Develop Bugs

Overclocking XDAndroid Rhodium

So I noticed a number of references in one of the mega XDAndroid threads to overclocking Rhodium. Sounded pretty simple, just a string of text with the desired frequency in a particular file.
A couple of questions for those who toyed with that:
1) was it stable and what was its fastest stable speed?
2) did it run uncomfortably hot?
3) is it possible to alter it on the fly (so you can run it slow when you're reading, and crank it up for video), or do you have to choose a speed preboot and reset to change it?
4) If it can't at the moment, be altered on the fly, might it be possible for some program to do that in the future?
5) finally, why is it so easy on adroid? It seems like no2chem has hit a bit of a wall in making his winmo project hum, but the references here made it sound like a pretty basic task.
Part of the reason I'm asking is flash 10.1 is due for android in Q1. The last I read of CPU requirements had them over Rhodium's specs by a lot. Mobile hulu access would be fantastic, and I'm planning to start dual booting this summer, once classes are done. It'd be nice if my TP2 could eek out enough performance for that.
Thanks

You could try adding this to your Startup.txt acpuclock.oc_freq_khz=650000, thats the one i use and its prettty nice, i havent notice any heating up at all.

devilcuban said:
You could try adding this to your Startup.txt acpuclock.oc_freq_khz=650000, thats the one i use and its prettty nice, i havent notice any heating up at all.
Click to expand...
Click to collapse
It does not sleep to death for you when you do this devil? I had to take the OC out of my rebuilds, because once the phone sleeps, it will not wake up.

Yep same here. If I add that line, once it goes to sleep in Android, it doesn't want to wake up again...

Reefermattness said:
It does not sleep to death for you when you do this devil? I had to take the OC out of my rebuilds, because once the phone sleeps, it will not wake up.
Click to expand...
Click to collapse
On the Hero one it does , on you build even tho its not really need it i've been using it for a while and it doesn't do it .
So interisting thing, it does go to sleep of death, the reason it didnt do it before for me its because i've been using with htc_battery_smem.fake=1, but as son as i disable that it went to sleep and didn't get up.

devilcuban said:
On the Hero one it does , on you build even tho its not really need it i've been using it for a while and it doesn't do it .
So interisting thing, it does go to sleep of death, the reason it didnt do it before for me its because i've been using with htc_battery_smem.fake=1, but as son as i disable that it went to sleep and didn't get up.
Click to expand...
Click to collapse
I did test and confirm this. I think what happens is with smem.fake=1 the phone actually never goes to sleep.... at least the sleep light never turns on. I will have to ask phh if this is the case.

Tried putting the overclock line in Startup.txt but it did not seem to change anything, at least according to the CPU Benchmark app. The battery line did seem to work though, as it thought it was charging even while not plugged in.
Is there a specific order that these parameters need to be added in? I just added the overclock line at the end and the battery one after that.
Using the latest non-sense 2.1 builds.

I'd love to add Rhodium overclocking support to my RogueTools application.
I think there is still a constraint though with write access to /system. I am hopeful that shortly the Rhodium kernel and rootfs developers will deviate out of the current read only SQSH model and go the way of the Vogue, Kaiser and Polaris hosting the system and data in separate EXT2 partitions on the SD Card. NAND would be the next step.
If someone knows another way to overclock on the fly once the system is up (post boot). PM me. Like I said, I'd love to add support for the Rhodium.

so nothing on the OC for 2.1 yet?
bump

I'm about to test overclocking with the SetCPU app. Worked fine on my rooted G1. I'll report back with my findings.
Edit: Did not work with custom and/or multiple devices selected. Can't push any higher than the stock 528. Blah.

on screen keyboard
when i put both sleep fixes and the overclocking cpu command in my startup text i get the on screen keyboard like in rhobuntu. how do i disable this? its not even usable it just lingers there and its very annoying

