Develop Bugs

Extreme battery drain?

My phone:
- stock rom .62
- latest doomkernel (v10)
-.36 baseband
I removed all bloat, have 310mb internal memory free (ran supercharger)
I configured setcpu 806max, 134min, smartass governor and screen off profile 365max 134min
When the screen is off, i don't have the drain. It was at 74% when i went to sleep, when i got up about 9 hours later it was STILL at 74%, so there's practically no drain when the screen is off which is really nice.
But when the screen is on, the drain is immense. I have about 1% drain every 3min when the screen is on. It's on max brightness. I just left the screen on continuously for about 3 hours, and it has gone from 70% to 14% in just those 3 hours leaving the screen on (just leaving the screen on, doing nothing else on the phone).
Is this normal? If not, can somebody tell me how i can find out what is causing this drain? I'm happy about the drain (which is zero to none) when the screen is off though...

you are doing everything ,however if you are using high powered apps like Muffin Knight/Experiment /etc they will drain battery fast under 3 hours

I'm not running any apps besides the standard+setcpu

Display needs to be lowered. Make it Auto.

Turn Wifi off. If you don't need it, it's just awful to have it on because it's always searching & searching and wasting battery.
Also, use this app that I'll link below. It has something called a "Smart Power-saving" function where all 2/3/4G and WiFi will shut off when your battery is 20% or lower, thus leaving only Phone and SMS activated, and there's an option for root users where the cpu will underclock when the screen is locked! It DEFINITELY helps!
The market page is all in Chinese, but the app is in English.
https://market.android.com/details?...DIxMiwiY29tLmRpYW54aW5vcy5wb3dlcm1hbmFnZXIiXQ..

Battery life stats and questions

What's a good figure for battery life on the GS3? The best I've got is about 31 hours using on demand and bfq. Any one got better life using other settings? I heard someone getting about 43 hours life but that seemed to be a little unbelievable. Let me know what your getting
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

