Improving battery life - XPERIA X1 Android Development

Hi @all!
At the moment android kernel development for X1 is stalling, partly because most important things are working, partly because it is getting warm outside The biggest show-stopper for replacing WiMo is battery life. Everything under a day is not very usefull. This thread is dedicated to improve that.
What we know?
The X1-battery has a capacity of 1500mAh. My current WiMo can live with that energy for nearly four days with active data connection for emails, but without phonecalls. That is good.
To use android for every day it should last at least for one day. That means, the system should not use more than 62,5mA during standby. Atm it uses around 200mA, so battery is empty in under eight hours
What to do?
At first we have to know, what part(s) of the system are eating up the battery. "Know your enemy!" Then we can try to improve it.
How to do it?
Well, that is the interesting part. There is no "right way" to get this done. We need creativity. One way may be to activate and deactivate parts of the system and see how the energy usage changes. Or change the system clock.
With drlucky's great battery-driver-port we can see the current used by the system. It is as accurate as the WiMo-readings because it reads out the same hardware-chip for battery-monitoring. This can be used to corner the culprit.
Sadly android battery info does not contain a current-value. So the only way is to read out the kernel-log with dmesg-command. Maybe someone can create an app for this?
To get started, read this post. And please use THIS kernel image for battery tests, as it shows correct miliamp-values. That way we can compare the results. I am out of ideas for now. Here are some keywords to think about:
-How does WiMo save energy?
-How to easy access the current value in android?
-What programs are good for battery monitoring in WiMo/Android?
-What is eating up battery in android?
-How does power management works in linux/android?
-wakelocks

Great to see you back,
i'm not a dev but i guess one of the problems could be given by the 'speaker fix', that causes the speaker to be always enabled?
Keep up the good work and thanks for everything you've made possible so far.

vdelf said:
-How does WiMo save energy?
Click to expand...
Click to collapse
best drivers?cpu/hardware scaling?
i'm not a dev.... only a linux/ubuntu user...
but all the android devices have not a great capacity to save energy...

hope you can do something well =)

Great job
It's good to see people working on this project
i think the main reason for battery discharging is that the OS can not turn off the chipsets that it's not using...so they stay always on and consume energy
although i'm not sure about that but may be that's the case
All the best
Bis bald

i think, some drivers have a problems? it's impossible the phone/battery in few minutes are incredible hot... and this with: gps/off do not work, wi-fi/off.

Wakelocks
vdelf said:
Hi @all!
-How does power management works in linux/android?
Click to expand...
Click to collapse
An idea: We can look first and foremost in /proc/wakelocks to see if anything is holding locks to prevent the system going to idle.
If anything holds a wakelock, the phone will be running full bore all the time.
My phone is sick at the moment so maybe someone can check this out.

angusmcb said:
An idea: We can look first and foremost in /proc/wakelocks to see if anything is holding locks to prevent the system going to idle.
If anything holds a wakelock, the phone will be running full bore all the time.
My phone is sick at the moment so maybe someone can check this out.
Click to expand...
Click to collapse
Thanks, i just learned something new
Here is some more info on wakelocks.

I'm sorry, I'm not a dev. But, does the battery last few days for other htc phones with Android ported?
If not, maybe it's the way Android works when it's running from Haret. Maybe a ROM will make some things work... Who knows?
I can't wait to see Android fully functional on my X1. I really like Android, and with looks of X1, it will be the best.
Cheers!

Windows Mobile saving batter everytime when can. Things what using batter in last build of kernel for X1 and drying batter in some hours is:
-SPEAKER IS TURNED ON 24/7
-PHONE "LISTEN" EVERY KEY ON PHONE (windows mobile just "listen" and refreshing POWER BUTTON and over that button WinMobile backing everything in life)
-PROCESOR CLOCK IS 24/7 ON MAXIMUM
-AND IF I SEE GOOD CAMERA RECIEVING POWER FROM BATTERY 24/7 BUT NOT WORK
So lets extreme developing start

stefanACM said:
Windows Mobile saving batter everytime when can. Things what using batter in last build of kernel for X1 and drying batter in some hours is:
-SPEAKER IS TURNED ON 24/7
-PHONE "LISTEN" EVERY KEY ON PHONE (windows mobile just "listen" and refreshing POWER BUTTON and over that button WinMobile backing everything in life)
-PROCESOR CLOCK IS 24/7 ON MAXIMUM
-AND IF I SEE GOOD CAMERA RECIEVING POWER FROM BATTERY 24/7 BUT NOT WORK
So lets extreme developing start
Click to expand...
Click to collapse
+1 to that
Where did all the smart people went? (devvers)