O.S.K. byebye command is msmvkeyb_toggle=off

OverClocking M2CW & IME
Data corruption is inevitable without running extensive stress testing to find a safe speed. I have yet to find one for msm7k processors, but surely Qualcomm has one. Benchmarking is not the same as stress testing. Such stress testing apps need to be run for several hours & even days. They can't test all functionality accuracy. Stress testing in themselves can cause hardware damage & even catastrophic failure.
Data corruption is often the "silent killer" and goes undetected by you or system checks ... until you need it most. It may be a config file, a message file, a contact database, an executable, a registry hive, a system file. Any non ROM file is vulnerable. Backup OFTEN & NOT while OC, even though BUed corrupted data is still corrupted. Quote "stable speed" isn't such just because device doesn't randomly lock up or reboot.
Every CPU and memory chip has different limitations. Same phones built on same date may not OC the same.
Don't OC when when building new Android data.img file, downloading update files or apps, extracting or creating archived files, installing apps, encrypting or decrypting.
OC doesn't help Project XDAndroid developers. I suspect many "bugs" they spend valuable time on are OC related.
The msm7k processors supported by Project XDAndroid are a speed scaling processor designed for optimum performance vs. battery runtime, ramping up and down the processor speed based on demand. Average device use doesn't utilize full processor speed.
OC is most noticeable in OS boot times (when OC is initialized prior to), certain multitasking operations, some video playback, CPU intensive games, & to a lesser extent web browsing. Many factors determine the effectiveness of OC especially whether graphics are hardware or software supported.
Your OC device may actually perform worse, noticeably more sluggish, or more jerky than when not OC. Ever notice on some boots into Android it takes forever for your carrier to be detected & displayed on the lock screen and it may creep along as if your processor was hijacked by a random process? Ever notice when you open the app drawer not all your apps are displayed?
OC does use more energy thereby shortening battery run time and producing more heat. Don't complain about battery life if you are OC. Accurate battery charge state & battery run time are not synonymous.
While OC may shorten hardware lifespan it most likely, though possible, will not lead to a catastrophic failure in the typical device lifetime due to the rate of current technological innovations and average length of ownership.
My overall performance satisfaction with Project XDAndroid is best when not OC, especially now that hardware 3D is supported or partially supported as in my rhod500.
OC at your own risk.

[How to] Improve battery life

I'm new here & making this thread in order to share my own experience plus what I've learned from others since there're a lot of concerns regarding battery life.
Followings are what identified as the most power consumption sources and we'll fix them 1 by 1:
1. HD screen: I usually set the display brightness manually to about 15-20%. It is quite acceptable as I almost stay indoor at day time (surely this will make your screen nearly blind at this level if you try it outdoor under sunset)
2. Duo core 1.5GHz CPU: Having your CPU at this speed makes your phone soooo hot for heavy tasks. I use SetCPU to set the speed to 1188Mhz max and 192MHz min and also use SetCPU to enable the Screen Off profile where the max & min speed both set to 192MHz (there're no reasons to run it at high speed when the screen is off, right?).
3. The stock home launcher: I found the stock launcher (called LG Home) always takes a high portion of battery so I replace it with Go Launcher. This app also has a nice feature where you can see and close all running programs so you won't have to install another task killer.
4. Bloatware: Firstly, install Titanium Backup and "Freeze" whatever bloatware you found in this list (thanks youngv408) including the LG Home but only after you install & use Go Launcher. Secondly, install Gemini App Manager, at its home screen you will see running apps, for each of them that you don't want them to autorun (no more running in background & no more auto restart if you kill it), tap on the app name > choose More Operation > Config "Autorun" (root) > disable all of its autorun options (don't ever disable or freeze the Go Launcher if you are using it!)
Above tips keep my boy easily survive 1 day with 50% battery left (with 5,6 phone calls, some SMS, some 3G for web & downloading and little gaming). Hope they help.

All good tips, thanks!

Some good suggestions except for maybe #2. Personally, I found SetCPU had a dramatic negative effect on my battery life. Uninstalling it netted me several more hours with average usage immediately. Also, don't use task killers other than the built-in features of Gingerbread to kill a misbehaving app. The OS already does a good job managing running apps. Turn off GPS because some apps like to ping your current location occasionally and GPS uses a lot of juice. Finally, make sure apps like Facebook, Twitter, Google Plus, Google Currents, Gmail, etc. aren't set to sync too frequently.

Malnilion said:
Some good suggestions except for maybe #2. Personally, I found SetCPU had a dramatic negative effect on my battery life.
Click to expand...
Click to collapse
+1
According to battery use info smaller cpu clock resulted in more cpu total time usage

This battery gets better everyday... never had this experience with another phone.
Weird is, that after i no-bloated and did some tweaking in the beginning, the batterylife was still very disappointing. It seems that it is growing with the user...

we can turn off wifi or 3g if we don't use them,so we can extend the time

[Q] Why is Battery draining so fast on my Samsung Galaxy W (GT-I8150)?

I have upgraded my Galaxy W to Jelly Bean using Custom Room (4.2.2) Cyanogenmod 10.1 alpha 2. maybe later alpha 3.
Everything runs well. but why my phone's battery drains so fast? and please help me HOW TO SOLVE IT AND MAKE IT LAST LONG TIME???
THANKS VERY MUCH....

Backup your apps, factory reset your phone. If battery drain problem persists, install Greenify or deep Sleep battery saver from Google Play to better manage battery resources.

Lim Wee Huat said:
Backup your apps, factory reset your phone. If battery drain problem persists, install Greenify or deep Sleep battery saver from Google Play to better manage battery resources.
Click to expand...
Click to collapse
Thank you for your suggestion... I will try....

