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Just got my note I was wondering if people could share their tips on how to get great battery life on the note!
any tips (even the most basic) will help all us first time Android users
So share your tips, apps, settings, etc!
Sent from my GT-N7000 using XDA App
If you want to save max battery. Turn off 3G and only use 2G. Then lower brightness. Reduce frequency of app updates.
Those are the best tips. I keep brightness on auto. And I keep updates to once an hour for most things. It give me a solid day.
Sent from my Samsung Galaxy Note.
Thanks!
I downloaded setCPU and have it so that the processor goes down to 800mhz when the screen is off.
I am not sure if that is helping or not though.. still struggling with battery life.
Get JuiceDefender Ultimate. It helps to automatically turn off your Data Network and your wifi whenever your not using your phone, it reopens them periodically to check for any updates on ur apps. Smart app and it has saved me x2.3 of my battery life.
thanks!
Do you think juice defender ultimate is better than setCPU?
Disable fast dormancy. *#9900# and the select disable fast dormancy and then save.
Sent from my GT-N7000 using xda premium
Here are some tips for prelonging battery life:
1 - Don't use 100% screen brightness at all times - 50-60% is enough, only increase it when you need to then lower it again.
2 - If your planning to use the phone for long periods, 30 minutes or more constant use then once again use 25% or so brightness
3 - When browsing/surfing the net use the lowest possible brightness as this is the biggest battery killer. Unfortunately our AMOLED screens suck a lot of juice when displaying white...
4 - Try to keep most, if not all applications to manual updates only. Otherwise decrease the update frequency.
5 - Use an alternative launcher. I find for example using LauncherPro uses less resources/cpu/ram than the default touchwizz launcher. Therefore using less ram/cpu saves battery!
6 - If your gonna game for hours then I suggest 0% brightness!
7 - Last but least watch your apps. Some apps are poorly optimized/coded and can take up a lot of ram and cpu which then eats away at your battery!
In my case, disabling fast dormancy helps save some battery. Tough not to a big extent.
Use Screen Adjuster or Voodoo display filter to further lower screen brightness.
Install and use app that has a night mode. Eg, config opera mobile to use a user css to render white text on black background.
Hey,
Before you should know that android collects statistics on your battery in order to "learn" its behavior so within the first days of use you will see a constant improvement if you battery performance.
there are also a few apps that runs in background and has the annoying habit to drain your battery:
wifi sharing
wi-fi sharing manager
social hub
try to disable those apps using gemini app manager or titanium backup.
Thanks for the great tips. My battery lasted almost 19 hours ever since I did everything everyone has mentioned!
Sent from my GT-N7000 using XDA App
uneek14 said:
Thanks!
I downloaded setCPU and have it so that the processor goes down to 800mhz when the screen is off.
I am not sure if that is helping or not though.. still struggling with battery life.
Click to expand...
Click to collapse
Capping the max CPU speed does not help battery life.
Sent from my Transformer TF101
this will also help you understand battery life
http://batteryuniversity.com/
Gary13579 said:
Capping the max CPU speed does not help battery life.
Sent from my Transformer TF101
Click to expand...
Click to collapse
How so? I've heard some people on YouTube say they save battery this way..it was the only reason I downloaded setCPU...what are your thoughts?
Sent from my GT-N7000 using XDA App
When screen is off, the cpu frequency is reduced anyway. Thats the advantage of sleep.
Sent from my GT-N7000 using XDA App
bud.de said:
When screen is off, the cpu frequency is reduced anyway. Thats the advantage of sleep.
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
How much is it reduced to?
kanej2006 said:
How much is it reduced to?
Click to expand...
Click to collapse
Just enough to receive calls, sms, messages, etc. What was it, 200mhz?
uneek14 said:
How so? I've heard some people on YouTube say they save battery this way..it was the only reason I downloaded setCPU...what are your thoughts?
