yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] ravvio:
There's No such sound coming from speaker... Can you elaborate what would clearing apps mean... have attached latest Better Battery Status Screenshot and just to inform you i am experiencing more than 25-30% battery drop per hour
[Android Q&A, Help & Troubleshooting] rirozizo:
clearing apps means going into recents screen and swiping the apps away.

may i know what device and what version of android it is running? This seems very weird, are you playing any game on it? clash of clans maybe? hehe

Sent from my Nexus 4
[Android Q&A, Help & Troubleshooting] ravvio:
clearing apps i do that most of the times :thumbup:... I own a Indian Branded Croma CRCB2243 phone powered by MTK6589 chipset running 4.2.1 Android with 2300 mah battery 1gb ram 4gb rom.. Also just to inform you last night i changed few settings in regards to my kernel and processor speed as my processor was not running below 1.2 ghz i changed the max cpu speed to 998 mhz and io handler to noop as i read in xda forums that these are battery saver techniques with help of Rom Toolbox pro.
[Android Q&A, Help & Troubleshooting] rirozizo:
then I'm out of ideas, sorry.

one last thing before I'm really out of ideas, when is the last time you flashed anything? you should at least let the phone settle for 3 days before judging battery life.

Sent from my Nexus 4
[Android Q&A, Help & Troubleshooting] ravvio:
Thanks for all your help.. But just to let you know its been more than a week after flashing the rom.. Can you direct me to any other xda forum which can help me with more ideas related to battery issues with mtk6589 device?
[Android Q&A, Help & Troubleshooting] rirozizo:
XDA doesn't have much info for MTK devices, you can ask in android Q&A, Help & Troubleshooting section if you want

Sent from my Nexus 4
[Android Q&A, Help & Troubleshooting] kekampus_saja:
after following this guide

now it seems harder to kill the battery..

I'm running samsung galaxy wonder with cm 9 + stock 1500 mah battery
[Android Q&A, Help & Troubleshooting] ==vj==:
Hello [MENTION=2722834]rirozizo[/MENTION] ,

Great guide..! And battery backup goes better following it.

Yet got few doubts and need some more light on them.

1. Screen Brightness

Even after sliding left to only 10-15% of brightness, its still noticed Screen as highest battery consumer. Now, there is something known as COLOR CALIBRATION available for Moto G. The default values of RGB colors are 255. So, would it make any benefit if these values are lowered to some softer values yet good color for saving battery :confused:

2. Apps in RAM

From the explanation, I understand and also agree that holding apps in RAM is good idea as it helps CPU quickly resume the app for usage thereby reducing CPU cycles. But..! Its also been noticed that while we keep apps in RAM (pressing Home key instead of Back/Clearing Recent apps list), still 1 process will be constantly running. It could be in hibernated state yet could it be draining battery :confused:

While clearing apps from Recent list eliminates the whole app out of RAM and puts it in cached process. Confused which one is better. Using HOME key or CLEARING RECENT APPS...?
[Android Q&A, Help & Troubleshooting] rirozizo:
1. Screen will stay at the top, because "screen" is more than just the screen itself, it's basically everything displayed on your screen (any system app, animations, etc...) so don't worry about it being at the top.

For the color calibration thing, it won't make a difference because the backlight is the one that uses the battery, not the screen itself. So making it lower than 255 will make the colors go darker, but the backlight will stay the same.

Try it! lower them to 0 0 0! you'll see that your screen will "light up" as black. but be sure to know how to get them back to 255 because you won't be seeing the screen (maybe a reboot can help)

2. You got them confused by each other. You SHOULD press home, you should NOT clear all recents.

Now exceptions apply here: if you have a game in the recents, and it keeps draining your battery, you should only swipe it away, not the whole recents. This makes saves you the most nattery because you killed the "badly coded app" and yet you kept all the good apps alive :)

I hope i explained it in a good way, english isn't my native language.

Sent from my Nexus 4
[Android Q&A, Help & Troubleshooting] ==vj==:
That was helpful. Thank you :) That means heavy apps like games or browsers like chrome are better been wiped out of recent list thereby reflecting same out of RAM.
[Android Q&A, Help & Troubleshooting] Tzfardaya:
Not all games are badly coded...

