I have a Nexus S with CM7.1 and I am using the Glados Kernel v1.10 BFS.... I have my clock speed from 100-1000 on conservative... my questions are, what does this do? How do I do it? And how much battery life can I usually save? I searched it up, and I haven't really found too much stuff in depth. Thanks
Sent from my Nexus S
I'm not sure anyone's even done any extensive testing, but I can tell you that kernels such as the Trinity SEUV kernel have a serious increase in batt life.
I'm talking 8+ hrs extra probably, at least. Now each person is different, so light users like myself will benefit more, but the difference is definitely noticeable.
That being said, it depends on the kernel you use, and how often you use your phone.
nickmv said:
I'm not sure anyone's even done any extensive testing, but I can tell you that kernels such as the Trinity SEUV kernel have a serious increase in batt life.
I'm talking 8+ hrs extra probably, at least. Now each person is different, so light users like myself will benefit more, but the difference is definitely noticeable.
That being said, it depends on the kernel you use, and how often you use your phone.
Click to expand...
Click to collapse
In the building I go to school in has nearly no service. I get edge at most when I find a spot, I had GPS on, brightness mid and all the same clock speeds.... my Vibrant got more battery life with the same clock speed on CM7, I had 27 when I left, I usually get 60something on my Vibrant. So what should I do, and how can I underclothing my device using setcpu?
Sent from my Nexus S
unvervolting , as you can see from this word , under --- voltage
battery output juice to hardware such as CPU , screen , antenna ... etc
let me make an exemple , let's assume one battery has "1500" juice , if you output 50 juices per hour , then you can last about 30 hours , follow me ?
unvervolting reduces this output juice , let's say , down to 45 juice (you can not reduce too much due to stability and something like that) , then you battery can last about 33.33 hours , this additional 3.33 hours comparing to 30 hours , is extra battery life you got by undervolting .
of course this is not exactly how it works , but more or less, i think you can take the idea of it.
duration of your battery is very much depending on your usage.
3G data connection and GPS are battery killer , i have brainmaster's MIUI + franco kernel , 100% battery = 2 hours 3G data = 1.5 hours GPS navagation.
Oops wrong thread
qtwrk said:
unvervolting , as you can see from this word , under --- voltage
battery output juice to hardware such as CPU , screen , antenna ... etc
let me make an exemple , let's assume one battery has "1500" juice , if you output 50 juices per hour , then you can last about 30 hours , follow me ?
unvervolting reduces this output juice , let's say , down to 45 juice (you can not reduce too much due to stability and something like that) , then you battery can last about 33.33 hours , this additional 3.33 hours comparing to 30 hours , is extra battery life you got by undervolting .
of course this is not exactly how it works , but more or less, i think you can take the idea of it.
duration of your battery is very much depending on your usage.
3G data connection and GPS are battery killer , i have brainmaster's MIUI + franco kernel , 100% battery = 2 hours 3G data = 1.5 hours GPS navagation.
Click to expand...
Click to collapse
At what level should I start undervolting? I have it at 800mhz with 1125MV on lazy, is that fine to start with? I keep rising it each time it crashes on me( I started from 1025, worked my way up when I got random freezes). Do you recommend another kernel or something? I want the most power with the most performance. I heard Trinity was good but I may need to revert back to stock because the thread advised me to flash from stock for the most promising experience.
Sent from my Nexus S
Smokexz said:
At what level should I start undervolting? I have it at 800mhz with 1125MV on lazy, is that fine to start with? I keep rising it each time it crashes on me( I started from 1025, worked my way up when I got random freezes). Do you recommend another kernel or something? I want the most power with the most performance. I heard Trinity was good but I may need to revert back to stock because the thread advised me to flash from stock for the most promising experience.
Sent from my Nexus S
Click to expand...
Click to collapse
Here are my settings, once again, good starting point.
http://forum.xda-developers.com/showpost.php?p=19258876&postcount=1889
Some users reported that they had to bump 100 and 200MHz to 900mv and 400MHz to 950mv. To each their own, we all have different phones.
i have been doing affect of various variables including uv on battery life...
by changing one variable at the time..
in my testin.. undervolting actually made battery drain worse...
http://caleb1783.tistory.com/258
polobunny said:
Here are my settings, once again, good starting point.
http://forum.xda-developers.com/showpost.php?p=19258876&postcount=1889
Some users reported that they had to bump 100 and 200MHz to 900mv and 400MHz to 950mv. To each their own, we all have different phones.
Click to expand...
Click to collapse
Sent from Divinus Nexus S...
I'm sorry, but I fail to see where exactly you've proven that undervolting gives a higher battery drain in those tests.