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
YouTube is in no way a reliable source of information when it comes to technology. Unfortunately, neither are these forums, as witnessed by the masses of people that consistently state underclocking saves battery. I've posted about this several times before, and it seems no one ever listens or trusts me, so I'll try to lay it out as simple as I can. This effect is very well known by old school Linux nerds that would push their notebooks to get longer battery lives. Intel calls this effect HUGI -- Hurry Up and Get Idle. It essentially states that the faster a CPU runs, the more energy it consumes, but it *also* finishes it's work faster. Finishing work faster is important as it means that the CPU can go back to it's "Idle" state faster. The idle (or sleep) state uses virtually zero energy. Let me see if I can pull up the voltage table for a phone... here, found this for the Sprint Nexus S 4G and it looks to be accurate based off my memory of the CPU.
1000mhz - 1.25v
800mhz - 1.20v
400mhz - 1.05v
200mhz - 0.95v
100mhz - 0.95v
Now, let's say we have a task that takes 10 seconds to complete at 1000 MHz. 10 seconds times 1.25v is 12.5v (I know, I know, voltage doesn't work this way -- but it's a good enough approximation to demonstrate this effect (and it's to scale!) and I'm too tired to explain volt vs amp vs watt, it's 5am here). At 100 MHz, though, the *same exact task* would take 100 seconds! 100 seconds times 0.95v is, wow, 95v! By capping your CPU to 100 MHz (10% of max), you are effectively using (95/12.5=) 660% more energy to do the same task.
Now, there are scenarios where underclocking can help you, such as when your phones CPU is running at 100% 24/7 because of ****ty applications or leaked wakelocks. Although underclocking does appear to somewhat fix this, it's a complete ****ing hack and won't give you anywhere near the amount of battery life that you'd get by uninstalling the ****ty app and letting your phone go to sleep.
Make sense?
Sent from my Transformer TF101
Wow! Thanks! yeah it does make sense! I guess I should uninstall setCPU...I'm not sure what else its used for
thanks again
Sent from my GT-N7000 using XDA App
zkyevolved said:
Just enough to receive calls, sms, messages, etc. What was it, 200mhz?
Click to expand...
Click to collapse
That's great, a very efficient way to save battery...
So it's basically like a modern pc running a core i5/i7 that runs at 2.5GHz when idle or when no power is needed. However when power is needed the intel Turbo boost kicks in & increases clock speed to 4.2GHz or even higher depending on what the user set it to.
In my case my PC cpu idles at 3.4GHz & when gaming or video editing it boosts to 4.7GHZ which I've manually set it to.
Anyone else notice ICS uses quite a bit more battery? I have an official extended battery too. Any ICS battery saving tips?
Sent from my DROID BIONIC using xda premium
I thought the same, but I think its because we're not used to have all the blur running in the background.
Sent from my DROID BIONIC using Tapatalk 2
That and since you have a new OS you are turning your phone on more just to look at it and play around haha
And app caches haven't built up
Sent from my DROID BIONIC using Tapatalk 2
I really need a few days to get a good handle on how much the battery usage has changed but there are a few things to keep in mind....
- Cpu speed max was increased by 200Mhz to 1.2Ghz
- ICS uses GPU acceleration which may impact battery life
- These are leaks so not everything is release ready and there may be a few bugs
- I noticed generally a bit more idle cpu usage so this will lower battery life
- Radios were updated (both 3/4g) so this may impact battery life
- Big kernel update so there may be issues in the new kernel
All in all i'd say check your battery usage and see if anything stands out, maybe disable any bloatware you don't use. I also noticed there is a display dimming option under system settings, display, brightness....that might help a little?
My phone was heating up a little and the battery life seemed a little crappy on 2233. I switched the governor from hotplug to on demand with setcpu. Seems to have helped battery life and the phone is running much cooler.
Sent from my DROID BIONIC using xda premium
mikecheat04 said:
That and since you have a new OS you are turning your phone on more just to look at it and play around haha
Click to expand...
Click to collapse
^This. I'll give it a week to see how everything goes before I judge battery.
dpw2atox said:
I really need a few days to get a good handle on how much the battery usage has changed but there are a few things to keep in mind....