Electro Tobib Muhajir said:
Thank you for your suggestion... I will try....
Click to expand...
Click to collapse
when you just flashed the battery will definitely be shorter. Let it recharge for a few cycles before determining whether its good or bad battery life. Keep in mind however that even at full potential, the battery will not last for more than 2 days even at light usage.
if battery life is more important to you compared to "the newest OS" and whatever extra features it brings with it, then I highly recommend installing acro's CM9 RC2 (yes it is ICS) as the 2.x.x kernel is far better at battery life than 3.x.x (i'm currently testing it and I can already feel the difference! I believe I can reach 2.5 days at modest usage but I will have to update you on that after my first few discharge cycle for battery to reach potential after flashing new rom). I do, however notice a few annoyances with RC2 (not sure if its really the ROM, or the custom kernel i'm using, or Nova Launcher is to be blamed), so if it continues to bug me I may just switch back out to latest ICS =p.
If keeping with the latest JB is important for u, best thing you could do is download a custom kernel for it that supports UV(undervolting), then get IncrediControl and tune down your UV based on some voltage tables you can find in FAQ. This alone won't bring you a HUGE improvement in battery life but its definitely an observable difference. On top of UV, try to UC(underclock) your CPU to 1GHz. Most daily functions, apps and games (depending on how intensive it is) will work perfectly smooth even at 1GHz. IMO, the most important point of UCing is you will notice a very significant difference in the heat of your battery (ie backcover of your phone). Heat is generally bad for the battery (shorter life + faster draining) so UC is definitely a good thing to do =). Of course, on top of all those, get greenify and wakelock detector(WLD) from market to control your not-so-frequently-used apps. Use WLD to track down what is keeping your phone awake (hence drain more battery) and use greenify to hibernate all the not-so-frequently-used apps you have (example of things you DON'T want to greenify: whatsapp and gmail as you don't want to kill these 2 programs when you lock your screen. You want to continue receiving whatsapp messages and gmail when you locked your screen right? XD! Examples of things you SHOULD greenify: games, music player. Maybe some of the games or other apps may keep a background service active, secretly using your battery even though the last time you used it was 2 days ago!)
Finally, if your wonder is about 1-1.5 years old, chances are your battery is already bloated (perhaps you can feel your battery through the backcover of your phone even!) A bloated battery is a dangerous and short-capacity battery. Even with the best rom you may only push through a day from 100-0%. If your battery still looks fine but your phone is nearing its birthday, go ahead and do some online shopping (ebay or local equivalent, like malaysia we have Lelong.com.my) and get a battery for your phone. Its usually much cheaper than buying from telephone shops.
EDIT: Adding on to all of that, choosing a good governor+i/o scheduler combo is important as well. If our phone is similar with the S+, smartassv2+sio(i've used this, its quite smooth and battery is good) OR OnDemand+noop is thought to be very good in terms of battery life and responsiveness. Lulzactive is also very good but its not so easy to tune it so i usually would stay away from it. Do bear in mind that although the former 2 combo is good, it still highly depends on how you use your phone so there will not be a universally best governor+io combo. Both of those suggested by me are supposingly best in responsiveness as well as deepsleep battery conserving (only if the assumption that our roms work the same as the roms tested in S+, which MAY NOT be true).
TL;DR? try smartassv2+sio (u may change this using IncrediControl, get from playstore). Then if you are not satisfied with your current performance/battery life, you may continue experimenting by changing governor and i/o scheduler one at a time. If you are doing the testing, make sure to have some way to record your tests if not you will 100% be deceived by placebo!(with actual numbers you will clearly see whether your feeling is placebo or if there really is an improvement)

I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.

oribunokiyuusou said:
I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.
Click to expand...
Click to collapse
Sounds like your battery is bloated. Can u show me a screenshot of your battery graph and app usage?

oribunokiyuusou said:
I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.
Click to expand...
Click to collapse
that 20% is not actually the 20% of the battery juice. It is 20% of whatever amount of battery is drained due to the display being ON. Like if your battery is used from 100% to 90%, then only 2% is used by the display.
I am not sure if I could explain what I mean.
EDIT: Hmmm maybe I misunderstood what you said... If that is the case, disregard.
And also my galaxy W will use all of its battery charge when the display is constantly ON for about 3-5 hours.

