Tuning Battery Life on Samsung Note 3 N900
I don't have a device anymore, but I still wish to share my experience and how I achieved 6 hours SoT with my typical daily usage on this phone.
This guide is for CM12.1 / AICP 10.0 (I recommend latter, it's the same CM 12.1 but with more options).
You can try this settings on aurora/stock ROMs with respective custom kernel (Suemax).
First of all, you need a kernel with Synapse support. This section is for CM12.1/AICP only! Don't try to flash these kernels if you are on Aurora/Stock - you'll have bootloop!
-- Download Stock and DJMax81's V2 kernel from this post and Suemax kernel from this post.
-- Make a backup
-- Flash CM12.1-DJmax81-Kernel-Lite-V2.zip
-- Boot your phone once and open Camera app to ensure it works.
-- Reboot to recovery and flash CM12.1-SueMax-Kernel-V3-By-DJMAX81.zip dirty. No need to wipe cashes.
-- If you encounter issues, restore backup or flash CM12.1-Stock.zip to return to the stock CM12.1 kernel.
Now you can fine-tune your Exynos!
First, disable touchboost. It's some sort of cheating Samsung use to make it's touchwiz not so laggy. On stock Android you simply don't need it, even if you set max CPU to lowly 250 Mhz, Stock Android UX is still decently smooth.
How to do this: open Synapse, go to the QoS tab. There are many, many sliders to control boost in different situations. Slide every one of them to the left. Now you gave full control of your phone freq to the governor.
This setting alone gave me up to 1 hour of SoT when texting or browsing. Because these are not demanding tasks and there's no need for CPU freq to ramp up.
Second, set min GPU speed to 100 MHz. This will save some juice when idle. Go to GPU Control in settings and set the corresponding Min freq slider to 100 MHz, then apply (you need to push the Set GPU settings button and a tick at the right top). You can also adjust Max GPU freq to suit your gaming needs. The more max GPU speed, the better gaming perfomance will be and the worse battery life in games (600 MHz stock value).
Third, let's go to Kernel Adiutor and here are some profiles for you that I found best!
Max Performance profile: Use zzmoove governor, max CPU speed to 1900 MHz, and at advanced governor settings set disable_hotplugging to 1.
Exynos hotplugging has rather negative effect on battery life as I found from my tests, you should never use it. If you are reading this and on Stock/Aurora ROM: disable hotplugging. It makes your battery life worse! Here is the test on Snapdragon 801, on Exynos hotpluging would yield even worse results because CPU with less core active will spend more time on unefficient A15 cores.
Zzmoove is the smoothest and fastest governor I found that still uses all available frequencies wisely.
That's the profile one should use for heavy games (and also set max GPU speed to 720 MHz in Synapse if you need it).
Performance profile: Use Interactive governor and max CPU speed 1900 MHz.
Interactive governor proactively ramps CPU to high (but not highest freq) to ensure great smoothness and still yield not-that-bad battery life (I had usually 4 hours SoT with 2G). For better fine-tuning you can go to advanced governor settings and set hispeed_freq to something in the middle, 800 MHz for example (but not lower than 800). hispeed_freq setting is the intermediate cpu speed which governor uses when there's initial load on cpu.
Balanced profile: Change governor to Ondemand, max CPU speed is still 1900 MHz.
You shouldn't worry, with touchboost disabled it would rarely ramp up to max speed, most often sitting on energy-efficient A7 cores and sometimes ramping to 1200 of A15, going even higher only when needed - still gives you whole power of your device without restrictions. DJMax81 did great job tuning this governor to our needs. You still can set max CPU lower (to 1400 Mhz) if you wish to conserve battery more on this profile.
Power saving profile: Go to Synapse and enable a slight touchboost: on QoS tab set CPU freq touchboost level 1 to 800 MHz (only the first slider). Then in Kernel Adiutor change CPU governor to Interactive. Set Max CPU speed to 1400. Go to advanced governor settings and set hispeed_freq to 400 MHz.