- Cpu speed max was increased by 200Mhz to 1.2Ghz
- ICS uses GPU acceleration which may impact battery life
- These are leaks so not everything is release ready and there may be a few bugs
- I noticed generally a bit more idle cpu usage so this will lower battery life
- Radios were updated (both 3/4g) so this may impact battery life
- Big kernel update so there may be issues in the new kernel
All in all i'd say check your battery usage and see if anything stands out, maybe disable any bloatware you don't use. I also noticed there is a display dimming option under system settings, display, brightness....that might help a little?
Click to expand...
Click to collapse
My max cpu speed is still 1ghz on the newest ics leak. How do some people have 1.2?
No idea...I'm at 1.2Ghz
Steve125 said:
My phone was heating up a little and the battery life seemed a little crappy on 2233. I switched the governor from hotplug to on demand with setcpu. Seems to have helped battery life and the phone is running much cooler.
Sent from my DROID BIONIC using xda premium
Click to expand...
Click to collapse
What should scheduler be set on?
I left it set to the default setting
Sent from my DROID BIONIC using xda premium
dpw2atox said:
I really need a few days to get a good handle on how much the battery usage has changed but there are a few things to keep in mind....
- Cpu speed max was increased by 200Mhz to 1.2Ghz
- ICS uses GPU acceleration which may impact battery life
- These are leaks so not everything is release ready and there may be a few bugs
- I noticed generally a bit more idle cpu usage so this will lower battery life
- Radios were updated (both 3/4g) so this may impact battery life
- Big kernel update so there may be issues in the new kernel
All in all i'd say check your battery usage and see if anything stands out, maybe disable any bloatware you don't use. I also noticed there is a display dimming option under system settings, display, brightness....that might help a little?
Click to expand...
Click to collapse
Just tried the display dimming option and data disconnected. May have been a coincidence, but I went back and turned it off and data came back.
Hold down the home key and look at how many apps are running in the background. Swype to close them. They are also eating battery. You can also use the built-in smart actions app to shut off data and other power users when phone isn't in use.
Sent from my DROID BIONIC using Tapatalk 2
I'm getting 20 hours plus (knock on wood) on the 2333 ICS leak try recalibrating your battery.
Sent from my DROID BIONIC using XDA
waffleb051 said:
I'm getting 20 hours plus (knock on wood) on the 2333 ICS leak try recalibrating your battery.
Sent from my DROID BIONIC using XDA
Click to expand...
Click to collapse
My battery life is MUCH worse from stock 905 and the battery stats are correct. My Andorid OS is using more battery than display which is a first.
I'll snap a pick when the day ends for me to show my battery life
Sent from my DROID BIONIC using XDA
I get the same amount of battery life as before. I tested by doing my normal routine at work. Checked the time, news, watched an episode on Netflix on lunch and checked Twitter a few times. Ended up showing 70% at the end of my day's shift. Though I should note my CPU is still 1GHz.
I set up by going back to 902, OTA to 905, than SR to 2233, in case anybody is wondering.
Why would you be surprised that the ics uses more battery? It runs at 1.2ghz. Try using smart actions app, its actually pretty neat and can help you save battery by automatically turning off wifi, sync or whatever you want it to do by either time, or a variety of other triggers. I use it to switch off data when i get off work and switch wifi on, and to turn volumes down, brightness down, gps off during the night, and etc, etc.
Sent from my DROID BIONIC using xda app-developers app
I just applied the 229 leak and while I haven't noticed many changes over 2233, I did notice that the overall OS ram usage is down and my idle cpu usage is lower. I am still testing the battery usage with it but it seems to be a bit better as a result.
On 2233 my cpu idle usage was in the 400s with occasional spikes lower/higher. On 229 my cpu idle usage is in the 300s with semi-frequent spikes to the 400s so a pretty noticable improvement.