Actually, I've figured out what it was. It was Google Now. Chewing away at the battery without saying a word anywhere in the battery screen. I am now back to my old 3 days battery.

you need to install cpu spay from google play and you need look deep sleep time.

this reaction is typical if your coming from a stock or at least cm9.
there has been a lot of arguments about battery life of cm10 and above.
in my opinion, there really is a difference, i mean cm10+ drains battery faster.
and the reason being is of course the features there is in cm10++.
if you're after battery life, stay with stock or cm9 (for now).
but if you feel like your in with cm10+ and you don't want to go back like me, then may want to try these tricks:
1) using Titanium Backup, freeze the apps that you don't really use.
- in my phone i froze pico tts, voice search, talk back, etc. (i even froze google search )
2) i use an app called "autostarts", it can disable auto starting of app including those of the system.
- in my phone, i disabled google maps in every activity. ex. after startup, connectivity changed, wifi connected, widget updating
3) disable system settings which also contribute to battery draining.
- disable location service when your not using it
- disable automatic backup/restore
- disable haptic feedback
- disable autosync
- disable the top battery drainers when not in use (wifi, mobile data, gps, bluetooth)
- and many more just explore
4) do not use so many widgets (my home screen has 0 widget)
5) do not use live wallpaper
6) charge only using the original charger, not from other phone/brand, not from a usb port
- the best way to charge is to avoid using the phone until it's fully charged
7) finally, install only apps that you really need. just keep a backup of your not so often used apps and install only when you need them
If you think about it, everything i wrote above contradicts with the original concept of Android.
But that's life, sometimes you have to trade something in order to achieve another.
Our phone was baked as Gingerbread, now we want to make it taste like Jellybean.
We have all the ingredients, but we don't have a jelly bean pan to make the candy molds.
So we improvise, we work around, we do some shortcuts, we make alternatives, certainly it will cost something.

egagah said:
when you just flashed the battery will definitely be shorter. Let it recharge for a few cycles before determining whether its good or bad battery life. Keep in mind however that even at full potential, the battery will not last for more than 2 days even at light usage.
if battery life is more important to you compared to "the newest OS" and whatever extra features it brings with it, then I highly recommend installing acro's CM9 RC2 (yes it is ICS) as the 2.x.x kernel is far better at battery life than 3.x.x (i'm currently testing it and I can already feel the difference! I believe I can reach 2.5 days at modest usage but I will have to update you on that after my first few discharge cycle for battery to reach potential after flashing new rom). I do, however notice a few annoyances with RC2 (not sure if its really the ROM, or the custom kernel i'm using, or Nova Launcher is to be blamed), so if it continues to bug me I may just switch back out to latest ICS =p.
If keeping with the latest JB is important for u, best thing you could do is download a custom kernel for it that supports UV(undervolting), then get IncrediControl and tune down your UV based on some voltage tables you can find in FAQ. This alone won't bring you a HUGE improvement in battery life but its definitely an observable difference. On top of UV, try to UC(underclock) your CPU to 1GHz. Most daily functions, apps and games (depending on how intensive it is) will work perfectly smooth even at 1GHz. IMO, the most important point of UCing is you will notice a very significant difference in the heat of your battery (ie backcover of your phone). Heat is generally bad for the battery (shorter life + faster draining) so UC is definitely a good thing to do =). Of course, on top of all those, get greenify and wakelock detector(WLD) from market to control your not-so-frequently-used apps. Use WLD to track down what is keeping your phone awake (hence drain more battery) and use greenify to hibernate all the not-so-frequently-used apps you have (example of things you DON'T want to greenify: whatsapp and gmail as you don't want to kill these 2 programs when you lock your screen. You want to continue receiving whatsapp messages and gmail when you locked your screen right? XD! Examples of things you SHOULD greenify: games, music player. Maybe some of the games or other apps may keep a background service active, secretly using your battery even though the last time you used it was 2 days ago!)
Finally, if your wonder is about 1-1.5 years old, chances are your battery is already bloated (perhaps you can feel your battery through the backcover of your phone even!) A bloated battery is a dangerous and short-capacity battery. Even with the best rom you may only push through a day from 100-0%. If your battery still looks fine but your phone is nearing its birthday, go ahead and do some online shopping (ebay or local equivalent, like malaysia we have Lelong.com.my) and get a battery for your phone. Its usually much cheaper than buying from telephone shops.
EDIT: Adding on to all of that, choosing a good governor+i/o scheduler combo is important as well. If our phone is similar with the S+, smartassv2+sio(i've used this, its quite smooth and battery is good) OR OnDemand+noop is thought to be very good in terms of battery life and responsiveness. Lulzactive is also very good but its not so easy to tune it so i usually would stay away from it. Do bear in mind that although the former 2 combo is good, it still highly depends on how you use your phone so there will not be a universally best governor+io combo. Both of those suggested by me are supposingly best in responsiveness as well as deepsleep battery conserving (only if the assumption that our roms work the same as the roms tested in S+, which MAY NOT be true).
TL;DR? try smartassv2+sio (u may change this using IncrediControl, get from playstore). Then if you are not satisfied with your current performance/battery life, you may continue experimenting by changing governor and i/o scheduler one at a time. If you are doing the testing, make sure to have some way to record your tests if not you will 100% be deceived by placebo!(with actual numbers you will clearly see whether your feeling is placebo or if there really is an improvement)
Click to expand...
Click to collapse
thanks a lot. that's very helpful for me..