Chaosstorm said:
+1 to that
Where did all the smart people went? (devvers)
Click to expand...
Click to collapse
i don't know but I miss them

In terms of speaker always on issue, the problem is that we are enabling it in the first place...
Code:
void enable_speaker(void) {
if(machine_is_htcblackstone()) {
gpio_set_value(57,1);
} else if(machine_is_htckovsky()) {
printk(KERN_INFO "DBG: enabling kovsky speaker...\n");
gpio_configure(0x41, GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
gpio_set_value(0x41, 1);
// now wait for GPIO 0x41=1
} else if(machine_is_htcrhodium()) {
//Needs userland fix
if(force_rhod_speaker)
enable_speaker_rhod();
else
disable_speaker_rhod();
}
}
Looking through the rhod code it seems there is an option to force rhod's speaker enabling when switching snd device to speaker - Which is disabled by default because android always leaves it on...
Perhaps we should look at something similar?

Code:
void enable_speaker(void) {
if(machine_is_htcblackstone()) {
gpio_set_value(57,1);
} else if(machine_is_htckovsky()) {
if(force_kovsk_speaker){
printk(KERN_INFO "DBG: enabling kovsky speaker...\n");
gpio_configure(65, GPIOF_DRIVE_OUTPUT |GPIOF_OUTPUT_HIGH);
gpio_set_value(65, 1);
// now wait for GPIO 65=1
}
else{
printk(KERN_INFO "DBG: disabling kovsky speaker...\n");
gpio_configure(65, GPIOF_DRIVE_OUTPUT |GPIOF_OUTPUT_LOW);
gpio_set_value(65, 1);
// now wait for GPIO 65=1 switched to decimal, ok?
}
} else if(machine_is_htcrhodium()) {
//Needs userland fix
if(force_rhod_speaker)
enable_speaker_rhod();
else
disable_speaker_rhod();
}
}
or is this not possible like this?
with force_kovs_speaker made

@Reversedhex
^Yes, exactly.
I am working next 5 days...let us know if you have any luck...
BTW; The code is from external.c

Great
Next thing !!!
-SPEAKER SOUND IS ON 40% ON MAXIMUM and NO CHANGES TO 100% IN LOUDNES, SO SOFTWARE PUSHING TO MUCH ENERGY TO SPEAKER
-OR SECOUND THEORY IS: SPEAKER IS ON 100% 24/7 and cant CONTROL AMOUNT OF ENERGY...
(this can't help a lot but everything is good )

_Sensible said:
@Reversedhex
^Yes, exactly.
I am working next 5 days...let us know if you have any luck...
BTW; The code is from external.c
Click to expand...
Click to collapse
oke ill have to set up a machine to test it because i have not yet done any work on this
I was looking for some information on how to do this while i stumpled on to this

angusmcb said:
An idea: We can look first and foremost in /proc/wakelocks to see if anything is holding locks to prevent the system going to idle.
If anything holds a wakelock, the phone will be running full bore all the time.
My phone is sick at the moment so maybe someone can check this out.
Click to expand...
Click to collapse
I have no /proc/wakelocks Any idea why??
On an Motorola Backflip i found that file...

vdelf said:
I have no /proc/wakelocks Any idea why??
On an Motorola Backflip i found that file...
Click to expand...
Click to collapse
Do you have it enabled in the kernel? You need CONFIG_WAKELOCK_STAT enabled to see it in /proc/wakelocks

Thanks! This option is not set in .config, i will try that!