Hmmm.... that is a pretty good improvement. Is the kernel running at 1.2ghz?
sent from my DROID BIONIC via XDA App
I've always been a big fan of undervolting. These are the lowest voltages I can get stable at these common speeds. I found I can underclock the Matr1x kernel further than some others I have tried for some unknown reason. How low have you been able to go? Also, what programs do you use to test stability? So far, I have been running Antutu test completion as a measure of stability. Any suggestions otherwise?
288MHz - 650mv
1.02Ghz - 800mv
1.51Ghz - 1000mv
ROM: Bionic AOSP V3
Kernel: Matr1x 6.5
Noob question~ Why do people undervolt?
WarToilet said:
Noob question~ Why do people undervolt?
Click to expand...
Click to collapse
To increase battery life,
The Long answer is that the CPU has a number of parameters where Clockspeed (MHz) and voltage (mV) are two. Clockspeed, well that is speed. Voltage is related to the amount of energy provided to the cpu, undervolting means that you feed the CPU less juice but demand that it runs at the same clocks. You are essentially starving the CPU,it uses less energy, but can become unstable if the voltage is insufficient to maintain operations. Manufactures always have extra voltage as a safety margin so power users can check their CPU bin (slow, normal, fast or faster) and lower voltages step by step until they crash the phone during a stress test, increase the voltage slightly and boom, your phone uses less battery power while being just as fast.
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
estallings15 said:
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
Click to expand...
Click to collapse
Took words from my mouth. This this and this. It reduces heat, which in turn reduces battery use. UV by itself doesn't save a lot of battery, it's the consequences of it. I'm normally not a fan of UV, but with current N4 sw/fw it NEEDS it. It's way too high.
Interesting observation. As of recently my phone jumps up by 3-5c from 37-38 hover. Never used to do it before, not until i got it up to 50c for about half an hour last week. Previously it would stay steadily at 37-38, now it spikes up now and again during use. What's interesting about is that once it goes over 40c battery use increases drastically. So i wonder if people that have really good battery life don't have phones that go over that temp often and vice versa.
I haven't played around with the values too much yet, just a -100mV across the board. This seems to work just fine, so I might experiment some more..
Using Franco test-r69 at the moment.
Sent from my Nexus 4 using xda premium
I undervolt to prevent heating like others say. My Antutu scores drop like a rock when I'm at stock clockspeeds mostly likely due to thermal throttling. Now I can run it repeatedly without having scores drop. It saves battery and runs faster while running games even for very short periods of time, so I am a big fan of undervolting. :good:
Undervolt to reduce power usage, think of the stock voltage as normally being more than is required, think of running for a bus yet you have 2 minutes why waste energy when you can walk and still make it .
Undervolt for less power usage and less heat produced meaning battery performance is better (cooler battery is a more efficient one) and performance is up as you avoid any thermal limits in place .
Great stuff undervolting, I have managed to get -150mV across the board ( 1.5ghz @ 1000mV) and 288mhz is 162.5mV .
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
The more the heat, the faster the battery drains. Since undervolting decreases heat, im sure it should increase battery life. Maybe not for browsing or calling, but playing a heavy 3D game.
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
zakoo2 said:
how can you guys undervolt? is there an app for that? i bought Franco's kernel updater app, but there's no option to undervolt in there.
edit: just found an app called setcpu, is that it?
sent from my Nexus 4...
Click to expand...
Click to collapse
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
aimcr7 said:
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I'm familiar with undervolting both on PC and on phone, but i had a Motorola defy before my nexus and undervolting there was a bit different.
sent from my Nexus 4...
zakoo2 said:
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
Click to expand...
Click to collapse
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Former nexus s user here, the reason nexus s didn't benefit in battery life much was that it only had 1 core, and used a higher nm manufacturing process, 65nm -> 28nm. Lower voltages in the 28nm means that it multiplies the heat/power savings more than a 65nm, and the 4 cores multiply the savings by up to 4.
FatalityBoyZahy said:
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
Click to expand...
Click to collapse
don't know, it was just there. did you try to reboot after installing the app?
I'm on Franco's kernel btw.
sent from my Nexus 4...