Your methodology isn't scientific enough, although decently documented you have different usage patterns depending on the day. Sometimes you're playing a game and browsing the internet, others you're just idling all day.
On the undervolt test with Franco 25112011 kernel, your undervolt isn't even stable, leading to a reboot during a game and a battery stats "bug". Your screen was on 26 minutes more. Just the fact your undervolt isn't stable will make your battery drain faster. There's not only reboots and force closes as symptoms to an unstable undervolt.
The good way to test it would be by using a much more controlled environment and test patterns. Airplane mode can be used so as not to suffer from a bad reception or receive text messages/calls, a task (or multiple tasks) can be ran for a very specific amount of time, no user input other than starting the task and stopping the task should be done and the undervolt should be deemed stable.
Anyway, I can and will vouch for undervolting components, whether on a smartphone or a computer. I'm sure Trinity kernel users would agree too.
Smokexz said:
At what level should I start undervolting? I have it at 800mhz with 1125MV on lazy, is that fine to start with? I keep rising it each time it crashes on me( I started from 1025, worked my way up when I got random freezes). Do you recommend another kernel or something? I want the most power with the most performance. I heard Trinity was good but I may need to revert back to stock because the thread advised me to flash from stock for the most promising experience.
Sent from my Nexus S
Click to expand...
Click to collapse
personally , i don't use undervolting , because it doesn't really effect too much on battery life
i didn't actually try , but i think undervolting could give you maximo extra few hours of battery life .
i'm using franco kernel , and 100 - 1000 with lazy governor
you minim should be 100 , 800 is not necessary
and for 1 GHz CPU , handle normal processing is enough
and i do think , that screen takes more juices than CPU ...
----------------------------------
i suggest you should try my way , buy an extra battery piece , then you won't worry about battery life any more ...
like me , i have to use phone very carefully back the time i didn't have second battery , sometimes i got out home about 8:00 AM ,and got back like 8:00 PM , when i back home , battery is nearly dead ... less than 10% .... = =
but now , i have second battery , i can use my phone whatever and whenever i want ...
i am in Spain , battery cost me 8 euros , if you can't find Nexus S battery , you can also buy Samsung i900's battery.
watch out , i900 , not i9000 , it's same battery , can be pluged-in in battery slot.
so , why did you waste days and days to search , to test , to set , to ask in order to get more battery if you can solve this problem with only 8 euors ???
but ... for real , these undervolting or overclock or underclock or what , does give you , hmm , how to say ? sense of fufillment , it's kinda good ^^
Some people enjoy travelling light, not having extra peripherals in their pockets and such. I already have enough stuff with my phone, keys and money clip without wanting to bring a battery somewhere in my dressy pants.
I read somewhere (and i think it was in this forum) that for the Nexus S the profile in SetCPU should be ondemand or conservative. I'm running Koush's Alpha 12, SetCPU "ondemand" and JuiceDefender Ultimate on "balanced". I've been on that for a week or so. I think the battery life is better than what i had running stock. I'm okay when the phone can make it through a day (like 16 hours) with normal use. I charge it at night anyway.
n00bfuscator said:
I read somewhere (and i think it was in this forum) that for the Nexus S the profile in SetCPU should be ondemand or conservative. I'm running Koush's Alpha 12, SetCPU "ondemand" and JuiceDefender Ultimate on "balanced". I've been on that for a week or so. I think the battery life is better than what i had running stock. I'm okay when the phone can make it through a day (like 16 hours) with normal use. I charge it at night anyway.
Click to expand...
Click to collapse
well , i think it depends on what kernel you use
some kernel's author would suggest what's best for his kernel.
also juicedefener or something , it's most likely by automatically shut down your unnecessary functions like GPS BT WIFI 2G/3G ...etc in order to save battery life.
i have been trying some of them , doesn't gimme much effect , probably it's just psychologic effect, you know , people would see what they want to see , also i have seen one application (Antutu something , i don't remember exact name) that reduces power output to hardware in order to save battery life , i think only that kinda applications can acutally save power...
---------- Post added at 09:03 PM ---------- Previous post was at 08:59 PM ----------
polobunny said:
Some people enjoy travelling light, not having extra peripherals in their pockets and such. I already have enough stuff with my phone, keys and money clip without wanting to bring a battery somewhere in my dressy pants.
Click to expand...
Click to collapse
i know , i do that when i have time , it does gimme sense of fulfillment , just like watch your work to be done .
it isn't about results , it's about journey you have been through
i don't know man , battery's size is just about 4.5 x 3.5 x 0.5 cm ... you really don't have that space for battery ... ?
qtwrk said:
well , i think it depends on what kernel you use
some kernel's author would suggest what's best for his kernel.
also juicedefener or something , it's most likely by automatically shut down your unnecessary functions like GPS BT WIFI 2G/3G ...etc in order to save battery life.
i have been trying some of them , doesn't gimme much effect , probably it's just psychologic effect, you know , people would see what they want to see , also i have seen one application (Antutu something , i don't remember exact name) that reduces power output to hardware in order to save battery life , i think only that kinda applications can acutally save power...