Related

How to improve battery performance

This is a technic how to improve your battery life in htc touch hd
1 - disable any 3g @ data connection
2 - disable any incoming beam in connection setting
3 - customize the power usage in power setting
4 - disable gps option in gps setting [ recommendation ]
5 - disable any wireless connection in standby
6 - Turn off Bluetooth when not used
7 - Experiment with different Radio ROM's they actually have a big impact on the battery life, depending on your location.
8 - Use Lumos to control the backlight or set it to manual and turn it as low as you like
9 - turn on\off WiFi in specified times
thanks for mccune
this is only way i know how to improve battery life...
hope users here can share with me
thanks
but what if i want to use them all the time? haha.
nice idea though, if you disable them does that mean they wont work unless you re-enable them? or do you just mean "turn off"?
... or you could just leave your HD switched off all day long, using a 50 $ mobile... because if you switch off all those things that's what our HD would turn into...
Kidding, of course.
But why should you buy a 500 bucks pda-phone and not to use wifi, bt, gps and so on?
A way to optimize battery life, IMHO, is to use "clever" ROMs: that's it.
Bye!
and why not turn off for ever?
becoz touch hd battery drain is so quickly
Some people really are an expert in posting useless replies :S
If you don't access a WiFi network. Why in earth enable it?
For some people the tricks from the first post might be nothing new. But a lot have WiFi and BT activated even if they don't use it. So Core7x started a nice thread actually. But it should have been in the Blackstone section. Maybe a MOD can move it there.
To add some things to your list:
- Turn off Bluetooth when not used
- Experiment with different Radio ROM's they actually have a big impact on the battery life, depending on your location.
- Use Lumos to control the backlight or set it to manual and turn it as low as you like.
Use a profiler tool to turn on\off WiFi in specified times.
core7x said:
This is a technic how to improve your battery life in htc touch hd
1 - disable any 3g @ data connection
2 - disable any incoming beam in connection setting
3 - customize the power usage in power setting
4 - disable gps option in gps setting [ recommendation ]
5 - disable any wireless connection in standby
this is only way i know how to improve battery life...
hope users here can share with me
thanks
Click to expand...
Click to collapse
So don't use your HD... :E
Sorry...
core7x said:
This is a technic how to improve your battery life in htc touch hd
1 - disable any 3g @ data connection
2 - disable any incoming beam in connection setting
3 - customize the power usage in power setting
4 - disable gps option in gps setting [ recommendation ]
5 - disable any wireless connection in standby
this is only way i know how to improve battery life...
hope users here can share with me
thanks
Click to expand...
Click to collapse
6 - continue charging, even if your blackstone tells you that it's already full (your battery indicator is a liar )
mccune said:
Some people really are an expert in posting useless replies :S
CUT
Click to expand...
Click to collapse
... and I'm one of them. I was just smiling at this thread and of course didn't mean to be brute!
I'm wanderring why I should have in my pocket something worth hundreds of euros/dollar and using it as a 29.99 $ Nokia (by the way: I own one of these low cost mobiles...). Just in order to be away from the plug for a whole week? Any function you have drains battery and, of course, it's good to turn off functions as you don't use them. But what if you work in a WiFi-covered factory and use a BT hearphone?
I bought an external battery (sorry for my english... I don't really know how to call that battery "thing" that you can easily charge and carry and has a series of plugs to fit most phones).
That's all. And I feel sorry if looked so "expert in posting useless replies..."
Hileotech said:
... and I'm one of them. I was just smiling at this thread and of course didn't mean to be brute!
I'm wanderring why I should have in my pocket something worth hundreds of euros/dollar and using it as a 29.99 $ Nokia (by the way: I own one of these low cost mobiles...). Just in order to be away from the plug for a whole week? Any function you have drains battery and, of course, it's good to turn off functions as you don't use them. But what if you work in a WiFi-covered factory and use a BT hearphone?
I bought an external battery (sorry for my english... I don't really know how to call that battery "thing" that you can easily charge and carry and has a series of plugs to fit most phones).
That's all. And I feel sorry if looked so "expert in posting useless replies..."
Click to expand...
Click to collapse
this is just a thread where user can share information...
not consider with the situation and location...
" But what if you work in a WiFi-covered factory and use a BT hearphone? "
this is a reason when someone situation...at least, they can use other method to reduce battery otherwise improve battery performance ...
think alternative..
core7x said:
... CUT...
think alternative..
Click to expand...
Click to collapse
I surely will!
Please don't consider my posts as offensive towards you: I didn't mean so!
Have a nice day (and battery savings )
Have a look at NueDynamicClock! Seems to work pretty darn good for some users
- NueDynamicClock Blackstone Topic
- NueDynamicClock General Topic
mccune said:
Have a look at NueDynamicClock! Seems to work pretty darn good for some users
- NueDynamicClock Blackstone Topic
- NueDynamicClock General Topic
Click to expand...
Click to collapse
Not the 1.2 version though, 1.0 is the 'ace' version.
Thanks for the tips. I wasn't aware that having the incoming infrared beam checked would have an impact on battery life, since HD doesn't have I/R.
As for the WiFi, there's a tool that turns wifi on/off when in range of a CellID, thus making it location based (sort of). It's handy if you need Wifi at work and home, but not when you're commuting. I've tested it and it also works on HD.
http://forum.xda-developers.com/showthread.php?t=448783
The incoming beam option is just a safety option on the Touch HD.
It used to activate IR and make it possible to receive files over BT. Now it only applies to Bluetooth so I can't imagine that enabling this option would drain the battery (in tests it even proved that the IR didn't drain the battery).
The main idea is to use the features when you really need them !
uaealk said:
The main idea is to use the features when you really need them !
Click to expand...
Click to collapse
Exactly, and this should be common sense anyway. I only use wifi, gps, bluetooth etc when I need them.
NOTE
Also leaving bluetooth on all the time leaves your phone vunerable to hackers you can access your phone and take your credit, steal files etc
WifiLocation automize Wifi
apy said:
Thanks for the tips. I wasn't aware that having the incoming infrared beam checked would have an impact on battery life, since HD doesn't have I/R.
As for the WiFi, there's a tool that turns wifi on/off when in range of a CellID, thus making it location based (sort of). It's handy if you need Wifi at work and home, but not when you're commuting. I've tested it and it also works on HD.
http://forum.xda-developers.com/showthread.php?t=448783
Click to expand...
Click to collapse
Cool. Thanks alot for that fine news!