Pls what are the right values for under volting Samsung captivate
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I am new to this and my battery goes +40°C when I play simple games... I am running Franco's kernel r71 should I do UV? If so how much? Thanks in advance
Sent from my Nexus 4 using xda app-developers app
xtremer92 said:
Pls what are the right values for under volting Samsung captivate
Sent from my SGH-I897 using xda premium
Click to expand...
Click to collapse
this is the lg nexus 4 forum.
sent from my Nexus 4...
I am looking for a CPU governor I can use with just the root that our AT&T Note 3's currently have. What I would like to do is have a governor so when certain games that are really draining my battery are running that it will lower the CPU and give me better battery life. Is this possible with our current root only? I read that SetCPU had this feature with app based profiles but the recent reviews are stating that the app based profiles are not working correctly. Does anyone have any suggestion of what I could use?
Set cpu is working for me, I have the paid version though. I put it on performance governor and it held 1 core wide open at 2265. I then changed it to ondemand and the core dropped to 300. There's also a conservative, interactive, user space and power save governors. Search governors for explanation of each governors settings/purpose.
Sent from my SAMSUNG-SM-N900A using xda app-developers app
kitsinni said:
I am looking for a CPU governor I can use with just the root that our AT&T Note 3's currently have. What I would like to do is have a governor so when certain games that are really draining my battery are running that it will lower the CPU and give me better battery life. Is this possible with our current root only? I read that SetCPU had this feature with app based profiles but the recent reviews are stating that the app based profiles are not working correctly. Does anyone have any suggestion of what I could use?
Click to expand...
Click to collapse
You can set a profile to lower CPU when your battery gets above a certain speed. That would be your best. Another alternative is to set a max speed for x condition or y. Doing all of the above will lower the performance of your game. It would be best to try different max speeds that still allow you to play your game enjoyably and go from there. Games are just a battery hog, even if you lower your speed it will still take milliamps than you'd prefer. I think off hand to just try, is set max speed at the 15xx speed and just use on demand or interactive. Power save will lower performance too dramatically and possibly kill more battery. Performance is really for the most demanding of games or benchmarking.
Sent from my SM900T.
@rbiter said:
You can set a profile to lower CPU when your battery gets above a certain speed. That would be your best. Another alternative is to set a max speed for x condition or y. Doing all of the above will lower the performance of your game. It would be best to try different max speeds that still allow you to play your game enjoyably and go from there. Games are just a battery hog, even if you lower your speed it will still take milliamps than you'd prefer. I think off hand to just try, is set max speed at the 15xx speed and just use on demand or interactive. Power save will lower performance too dramatically and possibly kill more battery. Performance is really for the most demanding of games or benchmarking.
Sent from my SM900T.
Click to expand...
Click to collapse
so this may be a dumb question, but is 300MHz the lowest clock speed it can reach? I just installed Better Battery Stats on my Nexus 7 (2012) and it can get down to 50MHz. Just looking to conserve more battery. Thanks!
Just get a Zerolemon 10000 mah battery and never worry about what is using your battery again. They are only 50 bucks and that includes the special case/protector to house the phone and the battery.
Solarenemy68 said:
Just get a Zerolemon 10000 mah battery and never worry about what is using your battery again. They are only 50 bucks and that includes the special case/protector to house the phone and the battery.
Click to expand...
Click to collapse
That's not really an option for me. I often rock the phone with no case at all and like it in its 168g form. I already have 30-40 hour batterly life with 3-4 hrs of screen time. But I just noticed the lowest clock speed it 300Mhz and I think it can be lower!
Solarenemy68 said:
Just get a Zerolemon 10000 mah battery and never worry about what is using your battery again. They are only 50 bucks and that includes the special case/protector to house the phone and the battery.
Click to expand...
Click to collapse
Yes! This is my solution. No worries when mpdecision gets stuck on 4.4.2 and stops sleeping cores, who cares?! Pry-Fi running continuously in War mode, booyah.
Although this might seem as a question. It really isnt.
What kind of battery life do you get on the First? Screenshots would be nice, but what is like the max time and min time you got and what kind of setting do you use, voltage, clock speed, usage etc.