---------- Post added at 09:03 PM ---------- Previous post was at 08:59 PM ----------
i know , i do that when i have time , it does gimme sense of fulfillment , just like watch your work to be done .
it isn't about results , it's about journey you have been through
i don't know man , battery's size is just about 4.5 x 3.5 x 0.5 cm ... you really don't have that space for battery ... ?
Click to expand...
Click to collapse
Left pocket has my keys, my money clip with my cards and a pack of gum. Right pocket has my phone. Can't put anything worthy in back pockets, even less in dress pants.
What are common issues in installing Trinity over a kernel? I have Glados kernel so what would the side effects be?
Sent from my Nexus S
Smokexz said:
What are common issues in installing Trinity over a kernel? I have Glados kernel so what would the side effects be?
Sent from my Nexus S
Click to expand...
Click to collapse
it depends , look over your older kernel isntall zip file , check out if they put any files in directions (/system/lib , /system/modules , /system/vendor ...etc) , if so , delete them manually or check your new kernel zip file if it will overwrite the same named file ,in that case you don't have to detele these same named file because they will automatically be overwritten, otheriwse you do have to delete thoes file which won't be deleted or overwritten automatically.
...
i always just directly flash it ... if comes problem i just reinstall the ROM in order to get clean system and then flash the kernel.
some kernel like GLADOS and FRANCO has script to clear older files
but , anyway , back up before install any thing that could effect on system.
---------- Post added 14th December 2011 at 12:02 AM ---------- Previous post was 13th December 2011 at 11:58 PM ----------
polobunny said:
Left pocket has my keys, my money clip with my cards and a pack of gum. Right pocket has my phone. Can't put anything worthy in back pockets, even less in dress pants.
Click to expand...
Click to collapse
= = bro , doesn't your cloth have pocket ?
well , if you have protective case and screen protector on your phone , you can just put battery together with it
and you can put battery with your keys and other things.
qtwrk said:
it depends , look over your older kernel isntall zip file , check out if they put any files in directions (/system/lib , /system/modules , /system/vendor ...etc) , if so , delete them manually or check your new kernel zip file if it will overwrite the same named file ,in that case you don't have to detele these same named file because they will automatically be overwritten, otheriwse you do have to delete thoes file which won't be deleted or overwritten automatically.
...
i always just directly flash it ... if comes problem i just reinstall the ROM in order to get clean system and then flash the kernel.
some kernel like GLADOS and FRANCO has script to clear older files
but , anyway , back up before install any thing that could effect on system.
---------- Post added 14th December 2011 at 12:02 AM ---------- Previous post was 13th December 2011 at 11:58 PM ----------
= = bro , doesn't your cloth have pocket ?
well , if you have protective case and screen protector on your phone , you can just put battery together with it
and you can put battery with your keys and other things.
Click to expand...
Click to collapse
Yeah I just did that and it broke the wifi. I went to factory settings and installed Trinity, going through my normal routine tomorrow and going to see how long the battery life goes, apparently the performance is great at 880mhz and the voltage is pretty low.
Sent from my Xoom
qtwrk said:
it depends , look over your older kernel isntall zip file , check out if they put any files in directions (/system/lib , /system/modules , /system/vendor ...etc) , if so , delete them manually or check your new kernel zip file if it will overwrite the same named file ,in that case you don't have to detele these same named file because they will automatically be overwritten, otheriwse you do have to delete thoes file which won't be deleted or overwritten automatically.
...
i always just directly flash it ... if comes problem i just reinstall the ROM in order to get clean system and then flash the kernel.
some kernel like GLADOS and FRANCO has script to clear older files
but , anyway , back up before install any thing that could effect on system.
---------- Post added 14th December 2011 at 12:02 AM ---------- Previous post was 13th December 2011 at 11:58 PM ----------
= = bro , doesn't your cloth have pocket ?
well , if you have protective case and screen protector on your phone , you can just put battery together with it
and you can put battery with your keys and other things.
Click to expand...
Click to collapse
I sometimes have a dress shirt or a polo with an additional pocket. Nevertheless I like to travel light, buying a second battery, while a good idea, is a poor solution to an unoptimized system.
too much undervolting can and will cause more battery drain. there is a fine line that can be crossed from battery savings to battery loss. after a certain point, the phone will end up working harder to get where/what it needs because there isnt enough voltage, leading to the loss.