klacenas said:
this reaction is typical if your coming from a stock or at least cm9.
there has been a lot of arguments about battery life of cm10 and above.
in my opinion, there really is a difference, i mean cm10+ drains battery faster.
and the reason being is of course the features there is in cm10++.
if you're after battery life, stay with stock or cm9 (for now).
but if you feel like your in with cm10+ and you don't want to go back like me, then may want to try these tricks:
1) using Titanium Backup, freeze the apps that you don't really use.
- in my phone i froze pico tts, voice search, talk back, etc. (i even froze google search )
2) i use an app called "autostarts", it can disable auto starting of app including those of the system.
- in my phone, i disabled google maps in every activity. ex. after startup, connectivity changed, wifi connected, widget updating
3) disable system settings which also contribute to battery draining.
- disable location service when your not using it
- disable automatic backup/restore
- disable haptic feedback
- disable autosync
- disable the top battery drainers when not in use (wifi, mobile data, gps, bluetooth)
- and many more just explore
4) do not use so many widgets (my home screen has 0 widget)
5) do not use live wallpaper
6) charge only using the original charger, not from other phone/brand, not from a usb port
- the best way to charge is to avoid using the phone until it's fully charged
7) finally, install only apps that you really need. just keep a backup of your not so often used apps and install only when you need them
If you think about it, everything i wrote above contradicts with the original concept of Android.
But that's life, sometimes you have to trade something in order to achieve another.
Our phone was baked as Gingerbread, now we want to make it taste like Jellybean.
We have all the ingredients, but we don't have a jelly bean pan to make the candy molds.
So we improvise, we work around, we do some shortcuts, we make alternatives, certainly it will cost something.
Click to expand...
Click to collapse
yups...nice suggestion... thanks very much...:good::good::good:

Lim Wee Huat said:
Backup your apps, factory reset your phone. If battery drain problem persists, install Greenify or deep Sleep battery saver from Google Play to better manage battery resources.
Click to expand...
Click to collapse
THANKS...

oribunokiyuusou said:
I'm having some seeeeerious battery issues with alpha3. With just 15 minutes screen usage in a day, battery settings says my screen used up more than 20% of the battery! This just for consulting the time and the weather.
Click to expand...
Click to collapse
me too.... more than 20%, whereas my battery is in sleep screen and in the lowest brightness

Me too
Sent from my GT-I8150 using xda app-developers app

smeone here is right about cm9 rc2 i just flashed it and used a while.. battery seems to be 2x longer than 4.4 kitkat
here is there link
http://mygalaxywonder.blogspot.sg/2012/09/cyanogenmod-9-cm9-alpha-build-8-for.html

Magpir said:
smeone here is right about cm9 rc2 i just flashed it and used a while.. battery seems to be 2x longer than 4.4 kitkat
here is there link
http://mygalaxywonder.blogspot.sg/2012/09/cyanogenmod-9-cm9-alpha-build-8-for.html
Click to expand...
Click to collapse
No....no....no....
That link will redirect you to a website that has kanged Arco's hard work and NOT given due credit....
Here is the correct, original link....
http://forum.xda-developers.com/showthread.php?t=1576874
........right here on XDA...
This might be my S2, or it might be my W...but it's definitely CM

