Develop Bugs

6 days of battery. (updated June-04)

Motorola Defy 6 days with a single charge.
Connected to network for phone calls and to wireless lan, wireless sleep policy: Never sleep. Only 2g. Getting Gmail notifications 24/7.
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As seen in the graph, i didnt use the phone much, just the 6th day, used it for 5 hours installing apps in the market and draining out the last 20% juice, which could possibly add more than one day and get the full week
I have China Unicom 1.11 (Froyo 2.2.1) *Now i have China Unicom 2.10 (Froyo 2.2.2) Same results.
Edited /system/build.prop and increased value of dalvik.vm.heapsize=42m
setvsel 18-300 30-600 40-800 (Underclock starts at boot to save lots of energy)
Wireless Lan policy set to never sleep (incredible but it actually increases battery life)
With stock dialer to record calls
Removed all screen widgets
I backed up everything system/user apps with titanium backup root
then i use titanium to safely remove system apps and restore some if something fails:
Removed:
VPN Services 2.2.1
Visualization 1.0
Voice Search 2.0.2
TTS Service 2.2.1
Tilemaze
Sudoku
ContactdUnconnected
Social Networking
Social status
Social messaging
Social messaging service
Messenger 6.5.0
Sinaweibo
shop4apps
QQ
News 2.2.1
News and Weather
Mobee
Maps
FOTA
Adservice
Motorola Photowidget
Landlord
Maps
I use:
Launcher Pro (instead of stock blur launcher)
OSMonitor to check which apps eats the most; and never install something that i foresee im going to use only twice times a week but starts at boot an run 24/7
BatteryMonitor widget to draw battery graphs
Setvsel to underclock
Gallery++
Rockplayer
Vplayer
Ebuddy + Mercury for msn
Sound Recorders
Colordict
SoundHound
Zedge
Etc.
None of them starts at boot and i dont use task killers,
I did some testing, the more you use the phone the more draining because of the screen 50%, radios are the next, gps, and then cpu.
The best way to afford battery is, you can't save much energy really, but the important is when you have the phone in your pocket in standby state which is most of the day, to get it to drain the less possible. When in pocket you dont need 3g, gps, or some other stuff, turning it off is good, sure there are apps in the market who does this automatically.
In my graphs its 0.5% battery every hour, in standby for 24h it drains 12%.
Other roms drains 1%-2% per hour, that is 24%-48% a day. In standby mode!!
I used barebones for a few days, and it drained 5% per hour in standby!! 5 hours in my pocket = -25% battery! or 100% in one day; I dont blame barebones, i just dont know what happened, what is sure my cpu was limited to 300mhz while screen was off. (setvsel) and i noticed no apps was draining more cpu than they should. but maybe some app avoided "deep sleep state"
1 hour duration call is 10% of battery for me with this rom. if you can minimize the drain while the phone is in the pocket, the best.
I have a theory this is possible because of the deep sleep state in this rom is working a lot better than in others. Deep Sleep = CPU shuts down for a period of time, and when some counter reaches zero (apps set up counters all the time) then cpu is awaken and it does its job.
In a Rom working well, you should get lots of this system messages (you can view then in OSMonitor.
<4>[52286.366027] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
<6>[52286.393585] PM: Resume timer in 42 secs (1402077 ticks at 32768 ticks/sec.)
Widgets and annoying apps who upgrade itself every 60 secs disturbs this sleep and drains more battery.
With barebones 1.5.1 i got no sleep logs at all (i dont know to blame barebones or some rogue app disturbing the phone's deep sleep) if someone notices, please let me know.