What you reported is definitely "the average". Most actually only get a day, if they're lucky of moderate use and have to plug in before sleep every evening and get going on charge in morning. So its more like 15 hours actually. And your 31 max is very common high end for people who've stretched it out.
I'm not sure if you're stock rom or not and if rooted either but that makes a big difference.
I'm rooted ( and would ALWAYS RECOMMEND ROOT FOR EVERYONE EVEN UF NOT FLASHING ANY ROMS AND STAYING ON STOCK. The ability to have full control is important.
Changing kernels and more importantly, undervolting, will give you that longer life you're looking for.
I'm currently on KyanROM with either Ktoonez or Faux kernel (heavily tweaking and testing both) and have this phone beautifully undervolted to exceptionally low and very stable mv numbers! Thus getting me that lovely 36-45hour average (you mentioned you saw posted elsewhere - yes it is possible and many are doing it). I basically only need to plug in every OTHER EVENING or night between 6pm and midnight depending on usage and I'm a moderate to heavy user (with a lovely 3-5 hours of screen time as well) AND I also have my phone overclocked to 1.8Ghz! Surprisingly, the oc doesn't make much battery life impact at all because the phone isn't constantly having to run at high levels, only in short spurts. Actually, due to rooting and kernel change I'm able to have my phone run as low as 192Mhz during much of its general activity and deep sleep ( which I get a ton of as my phone basically always goes into it when the screen goes off). This saves me A LOT of battery life.
I also use LTE, which is actually one of the biggest if not the largest battery hog, next to screen time of course. But with that being said I only use it when needed and have it turned off when not in use.
As for my peak I was able to squeeeeeze out 87 hours once, on my stock battery BUT that was with some abnormal(for me) measures that really help conservation. Ie, no LTE, under clocked to 1.2Ghz for good part of the three days, much less then normal screen time over the period of which I used it at lowest level with even further reduction via screen filter, I actually used airplane mode during my three overnight sleeps (which I seldom use but if you can hack it, do it! It can really save battery overnight. My current setup basically SIPS MY BATTERY AT 1% EVERY 3.5-4 HOURS OVERNIGHT WHEN IN AIRPLANE MODE), mobile data was off for most of time but did use my wifi at normal level (wifi uses less especially if good signal with few reconnects/scans), used my typical low UV numbers, kept my notification updates/syncs/wakelocks to a minimum and lastly kept my memory virtually clear if unnecessary background apps.
Doing ALL of this allowed me to get OVER THREE DAYS BATTERY LIFE. But keep in mind I seldom do many of these battery saving tips on a regular basis but some do and if you can, they WILL work to extend your life substantially!
To wrap up (this long winded post/reply) I'll give you my general UV mv range numbers and the typical everyday simple battery saving methods I use.
1.My voltage at lowest clock of 192mhz=800mv with gradual (smooth and almost linear curve) increase up to a mere 1200mv at a whopping 1.890Ghz clock.
I use NOOP scheduler with ONDEMAND governor most of the time, sometimes SmartassV2.
My screen off and deep sleep use this lowest 192 clock speed and with no wakeup lag.
2. I use my screen at 0% brightness most of the time (except when outside or in high lighting environment). I use the brighrness widget app to control this as it is easier and works better then stock settings. I actually even further reduce my brightness with Scree Filter App. That app is awesome and often use it solely for brightness control because it has full control and can dim it to basically full black if wanted. Which is MUXH lower then stock control. Fyi I use my phone a LOT more at night or in dark environment thus allowing me to dim screen HEAVILY yet it still is actually plenty bright with ample contrast in dark environments to do everything. This saves on my battery HUGE!
3. I use LTE when needed and GSM/HSPA+ when not. Seldom turn of mobile data altogether. I do turn off wifi when out and only using mobile data.
4. I use Screebl app to have screen turn off when not in use. Its great liitle app. Basically let's you turn down screen timeout to 15 seconds or less so screen is never unnecessarily on but it always stays on when in use due to the accelerometer and it knows when the screen is not flat on table! Its very annoying when browsing or doing stuff where screen isn't touched for long periods and the screen goes to sleep! But this stops that! So its always on when upright or in use and when phone down it turns off immediately.
5. Very important step and can take some time and research but making sure to keep partial wakelocks and apps keeping device awake to a bare minimum! DEEP SLEEP IS VERY IMPORTANT TO SAVE BATTERY! You basically want it to go into that every time your screen goes off and to stay in it uninterrupted for as long as possible. And many users phones are NOT making it into deep sleep due to partial wakelocks and they don't even know it or how to fix it. Not getting deep sleep can unnecessarily kill your battery!
I use a few tools here: Better Battery Stats/GSAM Battery Monitor/Battery Monitor Widget from within System Tuner Pro (which is my also my main and highly recommended tuner app for CPU oc/uc and UV,etc.).
These apps really help to determine what, if any, apps are causing partial wakelocks ( displaying in wake number amounts and overall wake time) allowing you to determine what to do to fix the problem and let the phone gets as much battery saving deep sleep as possible.
6.I'm not big on auto app killers and actually recommend against them as Android ICS does this already very effectively but do keep in mind that the more active background memory that is used, the more battery the battery is drained. So I personally kill unnecessary apps myself from the background whenever possible to save a little battery here and there. Using the apps listed above in #5 can really help to detect a nasty background app or service that is quite possibly unknowingly using a ton of CPU and/or memory, thus draining more battery and also often just slowing down your phone!
7. For those who can use it Airplane Mode is a big saver! Try overnights if wanted as long as missing notifications, emails, calls, updates, etc is alright for you. I seldom use it but it does help.
8. I almost never use my Bluetooth and GPS but when I do that is the ONLY time they are on. They get turned off immediately and really be careful with the GPS in particular because you might be surprised how many things on your phone will use it in the background, sucking your battery!
9. Be careful with sound and vibration levels. Haptic feedback too. I don't do much here but its anotherctip nonetheless.
10. Lastly is treating and charging your battery right! I found an amazing site linked down below in a couple of articles that really explains these batteries and how they work in a very in depth technical level this is still not too hard to follow. Aside from the two links I posted check out the others on the left menu as there is a ton of useful and educational info!
http://batteryuniversity.com/learn/article/how_to_increase_the_runtime_of_your_wireless_device
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
OK I've rambled on waaay too long here. Maybe I'll take this and post a battery savings tips thread with it lol. "10 points"!
Btw I've just received both my 3300mAh and 4400mAh capacity batteries. So I have much testing to do on those too and I plan on reporting back on them as well. Also with screenshots for data and proof...I can and will also post screenshots for all of the numbers and stats I've posted here today with my personal phone/battery accomplishments.
Hope this helps some of you out there because yes this phone can be known for terrible battery life but it CAN be tweaked to SUBSTANTIALLY IMPROVE that life to high standards and keep up with the best of them!
Sent from my SGH-I747M using xda premium
On Stock battery - Kyan Rom/Ktoonez kernel (at this moment)