These settings are doing two things:
1. When not in use (e.g. you are not touching your phone), your device will use ONLY energy-efficient A7 cluster. So max 1300 MHz (it shows 650 MHz in Kernel Adiutor because A7 cluster is showing it's real freq divided by 2) with four cores - a performance level of middle-ground MTK device. Most often the phone will use 800 MHz freq of A7 (that's 400 MHz setting of hispeed_freq - a division by 2, remember)
2. When you are using device (actively tapping), touchboost will switch your device to A15 cores (starting from 800 MHz - at this freq they consume roughly same amount of energy as 1300 MHz'd A7) and if needed, interactive governor will ramp the freq even some more - up to 1400 MHz. When there will be no load, freq will drop to the minimum and system will switch to A7 cluster until next time you use it.
Extreme Power Saving profile: Disable touchboost, CPU governor is Interactive. At advanced governor settings set hispeed_freq to 400 MHz.
This makes your phone use ONLY energy-efficient A7 cluster no matter what circumstances. No matter what max CPU freq is set, interactive governor can't switch from A7 cluster to A15 (maybe that's a bug, but we'll use it). You can set max CPU speed to 650 MHz for sure, didn't make a difference for me.
Yes, it may lag. Yes, games are not playable. But we don't paint your screen black and white at least. Movies are fine, texting is fine, browsing too, 1300 MHz of A7 are still quite good - it's like low-end phone but with 3 GB RAM and AMOLED. Combine it with lollipop powersaving mode and GPU powersave bias (set in Synapse, always clocks GPU at 100 MHz). And your phone will go on and on and on...
Don't forget to click thanks button. Tell me your experience. My device is broken so there could be some mistakes. My apologizes. Have a nice day!
First. Thank u sir
Sent from my SM-A9000 using Tapatalk
Dude thank !!!!!!!
Where's Link's My Bro
Send From My N900. Resurrection Mix 5.5.9
hostess79197 said:
Where's Link's My Bro
Send From My N900. Resurrection Mix 5.5.9
Click to expand...
Click to collapse
Kernel Adiutor doesn't make profiles to share. You have to manually set parameters and then save profile for your device. That's only the guide of parameters to use for your needs.
Thanks for sharing.
I'm using TOS (a Chinese rom) now, and I got excellent battery life. The phone is still smooth.
If you're strict with battery life, TOS is really worth trying.
View attachment 3777633
View attachment 3777634
View attachment 3777635
Noyllopa said:
Thanks for sharing.
I'm using TOS (a Chinese rom) now, and I got excellent battery life. The phone is still smooth.
If you're strict with battery life, TOS is really worth trying.
View attachment 3777633
View attachment 3777634
View attachment 3777635
Click to expand...
Click to collapse
wow that battery life looks awesome, where u got the rom?
can u share it?
im still using kitkat rom myself since battery is better than any lollipop rom
ervanthe said:
wow that battery life looks awesome, where u got the rom?
can u share it?
im still using kitkat rom myself since battery is better than any lollipop rom
Click to expand...
Click to collapse
Here’s the download page. http://tos.cn/download/details-4.html
View attachment 3778089
SPEN working. But there‘s no GAPPS, you need to flash it yourself.
looking cool!
Noyllopa said:
Here’s the download page. http://tos.cn/download/details-4.html
View attachment 3778089
SPEN working. But there‘s no GAPPS, you need to flash it yourself.
Click to expand...
Click to collapse
is that rom based on cm or touch wiz? probably cm coz of u mentioned gapps. But spen is working is doubting me that is touchwiz. Also how big is that rom? and is it prerooted?
that battery pics that u showed r awesome!
is it stable to use in everyday?
any lags? and free ram available?
tnx ! cheers!
Anirup =) said:
is that rom based on cm or touch wiz? probably cm coz of u mentioned gapps. But spen is working is doubting me that is touchwiz. Also how big is that rom? and is it prerooted?
that battery pics that u showed r awesome!
is it stable to use in everyday?
any lags? and free ram available?
tnx ! cheers!
Click to expand...
Click to collapse
Based on Touch Wiz. In China google is blocked so there's no gapps.
The rom is already prerooted, you just need to open it in Manage(an app)-Permissons-Root access.
It's 905MB.