Only the apps that continue to drain battery when in the background should be swiped away.

It's not the ram you're clearing, but unnecessary background cpu usage.

For example, the app on my phone that connects to my trucks gps drains battery while sitting in the background and not connected to my truck... It keeps looking for the gps, wastes about 2% battery an hour when running. So, it gets swiped away when not needed... (or rather, tasker greenify's it when disconnecting)

No other app currently on my phone (with the exception of Google's news and weather glitching) acts up and drawing battery in the background needing swiping away. And that includes two heavy games (The Simpsons: Tapped Out, and Asphalt 8), and chrome.
[Android Q&A, Help & Troubleshooting] Flyview:
Some really good ideas and battery saving tips in this thread! Thanks for taking the time to spell it all out for people newer to Android [MENTION=2722834]rirozizo[/MENTION] . I wrote an app that deals with automatic toggling of WiFi/Data/Bluetooth for saving battery. It was featured on xda-portal and phonearena.com.

If you'd like to check it out, here are the xda and Play Store links:

XDA thread: http://xdaforums.com/showthread.php?t=2743316

Download: https://play.google.com/store/apps/details?id=com.teqtic.leandata
[Android Q&A, Help & Troubleshooting] Lahdee:
Helpful

Thanks for the suggestions. Some I discovered on my own (turn off Google location), but most were new to me and very useful. The whole thread is great!::)
[Android Q&A, Help & Troubleshooting] fatboyslimerr:
Does anyone know if forcing GPU rendering in Dev settings will be lighter or heavier on battery?
[Android Q&A, Help & Troubleshooting] Tzfardaya:
Well, I don't know, I've heard claims both ways, but I never seen a test to check...

Why don't you test it for us and report back?
[Android Q&A, Help & Troubleshooting] rirozizo:
never seen an actual test.

though GPU is actually part of the CPU reserved for drawing. so i guess it's the same thing. though again i haven't seen any technical tests about this
[Android Q&A, Help & Troubleshooting] PascalA:
"We also see a lot of users, even devs and power users, constantly pressing the back button to go home. [...] And to go home, there's a button for that for a reason! Use it! Pressing back over and over again closes the app, and clears it from your device's RAM. When you re-open the app, it will open from scratch, so your phone will be slower, and will consume more battery since it's using more CPU power." (source: http://www.androidbatterylife.com/2014/01/how-to-use-android.html)

versus

"When you are finished using an app close it with the "back" button. This will terminate it and avoid background management" (source: http://better.asksven.org/bbs-how-to/)

--> My opinion:

- An app behaves either as a foreground one-run (battery friend) or as a background forever service (battery enemy), and the app presentations should be clearer on that point

- It's about to which extent you trust each of your apps: if you don't trust them, you always want to close them when you're done with them

- I've beeing using the 2nd method for a long time, and now test the 1st method for a few days

- Example: CleanMaster is a background service app. When you uninstall an app, among other features, it listens to that and offers to clean garbage files. If you want an app to just clean your RAM (before starting some heavy game) or clean garbage files "on purpose", then CleanMaster is not the good app for you, or you should be cautious to disable all of its "monitoring" features, to get the situation better

- Comparing to a Windows PC, the home button is the Windows flag keyboard key or the switch feature (Alt + tab), and the return button is the red cross icon to close a window: do you "always" use the Windows key to prevent your CPU to unallocate RAM? Lol, sure not. You switch (Alt + Tab) between apps you use often or that take heavy time/power to load. But for other one-go apps (changing your protection software settings for example), you'll sure won't keep the window opened when you're done

- So, using Android is the same than using your PC :p

- If the Android OS is able to auto garbage/idle/kill running apps that were not active/used for some time, then I'll be OK to alwats go with the home button. But that's not how it is as of now
[Android Q&A, Help & Troubleshooting] rirozizo:
allow me to correct the last 3 points, as they are totally wrong.