Also has anyone been using the MSM-DCVS (dynamic clock and voltage scaling) CPU Governer? And if yes then have you gotten better battery life? I will do a test tomorrow and see how it goes.
My best stats.
Well before i got into cpu governors, by default the phone uses on-demand and i could max out 14 hours with variable usage. screen on maybe 50% of the time the phone was on and minimal gaming. texting. I dont have data so that didnt take any battery (i hear 4g and 3g take away lots of juice, is that true?).
Okay. So just did a quick test with msm-dcvs.
Basically for 5 minutes I tested each governed doing the same stuff.
Msm-dcvs utilizes deep sleep ALOT more. Almost 8 times more than on demand. And doesn't really use anything in between. So it goes from deep sleep to minimum 300mhz to get it going and then jumps to the max of 1.4ghz and if the screen is on it uses 700mhz.
So using deep sleep it saves batter.
On demand on the other hand tends to use 300mhz instead of deep sleep. It also jumps around a lot between all the various clock speeds using just about anything it can. So i guess on demand will get worse battery life but I will report my findings in a few hours seeing bow battery life goes with dcvs.
Sent from my HTC first using XDA Premium 4 mobile app
Just a quick update. On demand is crap. Performance is really good and dcvs is performance just more intelligent
Sent from my HTC first using XDA Premium 4 mobile app
My battery life is crap. I've tried to adjust clock speed & voltage but I don't believe JMZ's latest kernel supports it and I'm never able to get any governors besides stock to stick
abrahammmmmmm_ said:
My battery life is crap. I've tried to adjust clock speed & voltage but I don't believe JMZ's latest kernel supports it and I'm never able to get any governors besides stock to stick
Click to expand...
Click to collapse
Use performance. It has a really fast "rave-to-idle" speed. This means that the phone will finish tasks faster and go to idle/deep sleep. So it should save you batter. Unless you don't mind lag and use msm-dcvs which is performance just it takes time to ramp up the speed.
Sent from my HTC first using XDA Premium 4 mobile app
russian392 said:
Use performance. It has a really fast "rave-to-idle" speed. This means that the phone will finish tasks faster and go to idle/deep sleep. So it should save you batter. Unless you don't mind lag and use msm-dcvs which is performance just it takes time to ramp up the speed.
Sent from my HTC first using XDA Premium 4 mobile app
Click to expand...
Click to collapse
What app do you use for this? All the ones I've tried don't make any custom settings stick
abrahammmmmmm_ said:
What app do you use for this? All the ones I've tried don't make any custom settings stick
Click to expand...
Click to collapse
CPU master by antutu. I've always used it. Best one there is
Sent from my HTC first using XDA Premium 4 mobile app
russian392 said:
CPU master by antutu. I've always used it. Best one there is
Sent from my HTC first using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Alright I'll try the app. BTW I'm pretty sure 918mhz isn't the stock minimum... Must explain my horrible battery. What do you have yours on?
Edit: so far so good. I'm feeling some better battery life even tho it might just be a placebo effect I know that the CPU will have less strain & rest more now that the minimum is at 384. And few more questions, what do you have set for your I/O scheduler and also did you configure the voltage?
It's important for battery life, that the phone goes into deep sleep while screen is off. Use this app to test whether thats the case: BetterBatteryStats
Also you can see which process "wakes up" the phone while it should sleep.
My First normaly runs about 2 days without charging. So battery is pretty good!
PS: I'm using deodexed rom with stock kernel.
G00fY2 said:
It's important for battery life, that the phone goes into deep sleep while screen is off. Use this app to test whether thats the case: BetterBatteryStats
Also you can see which process "wakes up" the phone while it should sleep.
My First normaly runs about 2 days without charging. So battery is pretty good!
PS: I'm using deodexed rom with stock kernel.
Click to expand...
Click to collapse
Wow that's great battery life.
I'm yet to test dcvs in my first and see how long that lasts me. I have Wi-Fi on all day. So I can get up to 14 hours max.