Now i'm using it everyday, it's quite stable and smooth. And games (e.g. Hearthstone) are playable.
I don't know how to install Xposed, it errors every time I want to flash it.
As for free ram, I don't know how to check it in this rom.
i want to know that if this kernel works on flyme rom
Sent from my SM-N900 using Tapatalk
Makshow said:
Tuning Battery Life on Samsung Note 3 N900
I don't have a device anymore, but I still wish to share my experience and how I achieved 6 hours SoT with my typical daily usage on this phone.
This guide is for CM12.1 / AICP 10.0 (I recommend latter, it's the same CM 12.1 but with more options).
You can try this settings on aurora/stock ROMs with respective custom kernel (Suemax).
First of all, you need a kernel with Synapse support. This section is for CM12.1/AICP only! Don't try to flash these kernels if you are on Aurora/Stock - you'll have bootloop!
-- Download Stock and DJMax81's V2 kernel from this post and Suemax kernel from this post.
-- Make a backup
-- Flash CM12.1-DJmax81-Kernel-Lite-V2.zip
-- Boot your phone once and open Camera app to ensure it works.
-- Reboot to recovery and flash CM12.1-SueMax-Kernel-V3-By-DJMAX81.zip dirty. No need to wipe cashes.
-- If you encounter issues, restore backup or flash CM12.1-Stock.zip to return to the stock CM12.1 kernel.
Now you can fine-tune your Exynos!
First, disable touchboost. It's some sort of cheating Samsung use to make it's touchwiz not so laggy. On stock Android you simply don't need it, even if you set max CPU to lowly 250 Mhz, Stock Android UX is still decently smooth.
How to do this: open Synapse, go to the QoS tab. There are many, many sliders to control boost in different situations. Slide every one of them to the left. Now you gave full control of your phone freq to the governor.
This setting alone gave me up to 1 hour of SoT when texting or browsing. Because these are not demanding tasks and there's no need for CPU freq to ramp up.
Second, set min GPU speed to 100 MHz. This will save some juice when idle. Go to GPU Control in settings and set the corresponding Min freq slider to 100 MHz, then apply (you need to push the Set GPU settings button and a tick at the right top). You can also adjust Max GPU freq to suit your gaming needs. The more max GPU speed, the better gaming perfomance will be and the worse battery life in games (600 MHz stock value).
Third, let's go to Kernel Adiutor and here are some profiles for you that I found best!
Max Performance profile: Use zzmoove governor, max CPU speed to 1900 MHz, and at advanced governor settings set disable_hotplugging to 1.
Exynos hotplugging has rather negative effect on battery life as I found from my tests, you should never use it. If you are reading this and on Stock/Aurora ROM: disable hotplugging. It makes your battery life worse! Here is the test on Snapdragon 801, on Exynos hotpluging would yield even worse results because CPU with less core active will spend more time on unefficient A15 cores.
Zzmoove is the smoothest and fastest governor I found that still uses all available frequencies wisely.
That's the profile one should use for heavy games (and also set max GPU speed to 720 MHz in Synapse if you need it).
Performance profile: Use Interactive governor and max CPU speed 1900 MHz.
Interactive governor proactively ramps CPU to high (but not highest freq) to ensure great smoothness and still yield not-that-bad battery life (I had usually 4 hours SoT with 2G). For better fine-tuning you can go to advanced governor settings and set hispeed_freq to something in the middle, 800 MHz for example (but not lower than 800). hispeed_freq setting is the intermediate cpu speed which governor uses when there's initial load on cpu.
Balanced profile: Change governor to Ondemand, max CPU speed is still 1900 MHz.
You shouldn't worry, with touchboost disabled it would rarely ramp up to max speed, most often sitting on energy-efficient A7 cores and sometimes ramping to 1200 of A15, going even higher only when needed - still gives you whole power of your device without restrictions. DJMax81 did great job tuning this governor to our needs. You still can set max CPU lower (to 1400 Mhz) if you wish to conserve battery more on this profile.
Power saving profile: Go to Synapse and enable a slight touchboost: on QoS tab set CPU freq touchboost level 1 to 800 MHz (only the first slider). Then in Kernel Adiutor change CPU governor to Interactive. Set Max CPU speed to 1400. Go to advanced governor settings and set hispeed_freq to 400 MHz.