Battery/RAM/Speed Optimization Tips for Android Phones

I AM NOT RESPONSIBLE FOR ANY NEGATIVE IMPACTS OR CONSEQUENCES ON YOUR PHONE IF YOU SO CHOOSE TO USE THESE TIPS.
I've created a couple threads on the ZTE U950 and LG G2, and one problem is the battery life. The battery cannot come out of these devices and thus we cannot combat this with a bulkier, beefier replacement for heavy usage. Charging constantly is something I try to avoid, so these are a few simple tips that can help optimize your battery life (and that APPLY to ANY PHONE):
TIPS
BATTERY
1a) Buy and download CPU Sleeper (root required). There are two versions, one for dual-cores, and the other for quad-cores. Essentially, when a phone is "sleeping", it is actually still running all its cores, helping drain battery faster. This app turns off all but one core when it is "sleeping" so that your battery is not drained nearly as fast.
BATTERY
1b) To take this step a bit further you can download a free app called Multicore CPU Control. In this app you can control your other cores. You can setup profiles to turn on or off cores, and setup each core with different governors. On my LG G2, I setup a profile to only have one core running at 960MHz (2.2GHz originally) after using the steps from below. If you plan to only run one core, then you do not need to buy CPU Sleeper.
NOTES ON 1b: Multicore CPU Control is the name when installed, it is called CPU Performance Control Free on the Google Play Store (either name will work on Google Play). The program needs to be turned on after each boot. When first setting up a profile save it and edit it in order to manipulate the other cores available. The app does not always apply a profile even if it has already been selected. To turn on a profile, click on the profile desired and go to the CPU Monitor tab to check if it has been applied. If not, repeat the process until it does (it usually takes me about 3 times at most).
BATTERY/RAM
2) Download Greenify (root required), a great free app! Sometimes a user does not have a ROM with a kill all button, so pesky apps just stay on without consent. This app allows a user to turn off any app that may want to run in your background, and even shows you which apps are currently running. Apps like Facebook, Talkatone, etc. can all be stopped even if your "task killer" supposedly took care of them.
BATTERY
3a) Wakelock Detector-Save Battery is a free app that checks for apps that continue to work while the phone is "asleep". While Greenify will display the most troublesome apps, this app will help discover any other apps that are running without consent.
BATTERY/RAM
3b) If Greenify does not show the apps discovered in Wakelock Detector-Save Battery, then download Disable Services (root required). This free app allows a user to disable an entire service, or just parts of a service that are bothersome. Click on a service/app to find out what other services accompany it. Read the accompanying services and discern whether or not the service is needed. A good place to start in this app is to check any service/app that has a blue number next to it.
EXAMPLE 3b: I use the Outlook app a lot, but sometimes it gets annoying with updates for insignificant email. I can open Wakelock Detector-Save Battery and click the Outlook app. I turn off "AppWidgetUpdateService" to disable Outlook email updates. Not all services have obvious names, so be careful on system apps if performing trial-and-error.
BATTERY/RAM
3) Buy and download BetterBatteryStats (CPU Spy Reborn/Plus is FREE and only shows CPU states). This app tells me what CPU States are used the most often and is what I download first before my next step. A user can also determine battery-draining apps and turn those off. If turning off those apps is not possible through Settings>Apps just Greenify them!
BATTERY
4) Underclocking. This is an amazing step for saving battery! If you have ran BetterBatteryStats for at least a day, this will come in handy and is highly recommended. You can use numerous programs like SetCPU or Voltage Control to set the clock of the CPU. The key is to find a point that will still be responsive, yet lower than the maximum.
EXAMPLE 4: For this example I will be using my ZTE U950 and Voltage Control. According to BetterBatteryStats, my most used clock was at 1.2GHz and 860MHz. I left my minimum clock at the lowest possible setting, while my maximum clock I changed to 860MHz. I ran this for a few days and saw a noticeable difference in battery life. Another important part to this if choosing the right I/O Scheduler and CPU Governor. I found the default I/O Schedule ("cfq") to perform the best, despite "noop" being good for sluggish memory. "Powersave" is a good Governor at stock CPU speeds, but it will not get a user the savings of power that a step like this will. I tested with this Governor with this step and got horrible reaction times and would often need to restart the phone. The best results I have are with "ondemand" and "interactive". I am currently using "interactive" with a maximum clock of 475MHz! I arrived at that number after checking my BetterBatteryStats while running at 860MHz and found that to be the next most used clock. Now my battery is lasting about twice as long as it normally did! My phone's response time is a bit slower at this low clock speed, but that can combated...