Details please
My DEFY in standby takes about 2% battery on hour. This subject is very itresting for me.
Maybe you write some details, which rom you use, what crapy stuff you wipe? What ap. you have instaled and use?

wow 6day of using.by the way could u elaborate more on your daily usage.as my phone can last 3 day (eclair)with minimal use without play or surf.

congrats
My DEFY made it for 3 days... but I'm using it alot so I'm fine with that Had a PalmPre before and the Pres battery last for 8 h with only 2g turned on...

eyezum said:
wow 6day of using.by the way could u elaborate more on your daily usage.as my phone can last 3 day (eclair)with minimal use without play or surf.
Click to expand...
Click to collapse
Almost no calls, only alarm is set, i just pick it up when i hear the notification sound for sms or emails, read them fast and i go back to my business. The last day i used it consistently downloading stuff from market and executing apps for 5 hours, to spend that last 20% (i wanted a full charge nextday) so it could have been 7-8 days.
But eclair is not as optimized as Froyo. You should upgrade to gain some more speed / battery life. And i think the most important stuff for battery life is setvsel + wireless + 2g
I first used setvsel long time ago, and noticed 24-48 hours increase between charges, and after the wireless trick, i noticed another + 12-24 hours increase in battery life. (these are aproximations because unfortunely i didn't make any test)

Automatic sync drains alot
I get my DEFY up to 3 days when I'm on roaming cause the automatic sync is deactivated. If not it lasts only 1 day with "similar" using profiles.
Does anybody know if the DEFY switches to 2G when auto sync is deactivated? I use Widgetsoid to do so.
Thanks,
hartmuna

My Defy needs charging every 24 hours - I am a low user.
My sons Defy needs charging TWICE in 24hours - he is a medium to high user.

6 days is pretty impressive but with no to little use kind of defeats the purpose of the phone. Right now, I am using jboogies liquidarc (which is sweet!), I use my phone regularly (phone calls/texting, wifi/internet, gps, games, etc).
I am 84 hours in with 30% left. When I first got the phone before I started flashing custom roms, I'd usually charge every night or at most 1 1/2 days in...now I nearly forget that I actually have to charge the dang thing

Mine has done 25% of the battery in 24 hours, it is a stock SIM free UK Defy running 2.1 and launcher pro rather than the blur launcher.
Usage over the last 24 hours is:
mobile standby 23hours 58 minutes.
phone idle 22 hours 18 minutes.
display 1 hour 39 minutes.
wifi 38 minutes.
I have used it for twitter, facebook and to collect emails over wifi only, the phone is set to 2G only. I cant recall making any calls but i have sent around 100 texts and MMS. Only widget i have running is battery monitor.

I use the app "Timeriffic" to:
-send my phone automatically in flightmode at 11pm
-deactivates flightmode and deactivates sound at 6am
-activate sound at 10am
At 10am I am awake in 99% of the cases. It deactivates flightmode at 6am so I can take a look at the LED when I wake up.
Other possibility to save energy is to deactivate vibration completely.

Very impressive
thanks for sharing
P.s
there used to be a thread where people wrote what's a must in motorola services and what can be uninstalled.

thanks very much，but it's a little unblievable

Why do you think it's "little unbelievable"? I've also managed to obtain 4 days with moderate use (around 10 hours of radio and music listening, 30-45 minutes talk-time). The secret is to undervolt your terminal using SetVsel, to remove the bloatware and set network on 2G.

He got 6 days because he only downloaded stuff in wi-fi. I've done plenty of testing, and what kills the battery is having open mobile data connection (3g more son than 2g). You can get a lot of extra juice from switching 2g/3g and much more by killing the mobile data connection. (widgetsoid switchers will help you with it).
Once I noticed this (I stayed home a whole day and had 90% of battery, thanks to wifi), I was happy to know that my phone was no different to those with super long battery life. That said, I think that as long as it goes for whole day without problems, its fine. And with setcpu and a blurless rom, thats easy to get.
Just find the right balance between battery life and features for you and enjoy your phone!

8 hours flight mode 1%

My Defy is charging every night , max battery life is 36h

With UltraJuice on, after 48 h since unplugged, this morning it still had about 30% of battery. I charged it for like half an hour not to have surprises.
Usage: about 30-40 minutes of talking, 3G with data off (probably 2-3 syncs over the day), about 30 minutes of wireless (syncing), some 30-60 minutes of Angry Birds, etc (maybe a few camera shots, a few USSD requests, looking at the clock, searching in the agenda). Ringer at 100%, vibration on, screen on auto.

quzo said:
My Defy is charging every night , max battery life is 36h
Click to expand...
Click to collapse
same situation here

I treied to use it 2 days but it was empty in school the seconed day..
noe charging every night...

ziffos said:
My Defy needs charging every 24 hours - I am a low user.
My sons Defy needs charging TWICE in 24hours - he is a medium to high user.
Click to expand...
Click to collapse
My one too., I need to charge everyday even my call usage less......