Smokexz said:
Yeah I just did that and it broke the wifi. I went to factory settings and installed Trinity, going through my normal routine tomorrow and going to see how long the battery life goes, apparently the performance is great at 880mhz and the voltage is pretty low.
Sent from my Xoom
Click to expand...
Click to collapse
you must know
this minim is for screen luck status , when you are using your phone , system/CPU will automatically change it to adapt your processing , but when you screen is off , CPU should be running at minim in order to save juices
Related
ive read that we arent suppose to use set cpu on these new roms because htc power manager is built in. im using damage 2.0.7.2 . where is this power manager at i cant find it?, i know duh, what am i missing is it possible to change it like set cpu?
this guys running set cpu on a nexus claims 50% battery after 13 hours of heavy use
http://htc-phones.net/tag/power-manager
so can set cpu be used on these new roms or not someone with some brains tell me the deal once and for all please thanks
if i'm not mistaken.. htc power manager is only in sense roms.
HTC's PM is integrated in to the kernel, it's not an application that you run... which is why it works better. The only 2.1 rom out there that would even be capable of turning off HTC's PM would be Fresh Toast (well now darch's new one too) but we left it on in Fresh Toast for the time being because it works better. The only benefit to setcpu is if the phone is overclocked because it allows you to manually throttle it down if you prefer. New version of Fresh Toast will have an adjustable overclock so setcpu will actually be beneficial in that release when it comes.
flipzmode said:
HTC's PM is integrated in to the kernel, it's not an application that you run... which is why it works better. The only 2.1 rom out there that would even be capable of turning off HTC's PM would be Fresh Toast (well now darch's new one too) but we left it on in Fresh Toast for the time being because it works better. The only benefit to setcpu is if the phone is overclocked because it allows you to manually throttle it down if you prefer. New version of Fresh Toast will have an adjustable overclock so setcpu will actually be beneficial in that release when it comes.
Click to expand...
Click to collapse
ok thank you for that clarification.... cant wait for the new fresh toast
Bad--Dog said:
this guys running set cpu on a nexus claims 50% battery after 13 hours of heavy use
Click to expand...
Click to collapse
dude thats a fake base on my experience .. yea it dose help but not 13 hr and only 50% battery... my phone right now it say its almost full and its on battery for 1d 1h 39m. but it was on charger most of the day because i was home and it still says 1d 1h 39min on batt...... idk why it say that but if you need a pic or a video ill show you what mine say.....
but like i said it helps having set cpu and all the apps he states but not like he says ... come on 13h life and only 50% batt ... maybe he has a extended batt..
Hey Guys,
i'm using the newest Matr1x Kernel, v11.0, CFS
and NSCollab 1.0.60 with my Nexus S.
CPU govenor is Lazy, i/o sheduler is deadline. Deep Idle is on.
Min CPU is 100 MHz, Max is 800 MHz, standard voltage.
13 h of usage, 8 % battery left. How can i improve?
I wouldn't consider my usage of the phone as heavy, screen is off quite often, especially at work. At work i'm writing some texts, browse a little bit on facebook, write some **** on whatsapp. Phone ist mostly off, i mostly respond to messages i get.
After work i browse some, play some games (Zenonia at the moment ), download something on wifi etc. Not too much in my opinion. Still battery quite sucks.
So my questions are:
1. Why is my battery life that bad? Phone is 1 week old, so battery shouldnt be broken...
2. I would like to know, if anyone can tell me about voltages? I would like to reduce voltages, but i'm a nooby and don't want to "test" it, cause i don't want to break the phone
Can anyone tell me, how much i can reduce arm voltage/int voltage? I'm speaking of my 100 MHz/800Mhz setting, it's still quite fast and i want better battery life, i think reducing voltages could help.
I'm open to any suggestion about getting a better battery life at best i would like the nexus to live 2 day without charges, with medium usage, if that is even possible.
cheers
All you can do is TEST there is NO one size fits all
but generally you can go about -25 across the board .. someone with more knowledge than me can correct me if i'm wrong =]
i get +26 hours easily on moderate to heavy use but my roms don't last for more than 10 hours
Thanks for your answer.
Does anyone else have any idea about the quite bad battery life?
I forgot to mention that i use Go Launcher Ex with a Touchwiz 4 Theme and the Go Keyboard, but i don't think they suck up all the energy :/
pisses me off quite a bit, 26h+ with moderate to heavy usage would be a dream!
Like it's now i need to charge it every day, and on weekend twice, once before i go, and over night (well while i sleep, doesnt need to be night
Stothex said:
Hey Guys,
i'm using the newest Matr1x Kernel, v11.0, CFS
and NSCollab 1.0.60 with my Nexus S.