[Q] 4 random questions...

I'm looking for a new phone, so if someone could answer these questions I would really appreciate it.
1. Is it possible to change the font size of the text on this phone for menus, sms, web browsing, apps etc.. everything in general?
2. Just something I heard not sure if it's true but, does the super AMOLED really use 2x the power for white color backgrounds than for ANY other color? That would be really bad for web browsing which I intend to use quite a lot.
3. How much does the battery last with only web browsing over wifi and music player in the background?
4. Any tips about Galaxy S or things you don't like about it? (whatever comes to your mind really)
thanks
Well , at least i got no problems with the baterry life at all , i can use it all day with music on and playibg games browsing etc... Also the super amoled is simply amazing. Overall i really like the phone at all points , the only disadvantages of it are the lag problem wich can easily be fixed and hopefully by samsung in the nearby future. Also its knowb that the gps is not working well but i didnt try this yet
be more specific.
the GPS works
the problem people are complaining about is that the GPS is not accurate enough for some people
3t3rnity said:
3. How much does the battery last with only web browsing over wifi and music player in the background?
thanks
Click to expand...
Click to collapse
Do you mean 'How long does it last with just some regular web browsing and music playing ?' or do you mean 'How long can I browse the net for before I kill the battery ?'
The first one: the battery will last you just fine to look up a few things here and there and generally be a daily driver.
The second one: A lot less than you think. You will get maybe 3ish hours with the screen lit between charges. The level of brightness and other things on the phone can change this, but seriously, don't be thinking about spending a great deal of time with the screen active unless you have some source of power.
Either way, this is not a problem with the SGS, ALL phones with big screens regardless of os or manufacturer have problems with battery life, at least in the sense that they never last as much as you'd want to.
As for any other tips and tricks:
Check your GPS when you get it out of the box, then apply one of the fixes if need-be. Some people find that out of the box, they either can't get a lock, or there is a lack of accuracy. I got the first problem, but the fix works fine and now I can satnav with the best of them. The accuracy isn't perfect, but good enough. Before I have been shown as driving 10 yards off the road in a field but it corrected within 30 seconds and its not like it became unusable. I have never had a problem with using the navigation. It has ALWAYS got me where I want to be.
Secondly, for gods sake use a lagfix, even if you don't get lag. As you put more apps on and fill the memory up more, you'll eventually get some slow down, so you may as well nip it in the bud.
If you are going to buy a droid device in the near future, the galaxy is the phone to buy. Get one, you will NOT be disappointed.
LostAlone said:
If you are going to buy a droid device in the near future, the galaxy is the phone to buy. Get one, you will NOT be disappointed.
Click to expand...
Click to collapse
Totally agree , even though still hoping that samsung will bring us a bugless froyo very soon.
Could someone answer the first question please?
Here I thought of another one... Does the alarm clock work with the phone closed?
Fonts can be changed depending if app supports it. I use lcd density changer. And of cause alarm works but do you mean when phone is totaly powered off? No idea
Sent from my GT-I9000 using Tapatalk
3t3rnity said:
Could someone answer the first question please?
Here I thought of another one... Does the alarm clock work with the phone closed?
Click to expand...
Click to collapse
Not sure how to interpret "phone closed". Screen off, yes it works. Phone in a case, yes it works. Phone off, no it doesnt work. If I've missed what you've meant please clarify.
alovell83 said:
Not sure how to interpret "phone closed". Screen off, yes it works. Phone in a case, yes it works. Phone off, no it doesnt work. If I've missed what you've meant please clarify.
Click to expand...
Click to collapse
My bad, I meant with phone OFF.
Well.. that's actually quite sad. Is it possible to make it work with an app or by rooting the phone?