These settings are doing two things:
1. When not in use (e.g. you are not touching your phone), your device will use ONLY energy-efficient A7 cluster. So max 1300 MHz (it shows 650 MHz in Kernel Adiutor because A7 cluster is showing it's real freq divided by 2) with four cores - a performance level of middle-ground MTK device. Most often the phone will use 800 MHz freq of A7 (that's 400 MHz setting of hispeed_freq - a division by 2, remember)
2. When you are using device (actively tapping), touchboost will switch your device to A15 cores (starting from 800 MHz - at this freq they consume roughly same amount of energy as 1300 MHz'd A7) and if needed, interactive governor will ramp the freq even some more - up to 1400 MHz. When there will be no load, freq will drop to the minimum and system will switch to A7 cluster until next time you use it.
Extreme Power Saving profile: Disable touchboost, CPU governor is Interactive. At advanced governor settings set hispeed_freq to 400 MHz.
This makes your phone use ONLY energy-efficient A7 cluster no matter what circumstances. No matter what max CPU freq is set, interactive governor can't switch from A7 cluster to A15 (maybe that's a bug, but we'll use it). You can set max CPU speed to 650 MHz for sure, didn't make a difference for me.
Yes, it may lag. Yes, games are not playable. But we don't paint your screen black and white at least. Movies are fine, texting is fine, browsing too, 1300 MHz of A7 are still quite good - it's like low-end phone but with 3 GB RAM and AMOLED. Combine it with lollipop powersaving mode and GPU powersave bias (set in Synapse, always clocks GPU at 100 MHz). And your phone will go on and on and on...
Don't forget to click thanks button. Tell me your experience. My device is broken so there could be some mistakes. My apologizes. Have a nice day!
Click to expand...
Click to collapse
Hello sir.... I am using sumax v3 karnel with the settings you have mentioned in the thread. Everything is fine... Battery life is great... No problem of heating... Speed is ok but i have facing a problem.... MY PHONE FREEZES RANDOMLY ANY SOLUTION PLEASE HELP. IT FREEZES WHEN SCREEN IS OFF AND I HAVE TO RESTART MY PHONE. I AM USING CYANOGENMOD 12.1. PROBLEM OCCURS ONLY WHEN I USE SUMMAX KARNEL AND PRESCRIBED SETTINGS.
set cpu gov ondemand because its hard to wake up cores on extreme low freq when on sleep mode
Sent from my SM-N900 using Tapatalk 2
Makshow said:
Tuning Battery Life on Samsung Note 3 N900
I don't have a device anymore, but I still wish to share my experience and how I achieved 6 hours SoT with my typical daily usage on this phone.
This guide is for CM12.1 / AICP 10.0 (I recommend latter, it's the same CM 12.1 but with more options).
You can try this settings on aurora/stock ROMs with respective custom kernel (Suemax).
First of all, you need a kernel with Synapse support. This section is for CM12.1/AICP only! Don't try to flash these kernels if you are on Aurora/Stock - you'll have bootloop!
-- Download Stock and DJMax81's V2 kernel from this post and Suemax kernel from this post.
-- Make a backup
-- Flash CM12.1-DJmax81-Kernel-Lite-V2.zip
-- Boot your phone once and open Camera app to ensure it works.
-- Reboot to recovery and flash CM12.1-SueMax-Kernel-V3-By-DJMAX81.zip dirty. No need to wipe cashes.
-- If you encounter issues, restore backup or flash CM12.1-Stock.zip to return to the stock CM12.1 kernel.
Now you can fine-tune your Exynos!
First, disable touchboost. It's some sort of cheating Samsung use to make it's touchwiz not so laggy. On stock Android you simply don't need it, even if you set max CPU to lowly 250 Mhz, Stock Android UX is still decently smooth.
How to do this: open Synapse, go to the QoS tab. There are many, many sliders to control boost in different situations. Slide every one of them to the left. Now you gave full control of your phone freq to the governor.