- Comparing to a Windows PC, less RAM means less electricity usage (because of the way it works). And now the fact that you can open any window or any program in like a second with the fast CPUs and RAM we currently all have, it's not a big deal to keep closing an reopening them. On Android, less RAM means... same electricity usage, it doesn't differ. So the wise thing to do is to fill up the free RAM you have because you're paying the same bill anyway (thus came the term "free RAM is WASTED RAM"). Also the fact that the smallest of apps take a huge load of time to open up (relative to opening them up from RAM to continue their work) makes it very hard on the battery to cycle the CPU everytime you open such app.

- So, using Android is SOOOOO not the same as using your PC, you should behave EXACTLY the opposite for each one.... especially if it's a Windows OS.

- The Android OS always have, always will garbage/idle/kill the running apps that it learns to know that you don't want. Always go for the HOME button, because i think since gingerbread android was able to handle itself without a task killer. (OOM situations? hello?)

EDIT: "Once a cause for partial wakelocks has been spotted you have to ask yourself if you even use that app. " source: http://better.asksven.org/bbs-how-to/

this shows that the back button should be used on barely used apps (what you said was true.. and i agree with this), but the home button should be used on the apps you use a lot (like, for me, whatsapp) (again... what you said was true)
[Android Q&A, Help & Troubleshooting] PascalA:
Thanks for those info, I'll go on with the home button and see if it helps overall :)
[Android Q&A, Help & Troubleshooting] budbay:
I have been using this method with home button and agree that for frequently used apps it works best. But for rarely used I use back button to kill. I'm on a 4.4 ROM and have seen improvements this way.
[Android Q&A, Help & Troubleshooting] alisabki:
save for later. Very goood post.
[Android Q&A, Help & Troubleshooting] RoxAbout:
http://xdaforums.com/xposed/modules/mod-nlpunbounce-reduce-nlp-wakelocks-t2853874

This is an awesome app that goes well beyond the op ideas. [should add this app to the op]

give it a shot!

Enjoy :)

:highfive::good::highfive:
[Android Q&A, Help & Troubleshooting] john10001:
Does it matter whether you plug your smartphone into a plug that is 2A, 1A, 0.8A or 0.5A rated? I always thought that it was the phones inbuilt charging circuitry that is what determines how much electrical current it will take to charge the battery?
[Android Q&A, Help & Troubleshooting] Tzfardaya:
Yes, and yes...

The phone will pull what it is capable of handling, up to a maximum of the charger rating..

If a phone can handle 1.5A, and you charge it with a 0.5A charger, it can only pull 0.5A and charge at 1/3 it's maximum capacity...

If you plug it into a 2A charger, it will only pull 1.5A as that's all the phone can handle...

The charge circuits is to keep the phone from drawing too much power, protecting it from damage. the suggestions in this thread about using slower chargers is for the battery health, charging slower is better for the battery, but means longer charge times.

Just like cars, just because some can do 200mph, slower is Better for fuel economy.
[Android Q&A, Help & Troubleshooting] john10001:
Point taken on batteries.

My car though gets better MPG at 70 to 80 MPH than it does in slow rush hour traffic at 5, 10, 20, 30 MPH. It's MPG zenith is around 78 MPH.
[Android Q&A, Help & Troubleshooting] skyhot004:
The "Know How to Use Android" part help me

But i got a question

What if you are a gamer?

I play a lot of high graphic game (even i set gfx to low to save battery thought)

And if you don't clear out ram

Wouldn't that lag the game performance?

You know switching from asphalt 8 to modern combat 5

Having two of these in ram sound bad

Oh also

Can you recommend a lowest ram launcher?
[Android Q&A, Help & Troubleshooting] Tzfardaya:
And probably gets best around 45-55mph, but I don't know what car you have or your driving styles... My apologies, I made the erroneous assumption that the "slower is better for mpg" reference was known to refer to highway driving rather than city stop-and-go type driving..