[Q] Battery life - Stock, CM7, Pays

Hi there,
So I'd my Defy for a little over 2 months now and I have used the mentioned ROMs with it for at least a week each. It first had Eclair, I promptly changed that to a Pays version of Froyo and now i'm using Quarx CM7.
A lot of my friends have this phone and report battery life of over 24h. They do work in places where they can connect their phones to their laptops and car charger, and they are lighter users than me.
But I'm a med student so I get out in the morning around 6 am, unplug my phone and go to the hospital returning home around 8pm. 14h later my phone is already at 33% charge. I keep wifi turned off, 3G off and use my phone to check MedScape(a medical info repository) and e-mail/facebook 6 times a day and listen to music for 4h.
Is that a good battery life? i mean, for a new phone. I imagine that if I let my 3G i won't get to the middle of my afternoon without needing to recharge.
Around the forum I read about people with OVER 48h of battery life, HOW?
thanks in advance.
Also, as I know it will be asked. My signal reception is flawless all through my working environment.

The .sbf you flashed (for the kernel) is apparently a big factor in batterylife, which did you use under cm7 ?
Which version of cm7 are you running?
Also are you using setvsel?
My settings are 300/23, 600/33, 800/43, and i have gotten almost 5 days battery use on a single charge, with
-texting for atleast 48hr time, intervals of short(10min) periods as you would expect
-maybe 20 mins phoning
-wifi on for half the time when i forget it overnight etc(my profile disables wifi on screen off however-good for light, but battery drain if you lock phone a lot)
-Get the following: OSmonitor, Battery monitor widget.
These help to track what apps eat battery, and kill processes with minimal(1%) drain, that if you arent using then you may aswell take all the battery back that you can
What are your display settings? eg auto brightness, renderfx etc
Thanks

software
I'm using the latest CM7 by quarx 5.1 and for base i'm currently using 3.4.2-177 nordic Blurless.
I wasn't currently using any undervolting settings to make a baseline screening of the phone with CM7 but i'll try yours and install the apps you've mentioned.
i'm using auto-brightness because of the bugs involved in disabling them in CM7 5.1. And haven't messed with renderfx so far.

Ok firstly i have only tested on 4.0, 4.1 and 5.0 so these suggestions are very likely to work but if certain settings are different in 5.1 then they may negatively affect you- just a thought
Undervolting is actually incredible on cm7 and works a charm, its still super responsive and load times are still less than that of any 2.2 i have tested WITH overclock
Start on about 300/600/800, 30/45/50 and go down marginally-different phones may have different yields to this due to apps running, previous cpu stress etc
(Remember to untick 'start on boot')
Also, the medical database you mentioned- does it contain any 3d renders etc?
This may require you to raise the voltage a little to keep it stable for anything you may to run aswell-- all the apps i have tested such as angry birds, 3d racer games work perfectly btw
Ok, there are extra options that allow you to further change the auto brightness inside the CMsettings under >Display>Automatic backlight
You might wish to experiment if you have time (decrease sensor check-times, lower overall brightness etc), however it likely isnt worth pursuing as the new Quarx beta shows brightness fixes in the changelog already, so just wait is my advice if you are short of time
Ooh and renderfx seemed to drain my battery more on any of the n1 settings, however it may be mix/match to get it right

Hum, I've had bad experiences with undervolting in 2.2 but I'll be sure to try it.
As far as medscape goes, it's just text, no image whatsoever it's just a big list with descriptions "acetaminophen - what does it do, how, dosages and stuff" really useful though
will post back when I have more info from the apps you've mentioned. So far I had used watchdog and it hasn't barked at any of my apps

As long as you take it slowly, undervolting is no problem- also try and minimize the amount of useless apps you have, since many of them run in the background by default without a way to exit them, meaning you constantly waste resources on them and thereby limit the amount of UC/V'ing you could acheive.
Ok thats cool, i was just curious as you clearly need/use that app often
Alrighty then, hopefully you can get some better battery life out of it -good luck

i don't actually have that many apps installed
3g watchdog, only on when 3g is.
angry birds
battery monitor widget
chrome to phone
documents to go
dropbox
evernote
facebook
epicurious
foursquare
gmail
goggles
mnote
msn mercury
music junk
music
pulse
sms backup
soundhound
talk
wifi manager
youtube
well, not that I've written it out, they are quite a few.