This setting alone gave me up to 1 hour of SoT when texting or browsing. Because these are not demanding tasks and there's no need for CPU freq to ramp up.
Second, set min GPU speed to 100 MHz. This will save some juice when idle. Go to GPU Control in settings and set the corresponding Min freq slider to 100 MHz, then apply (you need to push the Set GPU settings button and a tick at the right top). You can also adjust Max GPU freq to suit your gaming needs. The more max GPU speed, the better gaming perfomance will be and the worse battery life in games (600 MHz stock value).
Third, let's go to Kernel Adiutor and here are some profiles for you that I found best!
Max Performance profile: Use zzmoove governor, max CPU speed to 1900 MHz, and at advanced governor settings set disable_hotplugging to 1.
Exynos hotplugging has rather negative effect on battery life as I found from my tests, you should never use it. If you are reading this and on Stock/Aurora ROM: disable hotplugging. It makes your battery life worse! Here is the test on Snapdragon 801, on Exynos hotpluging would yield even worse results because CPU with less core active will spend more time on unefficient A15 cores.
Zzmoove is the smoothest and fastest governor I found that still uses all available frequencies wisely.
That's the profile one should use for heavy games (and also set max GPU speed to 720 MHz in Synapse if you need it).
Performance profile: Use Interactive governor and max CPU speed 1900 MHz.
Interactive governor proactively ramps CPU to high (but not highest freq) to ensure great smoothness and still yield not-that-bad battery life (I had usually 4 hours SoT with 2G). For better fine-tuning you can go to advanced governor settings and set hispeed_freq to something in the middle, 800 MHz for example (but not lower than 800). hispeed_freq setting is the intermediate cpu speed which governor uses when there's initial load on cpu.
Balanced profile: Change governor to Ondemand, max CPU speed is still 1900 MHz.
You shouldn't worry, with touchboost disabled it would rarely ramp up to max speed, most often sitting on energy-efficient A7 cores and sometimes ramping to 1200 of A15, going even higher only when needed - still gives you whole power of your device without restrictions. DJMax81 did great job tuning this governor to our needs. You still can set max CPU lower (to 1400 Mhz) if you wish to conserve battery more on this profile.
Power saving profile: Go to Synapse and enable a slight touchboost: on QoS tab set CPU freq touchboost level 1 to 800 MHz (only the first slider). Then in Kernel Adiutor change CPU governor to Interactive. Set Max CPU speed to 1400. Go to advanced governor settings and set hispeed_freq to 400 MHz.
These settings are doing two things:
1. When not in use (e.g. you are not touching your phone), your device will use ONLY energy-efficient A7 cluster. So max 1300 MHz (it shows 650 MHz in Kernel Adiutor because A7 cluster is showing it's real freq divided by 2) with four cores - a performance level of middle-ground MTK device. Most often the phone will use 800 MHz freq of A7 (that's 400 MHz setting of hispeed_freq - a division by 2, remember)
2. When you are using device (actively tapping), touchboost will switch your device to A15 cores (starting from 800 MHz - at this freq they consume roughly same amount of energy as 1300 MHz'd A7) and if needed, interactive governor will ramp the freq even some more - up to 1400 MHz. When there will be no load, freq will drop to the minimum and system will switch to A7 cluster until next time you use it.
Extreme Power Saving profile: Disable touchboost, CPU governor is Interactive. At advanced governor settings set hispeed_freq to 400 MHz.
This makes your phone use ONLY energy-efficient A7 cluster no matter what circumstances. No matter what max CPU freq is set, interactive governor can't switch from A7 cluster to A15 (maybe that's a bug, but we'll use it). You can set max CPU speed to 650 MHz for sure, didn't make a difference for me.
Yes, it may lag. Yes, games are not playable. But we don't paint your screen black and white at least. Movies are fine, texting is fine, browsing too, 1300 MHz of A7 are still quite good - it's like low-end phone but with 3 GB RAM and AMOLED. Combine it with lollipop powersaving mode and GPU powersave bias (set in Synapse, always clocks GPU at 100 MHz). And your phone will go on and on and on...
Don't forget to click thanks button. Tell me your experience. My device is broken so there could be some mistakes. My apologizes. Have a nice day!