CPU govenor is Lazy, i/o sheduler is deadline. Deep Idle is on.
Min CPU is 100 MHz, Max is 800 MHz, standard voltage.
13 h of usage, 8 % battery left. How can i improve?
I wouldn't consider my usage of the phone as heavy, screen is off quite often, especially at work. At work i'm writing some texts, browse a little bit on facebook, write some **** on whatsapp. Phone ist mostly off, i mostly respond to messages i get.
After work i browse some, play some games (Zenonia at the moment ), download something on wifi etc. Not too much in my opinion. Still battery quite sucks.
So my questions are:
1. Why is my battery life that bad? Phone is 1 week old, so battery shouldnt be broken...
2. I would like to know, if anyone can tell me about voltages? I would like to reduce voltages, but i'm a nooby and don't want to "test" it, cause i don't want to break the phone
Can anyone tell me, how much i can reduce arm voltage/int voltage? I'm speaking of my 100 MHz/800Mhz setting, it's still quite fast and i want better battery life, i think reducing voltages could help.
I'm open to any suggestion about getting a better battery life at best i would like the nexus to live 2 day without charges, with medium usage, if that is even possible.
cheers
Click to expand...
Click to collapse
I can only give you my undervolt values. Maybe they'll fit you, maybe they won't.
http://forum.xda-developers.com/showpost.php?p=19258876&postcount=1889
come on , be happy with what you have
i even have to use 2 batteries if in heave use !
try set display on auto-change or medium brilliantness
peronally , i think display is taking away more juice besides CPU...
kill GPS BT 2G/3G WIFI when you don't need them , specially GPS
and if you are not in hurry , use 2G data connection instead of 3G, because 3G took double even trouble juice then 2G
also , maybe some applications running at high CPU usage background , but i think this is highly unlikely
forgot to mention , also kill NFC
qtwrk said:
come on , be happy with what you have
i even have to use 2 batteries if in heave use !
try set display on auto-change or medium brilliantness
peronally , i think display is taking away more juice besides CPU...
kill GPS BT 2G/3G WIFI when you don't need them , specially GPS
and if you are not in hurry , use 2G data connection instead of 3G, because 3G took double even trouble juice then 2G
also , maybe some applications running at high CPU usage background , but i think this is highly unlikely
forgot to mention , also kill NFC
Click to expand...
Click to collapse
Hey, Thanks for you answer.
I forgot to mention.
Wifi and GPS are off, only turning it on if i need it(and that's rare). NFC is always off, i don't need it. Brightness is off auto-change and instead on the lowest value i can chose in the settings (still bright enough)
I'm checking RAM and CPU usage from time to time, so there shouldn't be the problem. Well i have 3g on all the time, but still, even then shouldn't i be able to get 20h+ or so?
What i also forgot to mention, i've the SLCD, the i9023 version. I know it has higher battery usage because of the display, but well, i think 13h is a bit low.
@polobunny: thanks, i will look into it
Stothex said:
Hey, Thanks for you answer.
I forgot to mention.
Wifi and GPS are off, only turning it on if i need it(and that's rare). NFC is always off, i don't need it. Brightness is off auto-change and instead on the lowest value i can chose in the settings (still bright enough)
I'm checking RAM and CPU usage from time to time, so there shouldn't be the problem. Well i have 3g on all the time, but still, even then shouldn't i be able to get 20h+ or so?
What i also forgot to mention, i've the SLCD, the i9023 version. I know it has higher battery usage because of the display, but well, i think 13h is a bit low.
@polobunny: thanks, i will look into it
Click to expand...
Click to collapse
When i got my phone, the battery sucked. But after a week or so after some battery cycles it got better. So i advice you just to wait.
I don't use auto brightness, No auto sync but i have data always tuned on. I am able to get 10-20 hours with moderate usage.
Stothex said:
Hey, Thanks for you answer.
I forgot to mention.
Wifi and GPS are off, only turning it on if i need it(and that's rare). NFC is always off, i don't need it. Brightness is off auto-change and instead on the lowest value i can chose in the settings (still bright enough)
I'm checking RAM and CPU usage from time to time, so there shouldn't be the problem. Well i have 3g on all the time, but still, even then shouldn't i be able to get 20h+ or so?
What i also forgot to mention, i've the SLCD, the i9023 version. I know it has higher battery usage because of the display, but well, i think 13h is a bit low.
@polobunny: thanks, i will look into it
Click to expand...
Click to collapse
no really ,my phone is i9023 as well , by the way , it's Super Clear LCD , SLCD is other thing of SONY.