Touch Diamond Battery Epic Fail

Hello all =D
I'm despaired by seeing people running nice Android on there Touch Diamond...
I'm explaining to you :
I tryed a lot of android rom (2.x) from XDA, CONNECT-UTB & NeoPeek...
The result is always the same : BATTERY DRAIN --'
I tryed many kernel, modules etc,etc on glemsom.users.anapnea.net/android2/htc-msm-linux/
I don't know what to do ... WM makes me beeing crazy, like all of Microsoft products...
I really need your help...
demonroro said:
Hello all =D
I'm despaired by seeing people running nice Android on there Touch Diamond...
I'm explaining to you :
I tryed a lot of android rom (2.x) from XDA, CONNECT-UTB & NeoPeek...
The result is always the same : BATTERY DRAIN --'
I tryed many kernel, modules etc,etc on glemsom.users.anapnea.net/android2/htc-msm-linux/
I don't know what to do ... WM makes me beeing crazy, like all of Microsoft products...
I really need your help...
Click to expand...
Click to collapse
You should go on ebay and buy a new battery
pretty cheap
For me, its seems coming from android drivers, because WM runs for 3days without plugging AC Power ...
demonroro said:
For me, its seems coming from android drivers, because WM runs for 3days without plugging AC Power ...
Click to expand...
Click to collapse
Oh haha, I have the same problem, your not the only one. But in the android porting of the DIAM, this has been known as a issue, and this point everything is being done. The battery is just PART of a list of bugs and issues.
What you can do to limit battery drain
1] Lower settings on android -Screen brightness, -Use Data when needed otherwise keep it off, also with internet.
2]I have gone through many kernels and it all of them vary, but ill let you know what kernel i have [because its ok with the battery]
3]Be patient because this is a project in the making so fixes will come as they are found [camera, video etc]
ALL this is mentioned through the massive thread [I would hate to read it all]
http://forum.xda-developers.com/showthread.php?t=711692
stay tune
Adjust your backlight (for me, the maximum brightness is too strong - I'm photophobic- so I use the backlight on its 30~40%), or turn off connections like GPS, BT or Wi-Fi, just turn on when it's necessary...
It'll save some batt...
If the problem continues, grab a new batt on ebay...
I did it, it seems to be better, after 12h with a low utilization, the battery is at 60%.
But it's long to wait for a good release x)

[Q] I need help establishing a wakelock please?