BATTERY/RAM/SPEED
4b) (IF YOU HAVE INIT.D SKIP TO STEP 4c) My LG G2 is underclocked to 960MHz, as noted in step 1b. I am saving quite a bit of battery, but the UI response can lag a lot at times. The use of boot scripts can be helpful to compensate for this. However, my LG G2 does not have init.d support. There are numerous threads that explain how to get init.d support for a lacking Android phone. The simplest method is to install an app from Google Play. I use one called Init.d-Installer just because it forces the phone to reboot once it has installed; others do not seem to do anything to inform a user if they have received init.d support
BATTERY/RAM/SPEED
4c) Download a script called V6 SuperCharger. The thread may seem daunting, but it is fairly easy to install. Download the newest PDF and change it to TXT. Ensure you have init.d support, BusyBox installed (also in the thread if needed), and SuperSU. Run the script in a free app like SManager with SU permissions and follow the instructions. This script gives the ability to enhance speed and power. I install this in order to ensure my UI stays responsive, and LG G2 runs almost at stock speeds (alongside all my other enhancements)!
BATTERY
5) Undervolting (root required/custom kernel required). This is also a great way to save battery. I decrease the voltage in steps of 25 and test from there. If I find no quirks, I leave it. If I find sluggishness or have random phone reboots, I increase by increments of 25 (or 12.5) until I find something stable.
Most phones will not allow undervolting without a custom kernel. To see whether a phone can undervolt or not download, Sytem Tuner. There is a free and paid (Pro) version of this app, but the free one should be sufficient for what we want to do. After installing, open the app and click on the Voltage settings tile on the left-lower side of the screen. All the phone's CPU MHz steps and the amount of voltage applied to each step can be viewed. At the bottom of the screen are buttons to increase or decrease voltage in 12.5 increments (which will apply to all steps). If the -12.5 button is clicked and the values of all the steps drop, then a phone can undervolt. Additionally, System Tuner allows a phone to manually apply undervolting to each step if wanted.
To test undervolting, just push the decrease button until the phone freezes up. There is no harm to your phone or CPU as neither are being overpowered (just the opposite), and a reboot after freezing will reset the phone to default voltage settings. A - 75MHz drop is normal for a phone while remaining stable; and in a lot of cases -100MHz is achievable.
NOTE: Tips #4 & #5 also can be applied to GPUs.
NOTE 2: One thing that should be mentioned is to be careful about putting more than one app that controls CPU clocks. They can read differently and trump the other when used in combination. Instead, install and use one at a time to get more accurate readings. The same should apply to undervolting apps.
BATTERY/RAM
6) A user can change the Dalvik cache a bit to see if that helps optimize RAM, and possibly battery. I did quite a few tests for these to see how they performed. I think the only reason I noticed any changes immediately is because of how far underclocked my CPU is. Anyways, the best results I was able to get with my ZTE U950 was as follows:
124m - dalvik.vm.heapsize (2nd one, not 1st)
8m - dalvik.vm.heapstartsize
For other phones, these are the items to trial-and-error with:
davilk.vm.heapsize (may be more than one at different values)
davilk.vm.heapstartsize
davilk.vm.heapgrowthlimit (may be more than one at different values)
A user can change these settings by downloading an app like Build.Prop from Google Play. I did notice my battery seemed to drain slower with these changed. The RAM was the best optimized for the self-made tests I performed and was nearly the best in all the tests I had ran. A user may or may not notice any differences unless they multitask a lot.
BATTERY/RAM/SPEED
7) All other well-known methods apply as well:
A. Battery Saver apps/settings
B. Battery Calibration apps
C. Refrain from the use of widgets
D. Automatic Brightness apps/settings
E. Small Screen Times before Screen Sleep
F. Turn Off WiFi and/or Data when not needed
G. Task Killers apps/settings