SA screen only saves power when it is on dark color such as black , grey etc, when it is on white color , it takes juices same as(even more ? don't know for sure) Super Clear LCD , this has no different ,also you may noticed that default wall paper of Nexus S is dark color , that's why
back the time when i was using stock , i could easy hang on a day , but ever since i change to MIUI and brought second battery ... i have to use second battery on MIUI if my usage is same as the time i was using stock
---------- Post added at 04:25 PM ---------- Previous post was at 04:23 PM ----------
about 3G ,
i have some power saver like applications , which have function of estimated work time
it shows , at this moment , 59% battery = 3G internet 1 hour and 39 minutes ,
other one shows 2 hours and 12 minutes
there may be some variants but ... you know , 59% power only last about 2 hours of 3G ...
---------- Post added at 04:27 PM ---------- Previous post was at 04:25 PM ----------
you should have try stock first , because in my opinion , stock has longest battery life
i haven't used NSCollab , so i can't say anything about it ...
qtwrk said:
no really ,my phone is i9023 as well , by the way , it's Super Clear LCD , SLCD is other thing of SONY.
SA screen only saves power when it is on dark color such as black , grey etc, when it is on white color , it takes juices same as(even more ? don't know for sure) Super Clear LCD , this has no different ,also you may noticed that default wall paper of Nexus S is dark color , that's why
back the time when i was using stock , i could easy hang on a day , but ever since i change to MIUI and brought second battery ... i have to use second battery on MIUI if my usage is same as the time i was using stock
---------- Post added at 04:25 PM ---------- Previous post was at 04:23 PM ----------
about 3G ,
i have some power saver like applications , which have function of estimated work time
it shows , at this moment , 59% battery = 3G internet 1 hour and 39 minutes ,
other one shows 2 hours and 12 minutes
there may be some variants but ... you know , 59% power only last about 2 hours of 3G ...
---------- Post added at 04:27 PM ---------- Previous post was at 04:25 PM ----------
you should have try stock first , because in my opinion , stock has longest battery life
i haven't used NSCollab , so i can't say anything about it ...
Click to expand...
Click to collapse
I used stock for the first week, it wasn't better imho, atleast that's what my feeling says didn't look at the actual times i lasts with stock :O
but feels better with nscollab
About the display, thought SLCD was short for Super Clear LCD, well atleast you got what i meant
I thought about power saving apps too, wouldn't be bad if phone does only 2g if the screen is off etc, but first i wanted to get a good rom/kernel and settings
i think i will try ICS stock rom if its out, look if that gets me a better battery life, or then flash around till i'm satisfied
The Problem With The S4 That It Has More Cpu Then It Needs. It Doesnt Have To Use It Cpu Up To 1600 Mhz, But It Automatically Does,
It Works Perfectly At 2 Cores And 800 Mhz, No Difference, Only A Better Experience , Please Read On
Ok Guys, This Will Be The Battery Discussion Page For The S4, We Will Be Doing Kernel And Under Volting Test, And Ways To Save Battery,
We Will Post Battery Records Here, And Many Other Things, This Is How It Works
I Will Post Mine Tomorrow After Fully Charging
Must Be Fully Charged Till 5 Percent Charge Without Pluging In Cable In Between,
And You Must Use Your Device As You Would Everyday
Install Cpu Spy
This Is The Layout You Fill In For Your Post
ROM:
KERNEL:
CPU MIN:
CPU MAX:
CPU GOVERNOR:
CORES ONLINE:
CORES OFFLINE:
Click to expand...
Click to collapse
Information Of How You Used Your Phone During The Process
And Any Other Information Like The Apps You Have Installed, And The App You Use To Save Battery With, Or Your
App Alternatives For Better Battery Life
Attach Photos (screenshots) Of Your Battery Record, Stats, And On Screen Time Using The Stock App In The Settings
And Your Cpu Spy Page
"i For One Have 2 Cores Offline And Under Volted To 250-800 On Both Online Cores And Have The Ondemand Governor Activated, And I Havent Felt Performance Lost, Runs Temple Run And Subway Surfers Perfectly, And No Heat, Even If Im Charging With Wifi On And Im Downloading Something, Its Great
Seems to be a nice idea. But could you elaborate as on why the text is bold and you had to use capslock for 1/2 of it!?
@slind ok i fixed the post. i will be posting links to the posts who are great battery savers without loosing performance
So basically, we use an I9500 like an Ace or a Grand to get rid of heating and battery drains.. Andyou suggest that it won't result in performance loss. I'd suggest playing games that are more graphically intensive and not just Temple Run.. Try copying data from one memory card to another, or simply try running a Full HD Video. Also, check out web browsing or maybe multitasking, and you'll see where the performance dies out.