Hello all. I am writing about my wife's Note1 (N7000, 16Gb).
The phone functions just fine except for one thing. At about 50% battery, it will just go to deep sleep and will require a long press power to wake up. Happens with any battery and have tried a few different ROMs (custom and stock). A SECOND Note we have (my sister's; I have a Note2) doesnt do any of this with same batteries and same ROMs, so does seem to be weirdness with this one.
I DO have a solution which has been proven to work with a scientific cause/effect relationship:
I installed THIS app from the PlayStore:
https://play.google.com/store/apps/details?id=eu.thedarken.wl
Now I dont fully understand wakelocks, but I reckoned the CPU was going into deep sleep so I set the wakelock to be FULL (see screenshot 1). This 100% solves the problem and the phone is fully normal now, and my wife says she cant tell any loss of battery life.
SO....
Looking to do one of two things:
1. is there a way we can have this app AUTORUN on boot cos she keeps forgetting to run it when she swaps battery (which is once a day cos she is heavy outside house user) and then wakelock not running then phone sleeps! DOH! If autoruns, then she can at least SEE the wakelock screen and press the lock to be active (we are still testing how LOW a wakelock can we get away with but for now using 7)
2. even better, is there a KERNEL I can flash her to that will give me same functionality so she never even needs the app? Something where I can set a minimum CPU level in a similar fashion and it is now a set-it-and-forget-it even surviving a reboot?
See pic2 for the stock ROM she is on now and is great. Given that phone is otherwise fabulous and all else is stable and functional, I would like to keep to this ROM if at all possible so as not to introduce new weirdness. Also, given that this is such an easy software fix, I am not looking to hardware repair the phone as just want to fix this and get on with life.
Hope this is enough info for an informative and educational discussion and looking forward to some good advice.
Thanks to all, and kind regards,
Asif
So are you wanting to prevent the phone from going into deep sleep?
maskerwsk said:
So are you wanting to prevent the phone from going into deep sleep?
Click to expand...
Click to collapse
Correct, yes. Need to stop the phone from sleeping so deeply that it is effecttively off now as wife misses critical reminder alarms, as well as phone calls etc. As it is (without the wakelock) the phone is pretty useless. WAS actually my sister's but had to swap and now SHE has the wife's old one. Sister is a surgeon and when phone was deeply asleep, hospital could never contact her so not good. So swapped and sister has wife's good one so that is off my back. Wife's (sister's old one) is here and easier to test out as sister lives in England and I am in Glasgow. Easier to take dodgy one and work on it here.
So need phone to remain functional until such time as battery is dead, like you would expect any normal phone to do.
So need wakelock to remain in force as described above, as WITH the wakelock active, the phone is perfect.
Thanks.
Is the phone rooted?
If so you could flash this mod i made. It prevents deepsleep.
http://forum.xda-developers.com/showthread.php?p=39915561
Only works on xxlsz though
maskerwsk said:
Is the phone rooted?
Click to expand...
Click to collapse
Yes it is. Sorry forgot to mention.
See edited post above
maskerwsk said:
See edited post above
Click to expand...
Click to collapse
Looks like the kind of thing I need, thanks.
Was very much not keen on switching ROMs tho as this one just working perfectly, and we all know that every ROM has it's quirks. Didnt want more headaches with the wife giving me daily anecdotes of weirdness!
What do you reckon would happen if I were to try flashing this on LSO ROM? I suppose the worst thing is a bork and then I just wipe and reflash LSO fresh? Is this just a typical CWM zip?
Or is there anything just like this (kernel or mod) that could be flashed on LSO?
Appreciate your time and help so far.
The mod is in the androidpolicy.jar so i doubr it will work. Worth a try as long as you backup first
maskerwsk said:
The mod is in the androidpolicy.jar so i doubr it will work. Worth a try as long as you backup first
Click to expand...
Click to collapse
OK, thanks.
Before I do, will wait to let the thread cook a wee bit and see if any other alternatives emerge.
Cheers.
asifanwaruk said:
OK, thanks.
Before I do, will wait to let the thread cook a wee bit and see if any other alternatives emerge.
Cheers.
Click to expand...
Click to collapse
Bump.
Any other ideas before I try the above?
Thanks.
Just a follow up if anyone is following this.
I DID flash the LSZ ROM and the zip patch and phone still died that night and failed to ring the morning's wake up alarm. To be honest, I am not sure what is going on with it. I have done a 'deep clean' (actually too much and I bricked it and then recovered it! Code Brown!!) and now flashed Slim Bean 4.2.2 to try something totally different and get away from a Sammy based ROM.
We shall see by tomorrow if phone can sleep at night without going into a coma, and then wife's wake up alarm can still ring.
If not then I think it is time for a service.
But wanted to come back on here and thank you for your time and efforts anway.
Kind regards.

[Q] Horror: Battery Drain on EXYNOS N9 - any insights?