He probably means you should use something to kill useless apps running in the background. Look for Advanced Task Killer at the market and install it so you can kill apps that are running in the background but that you're not using.

@Behemia 5 days is awesome in my experience, and you are using your device the same way I am
could you please tell us which kernel are you using (savaged Zen maybe?) and which baseband (if you changed it)?
thanks!

im using cm7 with 3.4.3-11 kernel, undervolted to 300/18-600/30-800/45, kill apps with es task manager quite a lot, 3g or wifi is constantly on, and brightness is set to medium (for some reason auto brightness doesnt relly work for me), and i still cant get one day out of it. battery calibration helped a bit though (i recommend that app to everybody having battery life issues!). is that normal?

Report
So, I've done some of the changes proposed. Undervolted to 300/28 600/41 800/47. Installed Battery monitor Widget, OSmonitor left the phone with 3g off and wifi off when not in use(most of the time) and right now I've got 1% of battery left. That's 1d09h30min after unplug.
Below are the times in ms from the applications that I've used according to battery monitor widgets.
sms 814409
facebook 518805
contacts 355178
dialer 212996
gmail 195103
winamp 67868
medscape 2728
And here battery use report according to system
display 21%
phone idle 18%
stanby 17%
voice calls 15%
OS 7%
media 4%
winamp 4%
gmail 3%
facebook 2%
I'm not saying that 33h isn't good. But my use in this time has been way below my average for myself and the way below most of what I see described here. Plus I don't see any bloatware running nor I do see my apps hogging my battery. Facebook and Gmail push notifications are set to occurs over 2h apart.
Any ideas?
Also, as I finish this thread the phone finally vibrates and dies. Let's put it back to charge and look for more ideas.
thanks in advance everyone.

@lionheartpl
which kind of sim card do you own? i mean an old 64k or a brand new 128k? i upgraded mine from 64 to 128 due to a mobile operator change and my battery usage (same mod, same apps, same usage, same baseband) dropped from 2-3% hour usage to 1% in more than 1 hour. So battery usage has dropped a lot...

Running stock UK 2.1 i could get 4 days standby if i was just texting and a few calls. with the stock UK 2.2 undervolted to 300/22 600/32 1000/52 i can get 5 days easily but i cant see the point in it cos you dare not really use it, i would rather drop down to 1 or 2 days and give it some usage.

Hello everyone,
I'm getting a very good perfomance with the barebones froyo 1.5.6, check this behavior at night:
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That's like 2% loss in almost 8 hours!!!
Right now I am using the version 1.5.1 because I was told it has a better perfomance than the 1.5.6. I'll post my results in a few days.
Also, I use my Defy to be connected to windows messenger network all the time. I'm trying a strategy in order to not drain battery so much:
http://loqueselocomparto.blogspot.com/2011/08/messenger-en-android.html
Check it out

Even i m not getting a good battery life on CM7 RC1 V1, latest Nightly(9th Aug)
using base band switcher as i m from India
i lost around 18 to 20% every night between 12 to 8am.
over with minimum usage i can get 24 hrs thats witout any music and games, call for 30 mins
not sure what to do
some one please help

I can get about 2 days out of a charge. I am using 300/35 700/42 1000/50 and have had no problems. I recommend using battery calibration! A trick that I have learned is to let it charge to 100% do a battery calibration and then leave it plugged in for a while (30 mins). I have my wifi on all the time and run the smartass profile in settings.
good luck!
Chem57guru

Is anyone draining at 1% per hour in sleep mode & how are you doing it?