Click to expand...
Click to collapse
Hello Where can I go to see the "Kernel Adiutor" whether I need to install it from PlayStore?
SAINI99 said:
set cpu gov ondemand because its hard to wake up cores on extreme low freq when on sleep mode
Sent from my SM-N900 using Tapatalk 2
Click to expand...
Click to collapse
Sir i have been already using ondemand governor but problem priciest i reflashed the rom and usesed with stock karnel for 2 days phone didn't freeze with stok karnel but as i flashed the karnel and set the given values it started freezing again... I want to use the karnel because everything is better than the stock one heating issue is major one with the rom but can be solved by the karnel but how to get rid of freezing problem.
Balraj77712 said:
Hello sir.... I am using sumax v3 karnel with the settings you have mentioned in the thread. Everything is fine... Battery life is great... No problem of heating... Speed is ok but i have facing a problem.... MY PHONE FREEZES RANDOMLY ANY SOLUTION PLEASE HELP. IT FREEZES WHEN SCREEN IS OFF AND I HAVE TO RESTART MY PHONE. I AM USING CYANOGENMOD 12.1. PROBLEM OCCURS ONLY WHEN I USE SUMMAX KARNEL AND PRESCRIBED SETTINGS.
Click to expand...
Click to collapse
Try to increase voltage slightly, +25 mV should be fine. Kernel Adiutor - CPU Voltage - Global at right top. It will not make any effect to battery life. If I remember correctly, Suemax kernel is a bit undervolted by default and if on most phones it's fine, on some it can make issues.
premryp007 said:
Hello Where can I go to see the "Kernel Adiutor" whether I need to install it from PlayStore?
Click to expand...
Click to collapse
You can install it from Play Store, if you don't have one. On my ROM it was just built-in. Synapse should be built-in in kernel, you can update it from Play Store as usual.
Makshow said:
Try to increase voltage slightly, +25 mV should be fine. Kernel Adiutor - CPU Voltage - Global at right top. It will not make any effect to battery life. If I remember correctly, Suemax kernel is a bit undervolted by default and if on most phones it's fine, on some it can make issues.
Sir i have set cpu voltage +25 the problem have been solved by doing so but some time cpu voltage automatically increased and phone start lagging and freezing... Any solution sir.. Thanks in advance.
Click to expand...
Click to collapse
Balraj77712 said:
Sir i have set cpu voltage +25 the problem have been solved by doing so but some time cpu voltage automatically increased and phone start lagging and freezing... Any solution sir.. Thanks in advance.
Click to expand...
Click to collapse
Hmm, can you tell some more about this? I don't even have a clue, how the voltage can be increased automatically and phone start to lagging from more voltage? Usually, it's the contrary: more voltage = more stability for overclock etc.
Makshow said:
Hmm, can you tell some more about this? I don't even have a clue, how the voltage can be increased automatically and phone start to lagging from more voltage? Usually, it's the contrary: more voltage = more stability for overclock etc.
Click to expand...
Click to collapse
Sir i set the cpu voltage by +25. Phone didn't freeze but after a day it freezed again when i checked the cpu voltage after restarting the phone it was the default values i set it by +25 again. After 7-8 hours some apps like Es file Explorer, Whats app, uc browser stopped working (saying like whats app is not responding) i was unable to move some content from phone to sd card. Other functions like settings, dialer etc. Was working. Phone didn't connect to pc. Neither restarted nor power off (restarting and shutting down.) after restarting the cpu voltage was more then the default values. See screenshots sir
Balraj77712 said:
Sir i set the cpu voltage by +25. Phone didn't freeze but after a day it freezed again when i checked the cpu voltage after restarting the phone it was the default values i set it by +25 again. After 7-8 hours some apps like Es file Explorer, Whats app, uc browser stopped working (saying like whats app is not responding) i was unable to move some content from phone to sd card. Other functions like settings, dialer etc. Was working. Phone didn't connect to pc. Neither restarted nor power off (restarting and shutting down.) after restarting the cpu voltage was more then the default values. See screenshots sir
Click to expand...
Click to collapse
Really strange. What ROM do you use? And build date.