Sent from my HTC first using XDA Premium 4 mobile app
abrahammmmmmm_ said:
Alright I'll try the app. BTW I'm pretty sure 918mhz isn't the stock minimum... Must explain my horrible battery. What do you have yours on?
Edit: so far so good. I'm feeling some better battery life even tho it might just be a placebo effect I know that the CPU will have less strain & rest more now that the minimum is at 384. And few more questions, what do you have set for your I/O scheduler and also did you configure the voltage?
Click to expand...
Click to collapse
No I have yet to figure out io bit tinkering with voltage isn't a good idea since the battery is specifically set to a voltage the phone needs.
Sent from my HTC first using XDA Premium 4 mobile app
Okay I have some new findings. Idk about the custom kernel...bit with stock you only get 3 I/o schedulers. Noop, deadline, and cfq. Noop is first come first serve. Deadline reorders the task sequence and does what it thinks should come first...good for like gaming. And cfq. Which evenly distributes the power amongst all tasks. If you are using cfq make sure you kill unused tasks all the time. If you use a lot of things on your phone and multitask a lot use deadline. Noop is pointless unless you don't use your phone for anything. And cfq is just an alternative to deadline. So I/o won help much.
Then in CPU master. Go to advanced. And press "disable perflock". It will explain what it does. Hit set on boot. And reset you clock settings. Now we shall see what we get.
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Okay guys. I used deadline to see if that would change anything. With the same dcvs setting with deadline I got 15% batter down in 2 hours. That's pretty good. That's 7.5% an hour.
And this is with screen on and wifi on about 70% of the time.
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Okay this is my final say on how to get the most out of your battery life.
There are two set ups
1. Lag free/ smooth set up
Min 384mhz, Max 1080mhz
Governer: Performance
i/o Scheduler: Deadline
-This set up will save battery why? Because 1. You don not need your max 1.4 ghz to keep the phone running lag free, and in performance mode, the phone is LOCKED into 1.4ghz until you dim the screen and it goes into deep sleep. no inbetween. So clocking down will help save EVEN MORE battery. So unlike dcvs you will not have lag when you turn your screen on. It will jump from zero to 1ghz in a few milliseconds.
2. Inteligent
Min: 432mhz, Max 1.4ghz (default max. Dont over clock)
Governer: MSM-DCVS
i/o Scheduler: CFQ
-This set up will save battery, i go down about 1% every 6-20 minutes depending on usage. (6 being max usage and 20 meaning iddle). Once you turn the screen on your device will lag slightly and then will work just fine. This set up is good for those people who dont ALWAYS need max performance. Example: Reading an email doesnt require your phone to be locked at max frequency all the time so it will down clock the device. It simply takes time for it to rev the engine.
3. On Demand
Well this is simply absoule minimum to absolute maximum with NOOP as the i/o. This is the ultimate ondemand set up as it will do what you are currently doing first then do the rest while constantly changing clock speed.
Also...btw changing clock speed takes battery that is why performance saves batter not uses it. Its either deep sleep or max and thats it.
I will add screenshots to this soon once im done with all my tests.
Battery life today on msm-dcvs
I should be at 30% right now bit pretty good battery tight now
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Tried today MSM-DCVS scheduler on my stock rooted firmware. Don't like it. Lags a lot when screen on (and CPU at max 1.4Ghz). And i do not see any significant battery improvements, instead it seems that it takes longer time for phone to do background tasks like mail checking etc.
Concerning battery life - in general I receive 3-3.5 hours of screen time. And it can be 1 day to 3. It all depends on usage, but screen on time never goes above 4 hours.
In attached file - Stats for my phone while traveling from the U.S. to Russia. As you can see, delivery does not take very much time And in standby mode phone can last almost two weeks (with wi-fi and nfc on).
Hulo_ said:
Tried today MSM-DCVS scheduler on my stock rooted firmware. Don't like it. Lags a lot when screen on (and CPU at max 1.4Ghz). And i do not see any significant battery improvements, instead it seems that it takes longer time for phone to do background tasks like mail checking etc.