Hi there!
I know that this is not the first thread regarding the EXYNOS battery drain issue, but as a matter of fact, I didn´t find any hints on how to tackle it on all the forums out there. I constantly get something between 2 to 4 hours of SOT with my Note 9 and I guess I am right to say that this is far beyond strange. My 3 years old Oneplus 3T still achieves something around 6 hours - with the very same bevavior and a way smaller battery.
I´m a standard user without any special usage behavior - mainly messaging, mail checks, some notes here and there and some spotify. Dual Sim active, WiFi active, AOS active, good wifi & data connection.
Here are some repeated measurements (samsung, gsam):
EDIT: Exchanged Screenshots, see below
This cannot be normal - and as I´m obviously not alone with this issue, I´m super grateful for every meaningful discussion on the why and how to tackle. I don´t think that any behavior recommendations would be helpful here ("disable wifi if not needed", "reduce screen brightness to a minimum" etc). I don´t want to mess around with greenify via root or xposed module etc either. This is a 1000€ device and it performs much worse than my old OnePlus.
What do you guys think? is there anything i´ve missed? Are there any hints on how to hunt down some main suckers? Did anyone with an exynos device and the same issue get out of this mess?
brooon said:
Hi there!
I know that this is not the first thread regarding the EXYNOS battery drain issue, but as a matter of fact, I didn´t find any hints on how to tackle it on all the forums out there. I constantly get something between 2 to 4 hours of SOT with my Note 9 and I guess I am right to say that this is far beyond strange. My 3 years old Oneplus 3T still achieves something around 6 hours - with the very same bevavior and a way smaller battery.
I´m a standard user without any special usage behavior - mainly messaging, mail checks, some notes here and there and some spotify. Dual Sim active, WiFi active, AOS active, good wifi & data connection.
Here are some repeated measurements (samsung, gsam):
https://www.directupload.net/file/d/...bp3g3f_jpg.htm
https://www.directupload.net/file/d/...dmeino_jpg.htm
https://www.directupload.net/file/d/...olhmv9_jpg.htm
https://www.directupload.net/file/d/...wan6kl_jpg.htm
https://www.directupload.net/file/d/...wy9pd8_jpg.htm
https://www.directupload.net/file/d/...hvbdkn_jpg.htm
https://www.directupload.net/file/d/...yukocx_jpg.htm
https://www.directupload.net/file/d/...olsccr_jpg.htm
https://www.directupload.net/file/d/...d37e8f_jpg.htm
https://www.directupload.net/file/d/...32s7kp_jpg.htm
This cannot be normal - and as I´m obviously not alone with this issue, I´m super grateful for every meaningful discussion on the why and how to tackle. I don´t think that any behavior recommendations would be helpful here ("disable wifi if not needed", "reduce screen brightness to a minimum" etc). I don´t want to mess around with greenify via root or xposed module etc either. This is a 1000€ device and it performs much worse than my old OnePlus.
What do you guys think? is there anything i´ve missed? Are there any hints on how to hunt down some main suckers? Did anyone with an exynos device and the same issue get out of this mess?
Click to expand...
Click to collapse
How old is your Note 9 ? Have you updated to ONE UI recently ? And none of your links work! i tried a few. They go to some upload page! No images are being displayed, and i cant work out what to click as it's in some foreign language!!
N1NJATH3ORY said:
How old is your Note 9 ? Have you updated to ONE UI recently ? And none of your links work! i tried a few. They go to some upload page! No images are being displayed, and i cant work out what to click as it's in some foreign language!!
Click to expand...
Click to collapse
His links in a post within the real life review forums works.
If I was OP, I'd start from scratch. I'd also be checking standby drain V SOT. Put device in airplane mode and check overnight how much battery consumption has occured. Then same with airplane mode off. Within gsam app, also check what apps are using what the most via the pull down menu, pic attached.
Also try putting to sleep all apps that dont require your notifications all the time.
View attachment 4724340View attachment 4724341
Sent from my SM-N960U1 using Tapatalk
Limeybastard said:
His links in a post within the real life review forums works.
If I was OP, I'd start from scratch. I'd also be checking standby drain V SOT. Put device in airplane mode and check overnight how much battery consumption has occured. Then same with airplane mode off. Within gsam app, also check what apps are using what the most via the pull down menu, pic attached.
Also try putting to sleep all apps that dont require your notifications all the time.
View attachment 4724340View attachment 4724341
Sent from my SM-N960U1 using Tapatalk
Click to expand...
Click to collapse
Not sure how his links are working for you! see pic this is what i get!
N1NJATH3ORY said:
Not sure how his links are working for you! see pic this is what i get!
Click to expand...
Click to collapse
In the sub forum real life stories or something he made a post with his links not truncated. Screen shot attached.
Sent from my SM-N960U1 using Tapatalk
brooon said:
Hi there!
I know that this is not the first thread regarding the EXYNOS battery drain issue, but as a matter of fact, I didn´t find any hints on how to tackle it on all the forums out there. I constantly get something between 2 to 4 hours of SOT with my Note 9 and I guess I am right to say that this is far beyond strange. My 3 years old Oneplus 3T still achieves something around 6 hours - with the very same bevavior and a way smaller battery.