I think the fix should come in the upcoming releases of stock firmware by Samsung. By turning off a couple of cores, you're only going back a couple of years. I don't think I upgraded from the S3 to S4 for that reason.
cabloomi said:
The Problem With The S4 That It Has More Cpu Then It Needs. It Doesnt Have To Use It Cpu Up To 1600 Mhz, But It Automatically Does,
It Works Perfectly At 2 Cores And 800 Mhz, No Difference, Only A Better Experience , Please Read On
Ok Guys, This Will Be The Battery Discussion Page For The S4, We Will Be Doing Kernel And Under Volting Test, And Ways To Save Battery,
We Will Post Battery Records Here, And Many Other Things, This Is How It Works
I Will Post Mine Tomorrow After Fully Charging
Must Be Fully Charged Till 5 Percent Charge Without Pluging In Cable In Between,
And You Must Use Your Device As You Would Everyday
Install Cpu Spy
This Is The Layout You Fill In For Your Post
Information Of How You Used Your Phone During The Process
And Any Other Information Like The Apps You Have Installed, And The App You Use To Save Battery With, Or Your
App Alternatives For Better Battery Life
Attach Photos (screenshots) Of Your Battery Record, Stats, And On Screen Time Using The Stock App In The Settings
And Your Cpu Spy Page
"i For One Have 2 Cores Offline And Under Volted To 250-800 On Both Online Cores And Have The Ondemand Governor Activated, And I Havent Felt Performance Lost, Runs Temple Run And Subway Surfers Perfectly, And No Heat, Even If Im Charging With Wifi On And Im Downloading Something, Its Great
Click to expand...
Click to collapse
post some screenshots with your screen time.
@adyscorpius
everyone has there preferences and there needs in a phone. and there own settings. and this is a Battery discussion thread. we will be doing many performance and voltage mods, so everyone could choose the settings that suits them. now please dont post aggressive post like that, im not stupid. i know that my settings are very low.
but for my most played games and most used apps. it doesnt seem to effect my performance, so im comfortable with my settings
i had the phone for 2 weeks, happily showing off battery performance and then i asked myself again, why the heck i bought this phone in the first place? BECAUSE IT HAS REPLACABLE BATTERY!.. LOL.. how silly i am trying to squeeze that little drop of power out of the battery when I can double the battery just by getting another spare.
no need to turn off anything, no need to drop performance or screen brightness.. just pure enjoyment of the full potential without worrying battery problem.. just get a spare.
cabloomi said:
@adyscorpius
everyone has there preferences and there needs in a phone. and there own settings. and this is a Battery discussion thread. we will be doing many performance and voltage mods, so everyone could choose the settings that suits them. now please dont post aggressive post like that, im not stupid. i know that my settings are very low.
but for my most played games and most used apps. it doesnt seem to effect my performance, so im comfortable with my settings
Click to expand...
Click to collapse
I didn't mean to be aggresive and sorry if you felt like that. All I mean is, there is a limit to which you can undervolt/underclock your phone without losing the functionality or speed. While underclocking to 1.0 ghz or 1.2 ghz sounds kinda normal, going all the way down to 800 Mhz and that too only on two cores is like running Galaxy Ace Dual Core instead. Why would I want to spoil my S4 for it?
That is all that I meant. And the phone is normally shelling out a good day's use in normal usage. Why bother so much about battery really???
My S4 i9505 came with MDE ROM from the factory, apart from doing dirty flashes over dirty flashes, finally someone came up with a recovery which is working. So i've :
1. Formatted system , cache , dalvik
2. Loaded in Djembey's stock slim deodexed ME2 ROM.
3. Using PimpMyROM, did some moderately less aggressive tweaks.
4. Capped the Max frequency at 1674MHz. Interactive gov, Noop sched.
5. Fully charged and unplugged.
6. Fully on 3G . Gmail sync for calendars, contacts, mail, keep, notes. Moderately heavy on Gtalk and Whatsapp. Browsing news and websites.
Observed 4 hours screen time.
Almost 15 hours of total usage + standby (This doesn't mean much, screen time depicts usage time more)
The phone still feels warmer than S2, under operation.
I've yet to try faux kernel yet, but i doubt it would get much better than this. The physical limit i feel is on the CPU, HD AMOLEDs, and the modem itself under normal usage.
Feel free to comment.
Hi,
hope you may be able to help. I have been trying almost everthing to increase the music volume as the s4 does not drive my senheiser headphones as well I would like. Is it possible to increase the gain through a kernel mod somehow?
Wow you're really random. This thread isn't even remotely discussing about the issue you raised.
Try the omega ROM thread, see if the functionality list includes volume hack.
Sent from my GT-I9505 using xda app-developers app
How does one go about disabling two of the cores ? c:
I have Franco Kernal and Stock Rom + Root Any more tweeks for battery life?