Concerning battery life - in general I receive 3-3.5 hours of screen time. And it can be 1 day to 3. It all depends on usage, but screen on time never goes above 4 hours.
In attached file - Stats for my phone while traveling from the U.S. to Russia. As you can see, delivery does not take very much time And in standby mode phone can last almost two weeks (with wi-fi and nfc on).
Click to expand...
Click to collapse
Personaly i dont have NFC or 4g on at any time. 1. i dont have data and 2. i dont use nfc cause the so called "modern world" is still stuc on stupid apple devices.
I noticed the following issues with managing the cpu
1. When setting cpu clock speed, after about 5 seconds after you left the app it changes the clock speed back to how it was
FIX: in cpu master (or the app of your choice) go to advanced and turn perflock off. then go to the cpu settings and set the speed you want. you must do that every time though cause of the htc kernel
2. MSM-DCVS lags.
FIX: set your minimum to 450-500 mhz
3. 4g drains batter (or so i hear)
FIX: idk yet but if someone could show me their battery life with 4g on and normal daily usage i could try to figure something out.
Hulo. Try this set up
Performance, 300mhz - 1080mhz, deadline
IDK my phone syncs things quite well and lag isnt a big issue for me, i can deal with it because my old phone overclocked is 700mhz so lag isnt anything new to me. So i just notch up the minimum to reduce it.
MSM-DCVS saves batter when screen is off and when screen is on but idle. playing games or actively using the screen will drain battery no matter what setting you use. This is made for people who are constantly on their phones.
Performance saves battery when screen is OFF period. When screen is on its at its max. this is best used for people who dont use their phones alot.
With dcvs i got an extra 7 hours of battery life. usually i get 11. But i hear with 4g on your battery dies in about 6 hours? is that true?!
russian392 said:
Personaly i dont have NFC or 4g on at any time. 1. i dont have data and 2. i dont use nfc cause the so called "modern world" is still stuc on stupid apple devices.
I noticed the following issues with managing the cpu
1. When setting cpu clock speed, after about 5 seconds after you left the app it changes the clock speed back to how it was
FIX: in cpu master (or the app of your choice) go to advanced and turn perflock off. then go to the cpu settings and set the speed you want. you must do that every time though cause of the htc kernel
2. MSM-DCVS lags.
FIX: set your minimum to 450-500 mhz
3. 4g drains batter (or so i hear)
FIX: idk yet but if someone could show me their battery life with 4g on and normal daily usage i could try to figure something out.
Hulo. Try this set up
Performance, 300mhz - 1080mhz, deadline
IDK my phone syncs things quite well and lag isnt a big issue for me, i can deal with it because my old phone overclocked is 700mhz so lag isnt anything new to me. So i just notch up the minimum to reduce it.
MSM-DCVS saves batter when screen is off and when screen is on but idle. playing games or actively using the screen will drain battery no matter what setting you use. This is made for people who are constantly on their phones.
Performance saves battery when screen is OFF period. When screen is on its at its max. this is best used for people who dont use their phones alot.
With dcvs i got an extra 7 hours of battery life. usually i get 11. But i hear with 4g on your battery dies in about 6 hours? is that true?!
Click to expand...
Click to collapse
I'd just like to add that 4g actually consumes LESS battery than 2g/3g/3.5g only LTE tho. That's because it's more optimized and advanced I've read and experienced it in many occasions
abrahammmmmmm_ said:
I'd just like to add that 4g actually consumes LESS battery than 2g/3g/3.5g only LTE tho. That's because it's more optimized and advanced I've read and experienced it in many occasions
Click to expand...
Click to collapse
Alright then. Interesting. My friend on his s3 gets 6 hours of battery with 4g.
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russian392 said:
Alright then. Interesting. My friend on his s3 gets 6 hours of battery with 4g.
Sent from my HTC first using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I should add that the optimized battery life for LTE is only true tho for new snapdragon CPU's including Apple's processors as well. I'm not aware of tegra or any exynos at the moment.