I´m a standard user without any special usage behavior - mainly messaging, mail checks, some notes here and there and some spotify. Dual Sim active, WiFi active, AOS active, good wifi & data connection.
Hi
you try factory reset
Click to expand...
Click to collapse
Jepp, have done a factory reset recently which didn´t really have a significant effect Before someone asks: I didn´t use youtube premium until 3 days ago, it´s not the battery eater. Check this:
brooon said:
Jepp, have done a factory reset recently which didn´t really have a significant effect Before someone asks: I didn´t use youtube premium until 3 days ago, it´s not the battery eater. Check this:
Click to expand...
Click to collapse
Strange with your SoT.. I tried a few things that helped me really. Just look into your Devoptions and navigate to ''Backgroundprocesses'' & ''Backgroundchecking for Apps'' Read this in antoher Thread here..so if you deactivate things like Bixby or similar..my SoT push up to nearly 7 Hrs and my overall runtime of the device is between 2 or 3 Days, depend on Usage. Bevore i get only 2-3 Hrs SoT and overall runtime about 1.5 Days. So maybve it will help you with this 2 settings in Devoptions.
If you cant find it, i can attach Screenshots, wich 2 Options i mean. But my Systemlanguage is German, just saying. But if you want, i upload a Screenshot. Want to say that the impact for Sot and overall runtime was amazing. You can feel it just after deacitivating a few things, if you look on your Batterybar. Other Option is to clear Cache via Recovery. But this helps not everytime and if you done a factoryreset so far, i dont think this will help.
*Edit* Oh forget to say, you can also put your Always On on activate by taping on screen. So this save me a few % Battery aswell !
Hope this will help you :good:
Heyhey Treasarion! Thx for your reply, very much appreciated! Hey, feel free to add your Screenshots, because - as a matter of fact - my Screenshots are in German as well .
I know about the impact of the AOD (but anyway, thx for the hint!), but based on my experience, that's just approx 1 % per hour (at max!), so this "macht die Suppe nicht fett". There must be another issue....
Hey would be cool to see your recommendations!
brooon said:
Heyhey Treasarion! Thx for your reply, very much appreciated! Hey, feel free to add your Screenshots, because - as a matter of fact - my Screenshots are in German as well .
I know about the impact of the AOD (but anyway, thx for the hint!), but based on my experience, that's just approx 1 % per hour (at max!), so this "macht die Suppe nicht fett". There must be another issue....
Hey would be cool to see your recommendations!
Click to expand...
Click to collapse
''so this "macht die Suppe nicht fett" YMMD :laugh::laugh::laugh::laugh:
Okay i give you a Screenshot wich 2 Options i mean, and 2 Screenshots wich things i personaly deactivated and are safe to deactivate. So you dont must research by yourself :highfive:
'Edit' Oh hope you can see something on my last 2 Screens..maybe they are too large ?! And for your usage case i recommend you to look exactly what you need and what not. Want to say maybe you can deactivate more then in my personal setup or less, depend on your usagecase. But i can say, that everything work perfect for me with this list of apps i deactivated for backgroundcheck or put in standbymode.
Hey! Thx for providing me with your suggestions - just updated my setup accordingly - will keep you posted!
Hi OP.
Any update on the battery performance?
Hey there,
sadly not - honestly, I'm a bit frustrated at the moment and i dont really know what to do.
What you can see in the screenshot is my exceptional use of Whatsapp yesterday evening, but still: no matter what I do, I can literally watch the battery go down.
Screenie:
Btw: here's one of a lot of issue reportings within the samsung members space. You can read yourself through those 10 pages, all of them are reporting the same issues.
https://us.community.samsung.com/t5/Note-9/Samsung-note-9-Battery-drain-issue/td-p/396961
brooon said:
Btw: here's one of a lot of issue reportings within the samsung members space. You can read yourself through those 10 pages, all of them are reporting the same issues.
https://us.community.samsung.com/t5/Note-9/Samsung-note-9-Battery-drain-issue/td-p/396961
Click to expand...
Click to collapse
What u didnt answered :
Do you use Android 9 Pie ? Or Oreo ?
Did it came with Pie ? Or did it came with Oreo and Updated later per OTA to Pie ?
Liebe Grüße
Hey @amorosa,
It came with Oreo and was updated to PIE as soon as the update came in. Running in PIE now!
brooon said:
Hey @amorosa,
It came with Oreo and was updated to PIE as soon as the update came in. Running in PIE now!
Click to expand...
Click to collapse
So you had the Problems with Oreo too ?
Actually - i dont know bought the Note 9 used, as always and it already came with pie (to me!). I bought it in January, the original receipt is dated on September 18.
Maybe a downgrade to oreo via Odin is recommended to see if that helps
I mean : You tryed anything else i think
Uuhh what the...did you know that spotifiy is using the accelerator like - all the time? Just stumbled upon this in BBS and a minute of research has shown that this is a know issue since years.
Will deinstall Spotify just for a day and see if it helps. Is just had a day with Bluetooth of - no effect.
EDIT: added 2 more Screenshots. One shows a service calles com.google. android.gms, which I guess is related to play Services. Numbers of alarms and corresponding wakeups are quite high as well...

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