Is anyone draining at 1% per hour in sleep mode & how are you doing it?
I've read some folks draining at less than 1% per hour sleeping. I'd be happy if I can achieve 1% per hour sleeping.
Anyone getting this or better? If so, share with us your secret!
Here's what my phone is like:
LTE version
Kang, milestone 3
Franco 16.2
max 1000, min 350
no undervolt
no solo cpu mod when sleeping
wifi off
gps on
bt on
My best performance is about 1.5% when sleeping. I charged up my phone to 100% and then unplugged it and let it sleep overnight. 7hr:45min later, woke up and it's at 88%.
I did wipe battery stats when switching ROMs, so it's fresh.

I unplugged my phone last night (100% charge) and 8 hours later this morning it was at 94%. So a little under 1% per hour.
Using stock Android 4.0.2 GSM. Wifi was on, Bluetooth off, GPS on, Sync on. Sadly no secrets to share, been pretty happy with the battery life though.

I have stock 4.0.2 and i get even lower numbers than that.. last night i charged it up to 100% and when i woke up (8 hours later) it was down to 96%.
(gsm)

where did you get the franco 16.2?? ^^

I lose about 0.5% per hour in idle. After 8 hours, I have about 96-95% battery left. This is the GSM nexus with the official 2000 mAh extended battery. Not sure if you have GSM or LTE.
Kang, milestone 3
Imoseyon's Leankernel 1.7.4
max 1200, min 350
stock undervolt that is on the kernel
Interactive X governor
wifi off
gps on
bt on
I get around 4 hours of screen on time.

Make sure anything you have syncing is doing it at a moderate level, when I set up my two email accounts they were set to push and sync every 15 minutes, both are way too much for what I need email for so I set them both to an hour.
Also, changed twitter to only manually sync being that it only takes a couple seconds to due and saves the phone from unnecessarily turning on from sleep.
Don't know if this helps but maybe try turning NFC on if you don't use it?
Disable Facebook contact sync as it doesn't work with 4.0 anyways.
If you can, disable bluetooth, same goes with GPS/Location services.
If you have fancy widgets/beautiful widgets, see how often they update location/weather.
Sorry if it seems like every other point here is just checking what is syncing and what not but when your phone is sleeping those are really the only things that will effect battery life.
Edit: Wiping battery stats has been proven to not do... Well anything.

qtx said:
I have stock 4.0.2 and i get even lower numbers than that.. last night i charged it up to 100% and when i woke up (8 hours later) it was down to 96%.
(gsm)
Click to expand...
Click to collapse
same with me ... using stock 4.0.2 ... drain is about 1% per 2 hours

I drain 1% every 2-3 hours. So after 8 hours i'm at 96% overnight. This phone has superb idle drain. This is with wifi connected, 2 gmail accounts synced, 1 calendar, contacts and picasa, gps is on. But i do not have facebook app installed. I am stock 4.0.1 and dont have many apps installed, only what i use.

mine is great when idle but as soon as I start using it it drops precipitously any ideas or fixes?

AndreaCristiano said:
mine is great when idle but as soon as I start using it it drops precipitously any ideas or fixes?
Click to expand...
Click to collapse
Sadly, lower the screen resolution is probably the easiest way that will notch the best gain in battery life. These screens require a lot of power especially at their brightest settings.

Sign out of latitude...
so key to good battery life

I have the GSM Galaxy Nexus running stock 4.0.1 and I consistently lose 4-5% in 6-8 hours overnight with...
- WIFI on
- 3g/4g on
- GPS on
- bluetooth off
- NFC off
- syncing 2 emails, 2 calendars
- lightflow running LED notification for max 2 hour but on silent (not uncommon for a couple of notification go off during the night)
- beautiful widgets with 1 hour sync
- no effort taken to kill facebook or other backgroung apps.

Try out the new 4.0.4. You're standby drain will go down considerably.

OP, are you on a GSM or CDMA Nexus? Are you on 3G only or LTE/3G?

