hello guys.
I've been reading these forums for a few months now and find it very very helpful in configuring my device. It's just now that i decided to sign up so i can be part of this great community.
This is my first ever post and i would like to get help regarding my battery life.
Ive read a few articles about battery saving and also from forums where people usually get more than a day's worth of battery life. That got me wondering why i only get around 8-10 hours average considering i only use it very lightly as im usually busy at the office. My actual usage time range about 60% of those 10 hours when i use the phone during breaks.
Here are example screenshots of my daily usage:
Here are some details about my configuration:
Brightness set to auto, most of the time at 75% level
Wifi, bluetooth, gps always off
Haptic feedback set to minimum
Mobile data always on and set to WCDMA only, area where im at is usually weak peaking at 2 bars of H and H+ signal strength
Gmail set to push notify
A few apps and widgets set to sync after every few hours(accuweather, flipboard)
Ive been considering getting an extra battery because of this but i really want to make sure first whether i could still do something or whether im doin something wrong thateads to the battery draining too fast.
So please if you have any more tips i could use, please help me out on this.
I thank you in advance.
Sent from my GT-N7100 using xda premium

Also here and additional screenshot to go with the two previous screenshots i posted. It says here ive only had the screen on for 3 hours.
Sent from my GT-N7100 using xda premium

Their battery lasts whole day long. It means that they get 10 hours of screen on time only. Not 24 hours.
Sent from my GT-N7100

Yeah. But in my case the 10 hours is the total life of the battery from the time it is charged until it dies. I'd be lucky if i even get 4 hours screen time out of it.
Do you have an idea why this is so?
Im guessing its because of the weak signal where im at and the fact that i set my phone to search for WCDMA only. Although im not sure whether this is really the culprit. I'll try setting the network mode to auto for now and see if anything changes.
Sent from my GT-N7100 using xda premium

Looks like it.
Try better battery status.
Sent from my GT-N7100

Well after i changed it to auto it improved a bit. Its currently at 14% after 11 1/2 hours with 4 1/2 hours of screen on time. The phone stayed on full edge signal for most of the time (which kind of sucks because internet became painfully slow on edge).
But still, i think this is far too short when compared to those who can get it to more than 24 hours battery and more than 10 hours of screen on time.
Is it possible that i have a defective battery?
Sent from my GT-N7100

Do you have locations services and etc (all 3 options) checked in the maps settings?
I don't get near as good battery life and my phone spends a lot of time awake. This appears to be do to google maps constantly updating my location. I would turn this off, but then i would loose google now functions.
Any help would be great.

BlueGoldAce said:
Do you have locations services and etc (all 3 options) checked in the maps settings?
I don't get near as good battery life and my phone spends a lot of time awake. This appears to be do to google maps constantly updating my location. I would turn this off, but then i would loose google now functions.
Any help would be great.
Click to expand...
Click to collapse
I have only two of them checked(Use Wireless Networks and Location and Google Search). I have GPS disabled. i only turn GPS on when i'm traveling to an unfamiliar place which is not too often.

i got exactly the same problem, whats your firmware?
since i updated the phone to 4.1.2 the battery drains alone, every 8 hours it discharges 25% without using the phone, i am lucky if i get 5 hours of screen. The android os is the one draining all the battery in my phone. On 4.1.1 i could get 7 hours of screen time with 20+hours overall.

yudodis said:
i got exactly the same problem, whats your firmware?
since i updated the phone to 4.1.2 the battery drains alone, every 8 hours it discharges 25% without using the phone, i am lucky if i get 5 hours of screen. The android os is the one draining all the battery in my phone. On 4.1.1 i could get 7 hours of screen time with 20+hours overall.
Click to expand...
Click to collapse
i got 4.1.2.
I can't compare mine to 4.1.1 because when i bought mine it got updated to 4.1.2 after a few hours.
having to charge at least two times a day really negates the otherwise great features of this phone.
I really hope we figure this out. I'll try UtkarshGuptas suggestion using Better Battery Stats and let you know what i find out.

I did they and found Google location services is the culprit.
I'm am referring to the locations services found under location setting in the actual Google maps app. I believe turning of location reporting may disrupt Google now features. Google locations devices is reading out as the main reason for nine consistent partial wake locks on better battery stats.
I'll try turning these features off and awe how it affects battery life and Google now tomorrow.
Sent from my SPH-L900 using Tapatalk 2

battery life sucks on Mine :/

BlueGoldAce said:
I did they and found Google location services is the culprit.
I'm am referring to the locations services found under location setting in the actual Google maps app. I believe turning of location reporting may disrupt Google now features. Google locations devices is reading out as the main reason for nine consistent partial wake locks on better battery stats.
I'll try turning these features off and awe how it affects battery life and Google now tomorrow.
Sent from my SPH-L900 using Tapatalk 2
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Click to collapse
Please let us know.

after doin some tests with bbs i found the wakelock is mhl_wakelock,

First off, forget all the battery programs. Factory default your phone and add an apk at a time and use. You'll be able to tell what apk is the problem with a lil testing. Slow process yes but pretty straight forward and to the point. I do have a Note 2 and have no battery issues being rooted and having tons of programs, etc. Basically, I use and abuse my device as per my job and still get a day and a half out of the battery.

People who can get 24hr coupled with 8hr screen time most likely have their phone on low brightness and on WIFI not data.

I got a new battery and its still lasts the same as the other. Yeah it may be because of the mobile data always on that eats up my battery.
Problem is my data connection is my primary internet source i dont always have wifi hotspots. So i might just have to live with the short battery life or learn to turn off my data when i dont need it.
I'll still try looking for other things that contribute to the battery being drained though.
Thanks everyone.
Sent from my GT-N7100

MohJee said:
People who can get 24hr coupled with 8hr screen time most likely have their phone on low brightness and on WIFI not data.
Click to expand...
Click to collapse
I have GPS disabled, auto brightness (but fairly high level) and that improved battery life quite a bit. I then changed kernel to NEAK kernel, reduced the voltage levels for the CPU and that further improved battery life. I can get a full 24 hours on one charge and with normal (?) usage). With the new kernel I can also modify the charging current to a slightly higher level which reduces the time to bring to a full charge.
All in all not too bad but to expect more than 24 hours is unrealistic in my opinion as it is a big handful of electronics!

Not sure what you guys are are doing different. This is my first full month with my note and the battery is a beast. GPS is enabled at all times but all other syncs are disabled. That's just from previous experience. Sync will always drain the battery. So mine is off. I went as far as removing all the extra chargers around my office and home. .now I only need one. And I alsi don't see a need for an extended battery unless I'm going to be away from civilization for a few days. By the way..that was the only time I've killed my battery..kinda. see screenies
--I forgot about brightness- mine is set to 50% and 4G/LTE ..if the device is always searching for it, it will kill your battery. I turn it off at the office as much as I can.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

I get between 6-7 hours of on screen time on mine.
Using dark backgrounds really helped the bettery life for me. I use a dark wallpaper for touchwiz, whatsapp, and also carbon as my twitter client.
Using Perseus kernel also helped because it doesn't ramp up the cpu as high as the stock kernel.
Wanamlite rom.
Brightness set to lowest at home. 25-50% when outdoors.
Two MS exchange emails set to push.
I use wifi all the time unless it's not available I switch to HSPA+. what a waste of a paid data plan
Google now disabled because it's a battery hog. location services kept on though.