(wind resistance is exponential iirc, takes more force to maintain an objects speed at 80mph compared to 40mph) though engine to wheel gearing determines the exact "sweet spot"

---------- Post added at 11:15 PM ---------- Previous post was at 11:05 PM ----------

Not really, still each app is hard limited as to mow much ram it can use. . Also, androids ram management is different than a PC's and can close backgrounded apps if more memory is needed.. So, if/when you switch from asphalt 8 to modern combat 5, android can (and does) close asphalt 8 if more memory is needed to run modern combat 8.. Just because an app is in the recents list, it may not be actively stored in ram.
[Android Q&A, Help & Troubleshooting] Lucas Eugene:
Hi [MENTION=2722834]rirozizo[/MENTION] . does flashing different ROM affect battery life. Also doors using my phone while it's charging also affects it's life?

Thanks
[Android Q&A, Help & Troubleshooting] rirozizo:
yes flashing a ROM affects it. you have to wait for about a week for the ROM to "settle" (or in other words, let android learn your behaviour)

also, charging and using doesn't REALLY affect it. but i still recommend not to use it while charging because the battery will be giving and getting at the same time

Sent from my Nexus 4
[Android Q&A, Help & Troubleshooting] salvah:
help here?

ive been long time experiencing battery drain from multipdp when in mobile data, last night i left the phone in mobile for bbs logging, here you go i'd appreciate some help or at least explaining me whats happening cause didnt really find anything in google/xda, regards.
[Android Q&A, Help & Troubleshooting] Sportfreunde:
I downloaded Trickster but don't see a Specific tab when swiping on the left.

Anyone recommend any Trickster Mod tweaks for a Moto G? Currently changing the CPU frequency profile to On Demand is the only one I've made.
[Android Q&A, Help & Troubleshooting] Sportfreunde:
Hmmm the undervolting option doesn't seem to be there on a Moto G XT1032 in the specific tab.

Underclocking was thoguh I used No-Frills CPU Control to do that since this was causing crashes when I did because of a custom (faux) Kernel I think.
[Android Q&A, Help & Troubleshooting] Norup58:
Great guide.

I’m fairly new to the Android world so I learned a lot of about where various items are ‘hidden’ in KitKat by reading this guide.

My only ‘grief’ is, in the Medium & Advanced section you have to be rooted. I read/ tried the suggestions in the Medium & Advanced section but as I have a Sony Z3C with stock KitKat 4.4.4 I was unable to use anything at all. Maybe it is nitpicking but may I suggest you write ‘root required’ next to Medium/Advanced.

Not that I minded the reading/trying of each suggestion – as I said, very informative – but a let-down that I couldn’t use anything at all.

One of the suggestions in the Easy section is ART. For some reason I’m unable to find this. I have enabled the Developer options but it doesn’t show up. Has Sony disabled this or do you also have to be rooted here for access?
[Android Q&A, Help & Troubleshooting] rirozizo:
Thank you for that! i never noticed lol.

I'll be doing a major revamp to the website and to this thread to keep it up to date (with lollipop's new stuff), i'll make sure to add a [ROOT] tag to the guides :)
[Android Q&A, Help & Troubleshooting] mab71:
Deleted
[Android Q&A, Help & Troubleshooting] espaciosalter20:
I have also a z3c and now, we have root capabilities without unlocking bootloader (check Sony cross-dev section or z3c general sub-forum) so I think it's time for you to go and try this fantastic guide... About ART, Sony have excluded ART for their version of KitKat and optimized Dalvik instead. Don't worry, optimized dalvik is just as good than ART.

Enviado desde mi Nexus 7 mediante Tapatalk
[Android Q&A, Help & Troubleshooting] Rino Appus:
It's the best task killer... I doesn't just stops it... It makes the app to sleep mode until we open it.. :)
[Android Q&A, Help & Troubleshooting] khr0n0s12:
So i've been searching and i only found that if not the best but a good way to charge Android battery is when it reach 30% then charge it up to 90%, well 90% is just my conclusion from most of what i read because they states that it should be plugin from 30% or 50% to 80%. I'm just confused on what is a good way to charge a battery, there's too many statements about this questions that is contradicting.

1) Is it bad to charge phone when turned on?

2) Is it bad to use phone while charging?

3)Is it bad to leave phone plugin overnight?