Ravynmagi said:
I unplugged my phone last night (100% charge) and 8 hours later this morning it was at 94%. So a little under 1% per hour.
Using stock Android 4.0.2 GSM. Wifi was on, Bluetooth off, GPS on, Sync on. Sadly no secrets to share, been pretty happy with the battery life though.
Click to expand...
Click to collapse
Yep. That's about the same exact thing I get on a day-to-day basis with the same settings you mentioned. In addition, I don't think I've ever turned NFC off. So pretty much everything but Bluetooth stays on for me overnight.
Sent from my Galaxy Nexus using xda premium

Sounds like you may have a wakelock check your awake time com paired to your screen on time , if its considerably more then you may have some apps waking your device. For me it was Google maps so I disabled it for now till the update. I used betterbatterystas to find the wakelock. Now I get 3.5 hours screen on time and under 1% drain per hour
Sent from my Galaxy Nexus using xda premium

you guys realized that gps and bluetooth do not drain battery unless you are using them so it doesnt matter if they are on. GPS will only turn on when an app needs a lock and bluetooth wont use power unless its transmitting to another device. im not sure about NFC but i would think it works the same way. as long as you dont have anything syncing or losing reception at night then you should only lose about 5 percent in 7-8 hours. this is the case with most android devices that i've own.

best I have got is 2% loss in 7 hours...
running milestone2
-undervolted
-1200/350 interactive
-wifi on
-gps off
-bt off
-nfc on
-syncing gmail, calender, twitter, g+ and voice
-No active widgets
screen time is 4 hours if set manually (2000mah)
unless you are in sunlight, auto bightness is too high

neotekz said:
you guys realized that gps and bluetooth do not drain battery unless you are using them so it doesnt matter if they are on. GPS will only turn on when an app needs a lock and bluetooth wont use power unless its transmitting to another device. im not sure about NFC but i would think it works the same way. as long as you dont have anything syncing or losing reception at night then you should only lose about 5 percent in 7-8 hours. this is the case with most android devices that i've own.
Click to expand...
Click to collapse
Bluetooth searches for devices like Wi-Fi searches for access points. You kinda missed that...
Sent from my Galaxy Nexus using xda premium

ogdobber said:
best I have got is 2% loss in 7 hours...
running milestone2
-undervolted
-1200/350 interactive
-wifi on
-gps off
-bt off
-nfc on
-syncing gmail, calender, twitter, g+ and voice
-No active widgets
screen time is 4 hours if set manually (2000mah)
unless you are in sunlight, auto bightness is too high
Click to expand...
Click to collapse
Basically the same but
GPS on and stock battery
No twitter or voice, sync everything else, plus docs, picasa
1% in nearly 6 hours.
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Best tool, use betterbatterystats and reduce wake locks to a minimum
EDIT:wrong screenshot

Galaxy S3 Extend Battery Life..

Here is my battery life:
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From previous posts on Q&A thread:
My GS3 i747m lasts around 50-55 hours per charge cycle..
It is running stock Rogers GS3 ICS, not rooted, all stock. Battery is stock as well.
Not using LTE, using HSPA+ ("4G") with data turned ON with Sync turned OFF
(**NOTE: sometimes, the battery is drained due to poor reception, and the phone will use more power for the cellular signal.. In my case, my 3G connection in my area seems alright for the most part, about 1 bar less from full)
Power saving is turned ON. WiFi powersave is turned ON.
Moderated WiFi usage in 2.4ghz 802.11g-mode only.
Every night when I go to sleep, my flight mode is turned ON. (I sleep around 9-10 hours everyday, so the phone stays on flight mode for 9-10 hours a day)
In the morning, I turn the flight mode OFF.
Bluetooth, GPS both are turned OFF
Screen brightness turned 1/4 brightness
LED notification turned OFF
Also, I have a task killer killing ALL BACKGROUND SERVICES every half hour.
Without killing all the background apps, my RAM usage is around 600-700 MB out of 1.6 GB of RAM
Killing all the background apps brings the RAM usage to around 360 MB of 1.6 GB
Without killing background apps, my battery life is shortened even when the phone is on standby.
Do this, and your battery life is pretty good..