Seems about right. My phone is completely stock and if I really wanted to I could even use it for 2 work days. I usually charge it over night though. I used it for 2 days though while at work, and with 3 hours of screen on time I was down to 7% battery. Around 40 hours on.

I was stocked rooted using Sammy kernel. On demand BFQ. I'll try on demand noop and see if that helps. My screen was about 35% brightness.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Can I hijack a little here? My battery seems to be atrocious. It was okay stock after my first 3 full charges I was getting about 12 hours and 2.5 screen time.
Here is what I've done with my phone since:
Flashed to debloated stock Rom
disabled remaining unneeded apps (example ATT wifi app)
disabled Wifi
disabled bluetooth
disabled GPS
disabled GPS autorun states
disabled 4g
disabled autobrightness, set to 15%
disabled location reporting
disabled Push email with Exchange
disabled Motion
disabled auto google backup
disabled keytones and vibrate on all button presses
disabled touch key lights
disabled Svoice
disabled streaming on googleplay, only plays from memory card
disabled Google Now
fixed the cell standby bug (even though it may not impact battery figured wth)
Uninstalled FB
Set all Autosync accounts and email to sync only once per day
No widgets (only Google play music, Smemo note, flashlight, and folders)
Running save power mode for low power screen, no haptic, and auto adjust screen to blacks
Running mostly black wallpaper, No live wallpaper.
Running medium intensity vibration
I ran battery stats and got a lot of wakelocks from googlemaps and exchange so I disabled the push email and set it to once a day. Google maps I disabled latitude, and shut down the autostarts with gemini.
It's getting to the point where the phone is basically a dumbphone just so the battery can make it while it sits next to me at work. Today I have 48% after 8 hours and 50 minute screen time and 20 minutes of google play (only playing from on SD card not streaming).
Any ideas? It seems like I'm getting less than average.

All I did was also flash debloated rooted stock. Set to top out at 1.5ghz power save on. On demand BFQ schedule. Screen brightness as low as I can to still read. And got 32ish hours. I'm going to try OnDemand and noop like the other guy said and UV a lot more and see how close to 40 hours I can get
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

chrisj22 said:
All I did was also flash debloated rooted stock. Set to top out at 1.5ghz power save on. On demand BFQ schedule. Screen brightness as low as I can to still read. And got 32ish hours. I'm going to try OnDemand and noop like the other guy said and UV a lot more and see how close to 40 hours I can get
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Can u link me on the bfq? Having troublefinding what that is.
Also, is that the built in power save that limits the processor or some other software?

I believe if you flash Sammy kernel it has bfq. I am on task's CM10 and kernel and battery life seems poor compared to CM9 or stock rooted
Sent from my SGH-I747 using xda app-developers app

How low can you go with screen off?

Having some major headaches with my Note 2 right now. I'd previously had System Tuner set to cap screen-off frequency at 800MHz, with the pegasusq governor still selected. That was causing heavy drain (1-2% per hour) while idle, so I tried yesterday evening to scale it down to 200MHz with the powersave governor for screen off. It worked in the sense that my battery stayed flat at 67% overnight, but the phone took forever to come out of sleep so I could turn off my alarm clock, and then it started some type of fresh torment where it would freeze at the lockscreen and need a battery pull to reboot.
I switched the frequency to 500MHz this morning, but it's still locking up. Struggling to boot, too. I'd really rather not go back to 800MHz and pegasusq, but will if I need to. How do you guys have your screen-off behavior set in System Tuner, and has it caused you any problems? I'm on stock rooted, by the way, debloated by myself a while back.