Five Android apps that prolong your smartphone's battery life

This collection of apps will not only extend the life of your handset, but could also improve its overall performance.
Have you ever found yourself wishing that your Android's battery would last longer? Don't answer that -- I already know. Be it an app that's too greedy on resources, ever-larger display sizes that use up power faster, or our constant desire to play mobile games that keep our screens lit up for hours at a time, we're eating up battery life faster than we'd like .
It isn't all bad news. As a platform, Android keeps getting more efficient at task management, and multitasking is smarter than ever. Still, battery life never seems to live up to our hopes or expectations.
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Thankfully, several high-end handsets now have custom touches built in that will adjust settings based on remaining battery life in an effort to squeeze out just a few more minutes. HTC recently introduced a new "extreme power mode" for the One M8 and Samsung has an "ultra power saving" feature in the Galaxy S5. Unfortunately, you have to curtail your usual usage to make the most of these, so they aren't the most convenient for relying on every day
I have spent time exploring a number of battery-saving apps over the years, and I have become quite fond of a few in particular. Here's a list of five of my favorite apps for prolonging the life of your Android's battery. Note that there are a few common settings that overlap across the apps, but in this piece, I've tried to highlight some of the features that help separate each app from the pack.
Juice Defender
Packed with seemingly endless options, Juice Defender is perhaps my favorite app on this list. The free client lets you manage common connections, such as mobile data as well as Wi-Fi and Bluetooth. Multiple preset modes, like "aggressive" and "balanced," allow for toggling and scheduling, background synchronization, and choosing which apps can keep your screen on.
Juice Defender is available in three versions with various features to suit your needs.
Latedroid
Aside from the free app, Juice Defender also comes in Plus ($1.99) and Ultimate ($4.99) versions. Depending on what level of control you are looking for, one might be better suited for your needs. The Plus version, for instance, adds "extreme" and "customized" profiles as well as location-aware Wi-Fi, not to mention scheduling for night hours. The Ultimate app also boasts peak hours and weekend settings, autosync, and deeper GPS controls.
Indeed, I definitely recommend the free client as a starting point but have no qualms about endorsing the paid apps.
Standout features: Multiple versions to suit needs, user profiles, scheduling, and location-aware features.
Battery Defender
One of the more feature-rich free clients I've encountered, Battery Defender offers plenty of options at no cost. It might sound trivial, but I like having the exact battery percentage listed in my notification bar. Far more accurate than what the stock experience usually gives you, it's a simple pleasure.
Battery Defender provides quick access to a number of options.
InfoLife LLC
Battery Defender provides quick and painless access to toggling your common connections such as GPS, Wi-Fi, mobile data, and Bluetooth. I like being able to hop in and turn off the stuff I'm not using -- every little bit helps. While this sort of thing is built into many of today's top Android phones, older or less popular models aren't so fortunate.
Another feature that users will appreciate is Genius Scan, which allows sync to occur every 15 minutes. The adjustable "quiet sleeping" option disables Wi-Fi and data connections at night, a helpful feature for those who do not sleep next to their phones.
Standout features: Easy connections toggling, sleeping mode, staggered sync, and battery percentage in notification bar.
Go Battery Saver & Power Widget
Designed by the Go Dev Team, this one is as gorgeous as it is flexible. A simple tap of the screen lets you toggle preset modes, making it easy to go from reading and relaxing to online gaming. For those who don't like the standard modes, there are two other slots available for creating custom experiences.
Go Battery Saver & Power Widget keeps an eye on your apps to determine which are eating up battery more than others. By assigning a score to your battery, the app is able to determine which features you can enable or disable to extend its life. Tapping the optimize button, in essence, cleans everything up and tacks on some extra expected life. Doing this alone can provide an extra hour or more.
GO Battery Saver & Power Widget recently received a fresh coat of paint.
GO Launcher EX
While the free app is stocked with options and settings, the premium pack brings about another dozen features. Available through in-app purchase for $4.99, this upgraded bundle removes ads and tosses in scheduled settings, more control over Wi-Fi, Bluetooth, and CPU, and a third "extreme" mode.
The app provides quick access to a number of settings with two home screen widgets. Should you go with the premium option, there are three more widgets to choose from. A number of skins or themes are available for Go Dev's own widgets, and you can also adjust how items appear in the notification bar.
Standout features: Handy widgets, multiple user modes, very clean interface, a steady stream of development updates.
Autorun Manager
Perhaps the most "risky" app on this list, Autorun Manager lets you determine which apps start running when your phone boots up. Like the aforementioned apps, this one comes in two modes: basic and advanced. Apps selected in basic mode are terminated immediately when the phone boots, though some will pop back up and start running. My advice here is to leave those alone and let system settings take over. As for the advanced mode, you will find more control over things such as widgets and receivers, and system-wide actions.
Autorun Manager lets users decide which apps start upon bootup of the Android handset.
MobiWIA - AndRS Studio
The free version of Autorun Manager is supported by ads, but you can purchase a Pro key for $3.99. Doing so will also keep apps from auto-restarting in basic mode, as well as block more than 10 receivers in advanced mode. Just for good measure, you also get "Chuck Norris mode," which lets you kill apps in a more aggressive manner. Please note that if you are on the fence over this app, we suggest you err on the side of caution and pass. For those of you who demand more control and a have firm grasp on Android's core functions, however, this might be right up your alley.
Standout features: Stops pesky apps from starting up, two user modes, clear insight into what runs immediately at bootup, awesome Chuck Norris reference.
Tasker
Of all the apps listed here, Tasker is the one that provides more than just battery extension and task-killing. In fact, I would recommend this one to anyone who wants to help automate the Android experience.
In the area of battery life, I like Tasker; it allows me to set times for sleeping and disabling of connections. While I generally tend to plug my phone in overnight, Tasker has proven handy in cases where I do not. Besides time of day, other triggers include day and location; both are useful for people with set work schedules.
Tasker provides users with a myriad of automation options.
Crafty Apps
I also appreciate the way Tasker lets me set my phone to handle media, texting, phone calls, and other Android functions. It might take a while to fully grasp the capabilities, but at $2.99, this one is a true set-it-and-forget-it app.
Those of you with a Chromecast may enjoy some of the extensions and apps that tie into Tasker. One recently making headlines in the Android space, AutoCast, brings about numerous configurations and settings for Google's HDMI dongle.
Standout features: Automated settings based on time, day, and location; automatic settings for text and calls; clean and clutter-free interface.
Other tips and best practices
Chances are good that you can extend battery life by adjusting a few settings on your device or by following a couple of steps. Switching to airplane mode or turning off features like Bluetooth, NFC, and GPS can eke out a few more minutes of life in a pinch.
Is your phone set to automatically adjust brightness? Are your social media apps constantly pinging for updates? You may surprised at how much control you have over the apps and services on your smartphone.
It's not uncommon for an app developer to introduce a new feature or make an adjustment that impacts the battery. Along those lines, I always recommend updating apps to the latest versions. Sometimes these little "bug fixes" can pay off in big ways.
Your favorites?
Which Android applications do you use to extend the battery life of your Android device? Is it one of the five highlighted here, or do you prefer a different client? I would love to hear your feedback in the comments below.