mms6 said:
Here is my battery life:
From previous posts on Q&A thread:
My GS3 i747m lasts around 50-55 hours per charge cycle..
It is running stock Rogers GS3 ICS, not rooted, all stock. Battery is stock as well.
Not using LTE, using HSPA+ ("4G") with data turned ON with Sync turned OFF
(**NOTE: sometimes, the battery is drained due to poor reception, and the phone will use more power for the cellular signal.. In my case, my 3G connection in my area seems alright for the most part, about 1 bar less from full)
Power saving is turned ON. WiFi powersave is turned ON.
Moderated WiFi usage in 2.4ghz 802.11g-mode only.
Every night when I go to sleep, my flight mode is turned ON. (I sleep around 9-10 hours everyday, so the phone stays on flight mode for 9-10 hours a day)
In the morning, I turn the flight mode OFF.
Bluetooth, GPS both are turned OFF
Screen brightness turned 1/4 brightness
LED notification turned OFF
Also, I have a task killer killing ALL BACKGROUND SERVICES every half hour.
Without killing all the background apps, my RAM usage is around 600-700 MB out of 1.6 GB of RAM
Killing all the background apps brings the RAM usage to around 360 MB of 1.6 GB
Without killing background apps, my battery life is shortened even when the phone is on standby.
Do this, and your battery life is pretty good..
Click to expand...
Click to collapse
Please stop killing background apps because it's really pointless. If you want to increase your battery life, the first step is to use BetterBatteryStats to diagnose wakelocks and ensure that nothing in the background is chomping up precious mAs while the phone isn't in use.
After that, disabling always-on mobile data is basically the best way to ensure that your battery is stretched as far as possible for use in standby.
When in use, only using LTE for when you really need the extra bandwidth will save a lot of battery. So will using all black wallpapers, using dark themes for icons, Touchwiz, and applications. Another really useful way to save battery is to use Samsung's browser background changer that you can use to make websites have black backgrounds if you need to save even more battery while in use.
Of course, after just eliminating partial wakelocks, you have to give up a lot of time and effort in order to reduce battery drain while the screen is on, while trying to reduce battery drain while the screen is off will require losing a lot of "smart" in smartphone.

i am downloading BetterBatteryStats !

[MM] Got Poor Battery Life? No Deep Sleep - Possible reasons, and possible fix inside

Like a lot of people I found myself with battery woes on the G4, at first my battery was comparable to my G3, if not a little bit better but over time, and certainly since MM was released, my battery life was quite frankly awful.
Long Story
I was losing power rapidly, even when I was barely touching the phone - so I finally decided to look into it. After carefully monitoring apps, wakelocks etc nothing looked out of place, everything was working normally until I installed my old faithful app - SetCPU, this is a nice basic app that just shows what your CPU has clocked too and how long it spent there in a given timescale and one thing alarmed me greatly. I was getting less than one minute of deep sleep in every 60 minutes the phone was running - now if I had been using the phone for 58 minutes of that hour I would expect this, only I hadn't!
I did more testing, and more testing and more testing but the results were the same, the phone barely entered deep sleep, and when it did it didn't stay there very long.
Now as I said, using all the other apps, and android stats, nothing looked particularly out of place and after a few days of trying everything under the sun to fix the problem I decided to go nuclear. I wiped the phone, installed no third party apps but setcpu and began testing. I left the phone for a period of 10 minutes to see what the deep sleep value was (looking for it to be somewhere between 80 and 100% of time, which it was!) and it seemed to be back to normal, working fine. So then I started to install my core apps, one by one running the same 10 minute test between each one, idea being eventually I would hit whatever app it was that caused me problems.
So I installed upwards of 30 apps, and everything was still fine, in 10 minutes of not using my phone I was getting around 9 minutes of deep sleep, which is what you would expect.
And then came facebook, now I know there are lots of reports of facebook being a bad app blah blah blah, but I have never seen facebook react like this before, and I don't know if it was marshmallow or a mixture of marshmallow and LG - but when facebook is installed my phone stopped sleeping again, at first it wasn't a huge change, but was noticeable it dropped to deep sleeping at about the 40% mark so I had 4 minutes deep sleep in my 10 minute test - force closing facebook made no difference, I tested it again and again, rebooted and again - same results.
I then installed facebook messenger, and my deep sleep dropped again, to about 20%.
I then uninstalled messenger - no change.
I then rebooted - back to 40%
I then removed facebook - no change
I then rebooted - back to 80+ %.
TLDR: The "Solution"
Now for some of you this won't be a solution as you will claim you need the apps, but there are third party alternatives out there that work pretty well without causing this issue.
Facebook (and facebook messenger) on stock MM builds (at least on the G4) causes the phone to hardly ever enter "deep sleep", this means it is always running a CPU clock, albeit the lowest setting, but it consumes far more power than it needs too especially when the phone is not in use.
After removing them my phone is now sleeping fine and my battery life is back to being very good - lost 4% in the last 8 hours (albeit idle, I was asleep), which is much better than losing 4% an hour that I was before facebook was removed.
Go give it a try, install setcpu, reset the timer close go back to your home screen then leave your phone for 10 minutes then check your deep sleep values, then try it after removing facebook (and rebooting).
Let me know how you get on.