T.J. Bender said:
Having some major headaches with my Note 2 right now. I'd previously had System Tuner set to cap screen-off frequency at 800MHz, with the pegasusq governor still selected. That was causing heavy drain (1-2% per hour) while idle, so I tried yesterday evening to scale it down to 200MHz with the powersave governor for screen off. It worked in the sense that my battery stayed flat at 67% overnight, but the phone took forever to come out of sleep so I could turn off my alarm clock, and then it started some type of fresh torment where it would freeze at the lockscreen and need a battery pull to reboot.
I switched the frequency to 500MHz this morning, but it's still locking up. Struggling to boot, too. I'd really rather not go back to 800MHz and pegasusq, but will if I need to. How do you guys have your screen-off behavior set in System Tuner, and has it caused you any problems? I'm on stock rooted, by the way, debloated by myself a while back.
Click to expand...
Click to collapse
I don't use system tuner, but in setcpu my screen off profile is set for 200-500 with pegasusq/cfq. I use almost no battery when my screen is off, and the wake up time is no slower than stock.

P1 Wookie said:
I don't use system tuner, but in setcpu my screen off profile is set for 200-500 with pegasusq/cfq. I use almost no battery when my screen is off, and the wake up time is no slower than stock.
Click to expand...
Click to collapse
Thanks for that. I had to restore (luckily I'd done a Nandroid yesterday!) because the system wouldn't boot past the Samsung splash. I've been anti-Juice Defender for a while here, but it seems like a decent chunk of the problem with my battery has been wlan_rx_wake, most likely caused by network traffic. That's what I get for letting my wife share my phone's wifi router instead of leaving her on the house.
Much as I hate to do so, I've put JD Ultimate back on my phone in hopes that its control over wifi and data will prevent those wifi and data wakelocks from happening. Hoping that 500 max with pegasusq (I'd put it back at 600 after restoring) will alleviate things.

temperature range

Are there any working cpu temperature monitoring apps out for the G3? The two I've used both say the chip is running at a minimum of 60C. That can't be possible. My GTX770 doesn't get that hot. I know there is no active cooling but still, the phone is barely warm to the touch and barely gets close to hour when playing a game or something.

johnomaz said:
Are there any working cpu temperature monitoring apps out for the G3? The two I've used both say the chip is running at a minimum of 60C. That can't be possible. My GTX770 doesn't get that hot. I know there is no active cooling but still, the phone is barely warm to the touch and barely gets close to hour when playing a game or something.
Click to expand...
Click to collapse
Mooncakes' CPUTemp works and has alarms. Give it a go.

Thats the one I'm actually running. When it's sleeping, it goes down to 35C, but shoots up to 50C when it powers back on.

CPU Temp in Statusbar. It's an xposed mod.

I use system tuner. Programmable widgets.

Also trickster mod shows both battery and CPU temps on the first page.

Skizzy034 said:
CPU Temp in Statusbar. It's an xposed mod.
Click to expand...
Click to collapse
I actually put this on too so I could see it at all times. Does anyone know what the safe temp ranges are?

johnomaz said:
I actually put this on too so I could see it at all times. Does anyone know what the safe temp ranges are?
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I use the colored temp setting instead of auto. I set the red to come on at 61 C. I've seen the CPU reach up to 84 for a couple seconds right after reboot.

Skizzy034 said:
I use the colored temp setting instead of auto. I set the red to come on at 61 C. I've seen the CPU reach up to 84 for a couple seconds right after reboot.
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Here are my big temp apps:
http://m.imgur.com/rHd1VLN

johnomaz said:
Here are my big temp apps:
http://m.imgur.com/rHd1VLN
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Click to collapse
Awesome. I didn't know there was an app that showed all the temps per app. Is it in the Play store?