Get better battery stats and see where your wake locks are and work on minimizing them.
Sent from my Nexus 5
markdapimp said:
I have Franco Kernal and Stock Rom + Root Any more tweeks for battery life?
Click to expand...
Click to collapse
i have been a faithful user of franco for over a year, stock clock speed, on demand, noop, and -25mv across the board was good.. but not great.
i have used it on Gnex, N4 and now N5....
i am now giving Faux a test run on my N5... slightly better batt life.. not saying to use either, just saying that in order to get the best, u have to try different things.. both kernels are great IMO
try by making changes for a day or two... get a feel for your phone.. when u make a change thats bad, batt life will be noticeable fast.. u will know
try companion apps like battery guru, battery wakelock indicator, and or greenigy...
just gotta keep an eye on what uses the most mobile data, and what wakes ur device the most... u want the phone to sleep well, which will give u more juice when being used.
rule of thumb, just because it feels faster, but gets hotter is no good... watch changes that make phone hotter... (like a car engine... too much gas or too little gas can increase combustion heat and the engine can detonate)
chaco81 said:
i have been a faithful user of franco for over a year, stock clock speed, on demand, noop, and -25mv across the board was good.. but not great.
i have used it on Gnex, N4 and now N5....
i am now giving Faux a test run on my N5... slightly better batt life.. not saying to use either, just saying that in order to get the best, u have to try different things.. both kernels are great IMO
try by making changes for a day or two... get a feel for your phone.. when u make a change thats bad, batt life will be noticeable fast.. u will know
try companion apps like battery guru, battery wakelock indicator, and or greenigy...
just gotta keep an eye on what uses the most mobile data, and what wakes ur device the most... u want the phone to sleep well, which will give u more juice when being used.
rule of thumb, just because it feels faster, but gets hotter is no good... watch changes that make phone hotter... (like a car engine... too much gas or too little gas can increase combustion heat and the engine can detonate)
Click to expand...
Click to collapse
In GravityBox [KK] There seems to be a Smart Radio is it any good?
chaco81 said:
i have been a faithful user of franco for over a year, stock clock speed, on demand, noop, and -25mv across the board was good.. but not great.
i have used it on Gnex, N4 and now N5....
i am now giving Faux a test run on my N5... slightly better batt life.. not saying to use either, just saying that in order to get the best, u have to try different things.. both kernels are great IMO
try by making changes for a day or two... get a feel for your phone.. when u make a change thats bad, batt life will be noticeable fast.. u will know
try companion apps like battery guru, battery wakelock indicator, and or greenigy...
just gotta keep an eye on what uses the most mobile data, and what wakes ur device the most... u want the phone to sleep well, which will give u more juice when being used.
rule of thumb, just because it feels faster, but gets hotter is no good... watch changes that make phone hotter... (like a car engine... too much gas or too little gas can increase combustion heat and the engine can detonate)
Click to expand...
Click to collapse
Great advice.
since i use my galaxy s6 for basic stuff , browser viber whatsapp , ebay , amazon , no games at all , can someone help me to undervolt and underclock my phone sisnce i dont need all his power , i like to to it to gain extra batterylife ,
i use arter kernel 8.2 and v11_exposed rom ....
i miss my old experia z3 with 8SOT and 2 days battery life
I get pretty good battery life on mine. Undervolt and underclock is the same thing. I don't understand why u would want to do this to a great phone. Buy a Nokia 3210 you should get loads of battery life and fast enough for you
My stand by time is easily 2 days just using basic things. I do like to use my phone so I do get 1 day which is good enough for me.
Check the wakelocks that should help way more the undervolting
bahmonkeys said:
I get pretty good battery life on mine. Undervolt and underclock is the same thing.
Click to expand...
Click to collapse
Not the same thing at all! Undervolting is more sensitive and gives better results although very risky!
Fullmetal Jun said:
Not the same thing at all! Undervolting is more sensitive and gives better results although very risky!
Click to expand...
Click to collapse
Ya I understand! I don't see the point in undervolting unless you have heat issues which would make it more stable. I know u can extend your battery life a small bit but its not like u well get days out of your battery by undervolting and underclocking.
The best thing is kill the apps that keeping your phone awake. That would save more battery but at the end of the day you will still be plugging your phone in to charger.
What they need to do is improve battery's
Agree, let your cpu/gpu handle its tasks. For others, maybe they preferred on doing this undervolting stuff etc.
Others wanted to freeze wakelocks, alarms, services just to lower battery usage.
I find it funny LoL *kidding I would not bother buying S6 at the first place if thats how you usually use a phone. But it is your choice
You could opt for units with larger battery capacity but with good SOTs and reviews.