Hold your horses!
You should try Amplify:
https://play.google.com/store/apps/details?id=com.ryansteckler.nlpunbounce&hl=en_GB
http://forum.xda-developers.com/xposed/modules/mod-nlpunbounce-reduce-nlp-wakelocks-t2853874
I have used it to disable Facebook services and limit the wakelocks and alarms to every 3600 seconds. Last night I had 5hrs of deep sleep with no interruption whatsoever.

dtective said:
Hold your horses!
You should try Amplify:
https://play.google.com/store/apps/details?id=com.ryansteckler.nlpunbounce&hl=en_GB
http://forum.xda-developers.com/xposed/modules/mod-nlpunbounce-reduce-nlp-wakelocks-t2853874
I have used it to disable Facebook services and limit the wakelocks and alarms to every 3600 seconds. Last night I had 5hrs of deep sleep with no interruption whatsoever.
Click to expand...
Click to collapse
only any use if you have root

So interesting...
Can you do those tests again after disabling the Marshmallow battery optimizing for Facebook app ?
Sent from my LG-H815 using Tapatalk

I was having these issues too after upgrading to MM. My battery life was appalling and Facebook was keeping the phone awake for hours at a time. I simply did a full factory reset, and then restored my phone from the most recent backup. My battery life is now excellent, even with Facebook and Messenger installed

There was a wakelock introduced with the new version of facebook about a week ago not sure if it is still relevant. It goes by the name of bugreporting service. Something like that. The same goes with FB messenger. I got pissed off with the official app because of this and got Metal instead

I don't run Facebook (never have) or any messaging other than Hangouts and battery is always great (2-3 days). If you don't need it...uninstall it.
Kindle app was always a great one for running constantly in the background for no reason. So I bought an actual Kindle and didn't use the app.

I totally agree with the OP, I started having the exact issues after I updated to the latest facebook and messenger apps and my phone was entering deep sleep at all. I removed them last night and its much much better now.

My girlfriend's g3 with mm gets this message lots of time
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my LG-H818 using Tapatalk

Until a few weeks ago, the Facebook app had a setting where you could choose the sync frequency and I was able to set mine to every 4 hours.
This setting appears to have disappeared now. Could this be the problem?

Nope. It's not the solution. I uninstalled Facebook but am barely getting 2+ hours of screen-on time on v20b.
A Redditor mentioned that some process called 'logd' is eating up resources and killing battery life. I used Terminal Emulator to verify it.
Sent from my LG-H815 using Tapatalk

logd is a separate issue that no one has quite worked out what is causing it - it is to do with error reporting, either from LG or Google apps.

That redditor here. Logd isn't actually logging anything when its CPU usage hits 16% (the problem). You can verify by running logcat in adb shell while watching cpu usage in terminal emulator on phone.
I removed logd by renaming the binary, it's over doubled by SOT from 1-2h to 4+h. As this is my first post on xda I can't link the thread I made on reddit about it -- but you'll find it on /r/lgg4 on the first page ("PSA: How to fix 6.0 / marshmallow logd battery drain (TWRP/root)")