Skizzy034 said:
Awesome. I didn't know there was an app that showed all the temps per app. Is it in the Play store?
Click to expand...
Click to collapse
That's the same app that I use as well, called CPU Temp. I got that with an active screen temp display that can be moved anywhere on your screen and is a top layer display. The only caveat is that it seems to mess up Lux, as it's a live display, it doesn't allow Lux to dim the screen as much as it usually can, it dims it more so than the stock slider, but not as dim as it can be with the live CPU display taken off.
I also have Temperature Guard Free to always show my battery temp at the top, as well as Cell Signal Strength -dbm (for my actual, real time signal coverage) and Internet Speed Meter Lite (to show my active data speeds), all with persistent notification displays.
That way, with a glance, I can see all my phone's info, temps, speeds and signal at a glance, for full, real time data gorging.
The Internet Speed Meter app is good, because whenever Tmo's data connection stalls, I can check to see if it's actually dribbling a connection or it's just stalled and needs to be reset.

cpu going nuts for no reason

I'm on stock, rooted, s-off
my device is getting extremely hot during normal use.(i dont play games at all, just whatsapp, facebook, news etc..)
sync is off, auto brightness.no google location reporting and history, no google now or history.
and using bbs to see what is going on ,i have no wakelocks and looking at battery screen, screen on time and awake time are almost identical.so nothing is keeping my device awake.
but for some reason, when the device is idle, the cpu goes nuts!
i installed cpu status bar xposed module so i could monitor cpu on real time, and i see the device jumping allot from 300mhz to 960 and 1000+ for no reason.(without touching it, and no apps running).when i touch the screen it scales to maximum.
it drives me crazy because i dont understand why the cpu behave like that.there is no logical reason for cpu going to max when i'm typing text.
its unbearable, cause its getting really hot while i hold it.
i have tried various kernels(elementalx, skydragon, faux, ionx, hacker kernel, but all of them shows that behavior.
on my old i9100, i never got that behavior, ondemand governor was perfect and i could reach 4 hours of screen on time.with the m8, i can barley pass it , going for 4-5 hours, because its draing too fast.
any suggestions?
*EDIT*
tried a factory reset, and i just installed xposed with cpufreq status bar module, and the device is still going nuts.WTF?

Can I ask... are you sure this is abnormal? I mean, are you seeing ill effects? Is the device laggy? Is your screen-off battery time awful?
All OS's do stuff in the background, and "idle" doesn't really mean anything at all to be honest -- even when you "don't have any apps running" there are apps running, and you'll always see the CPU cycle from idle to low speed to high speed if you're looking for it.

thebobmannh said:
Can I ask... are you sure this is abnormal? I mean, are you seeing ill effects? Is the device laggy? Is your screen-off battery time awful?
All OS's do stuff in the background, and "idle" doesn't really mean anything at all to be honest -- even when you "don't have any apps running" there are apps running, and you'll always see the CPU cycle from idle to low speed to high speed if you're looking for it.
Click to expand...
Click to collapse
i know there are background process and apps, and i don't except the device to stay at 300mhz all the time, but its quite annoying to hold on to a device and feel its temperature rising to insane levels without doing anything fancy with it.just texting.and every touch ramp the cpu to the max frequency, its weird.and unnecessary.
i don't know if its normal behavior, as i mentioned, my old i9100(galaxy s2) would not act like this. and i could get 4 hours of screen on time, and here, i get 4-5 hours max.it dose not seem logical.
I'm not using lte of nfc or BT.my reception is full(both wifi and cell).
i just want to know if this a normal behavior? anyone else having this heat buildup on light use?

I have a similar problem there on M8S. I killed half the background tasks, disabled syncing, auto backups, and then I open FBreader(or any other app) at 30% brightness and all the cpu cores go to 50 degrees C, heat up my battery to 43 degrees C. It results in loss of 40% of battery charge in just an hour. With screen off my device usually consumes 1-2% an hour. Whatever I do, I have never seen at least one core sleeping, they always work at 600-900MHz.