:confused::confused::confused:
[Android Q&A, Help & Troubleshooting] rirozizo:
the three aren't BAD. But it's BETTER to charge the phone when turned off. It's BETTER not to use it, and that last question is actually kind of pointless since all cellphone batteries cut off at a certain point these days. There's no "overcharge" on phones.
[Android Q&A, Help & Troubleshooting] khr0n0s12:
therefore regards to 3rd question, my conclusion of 90% doesn't really do much? you said there's no overcharging so i can charge my phone till it reach 100% whenever i plug it in? :confused:
[Android Q&A, Help & Troubleshooting] rirozizo:
yes. The problem with the battery cells that we've been discussing in this thread is that charging a battery from 0 to 100% in one push (or from 30% to 100% as well) might lead to some cell failures.

So either charge it up from 50% to 100 or from 30 to like 80 then rest a bit and then from 80 to 100 to keep the cells happy :)
[Android Q&A, Help & Troubleshooting] khr0n0s12:
so that's what it means of topping up? clear to me now. thank you :good: :)

Edit: Wait wait wait.. no over charging right? and you also said 30 to 100% might cause cell failures, so plug it in before sleeping with 30% remaining battery and leaving it overnight is bad? (See this making my mind explode, it all contradicts HAHAHA)
[Android Q&A, Help & Troubleshooting] Tzfardaya:
The circuitry in the phone prevents the risk zones... Phone turns off around 3.5V (well above the 3.3V danger zone) stops charging when the phone receives full saturation... As long as you're not frequently charging from above 95% your fine with modern phones. The 30% numbers given in this thread were taken from uncontrolled battery/charger sets (I. E. RC vehicles and the like) charge from any point you like, to any point you like and you should be golden...

Turning the phone off is best, no parasitic load from the device. Phone on, but not is use is next best, minimizes the parasitic load. Overnight charging, this one is a little different.. Most charge circuits stop charging at x voltage/mah, then restart charging at y voltage/mah, so leaving the phone on the charge can potentially cause multiple charges from 99% - >100% over time... I recommend getting the slowest charger you can, that still fully charges your phone (I use a 700mah charger, have a 500 and 400 mah available, but they won't give a full charge by morning if I've drained my battery) for charging overnight..
[Android Q&A, Help & Troubleshooting] khr0n0s12:
:confused::confused::confused:

i might stick from charging my phone till it reach 30% to 90%, and never charge overnight maybe??:confused:

you two also don't have the same answer :confused:
[Android Q&A, Help & Troubleshooting] Tzfardaya:
Actually we kind of do... Riro is talking about non controlled batteries, I'm talking about the batteries with charge control circuits like the ones in our phones...

Everything Ruro is saying is true... *but* the charge circuitry in our phones takes care of 99% of it for us.

Where riro says don't lent the charge drop below 30%.. That means don't let the voltage of the battery drop below 3.3V... Our phones turn off at 3.5V from low power...
[Android Q&A, Help & Troubleshooting] khr0n0s12:
sorry i didn't really pointed that out, im talking about charging overnight :) i did put it in quote though, so overall charging overnigt is.....????
[Android Q&A, Help & Troubleshooting] Tzfardaya:
Not a big issue, better not to leave the phone on the charger too long after a full charge, but not overly harmful... Get the slowest charger you can find that will fully charge your phone overnight, and use that.. (for example, don't use the n6 quick charger for overnight...)
[Android Q&A, Help & Troubleshooting] briankamkobe:
Does anyone know a calibration code from samsung that 'ensures' your phone is truely at 100%.I remember it's *#0228#.Does this really improve your battery life?
[Android Q&A, Help & Troubleshooting] windowstoweb:
Ingenious

Wow, this is really ingenious post. And salute you on your 2000th post. This is how we save our battery. I am gonna read it in detail on your website.

---------- Post added at 07:52 AM ---------- Previous post was at 07:45 AM ----------

Hi,

Sir, where can i find the location of battery stats file in Android?

Best Regards.
[Android Q&A, Help & Troubleshooting] briankamkobe:
bro just go to data/system and you will find the file called batterystats.bin.I'm sure this method would work but not sure if the calibration code from Samsung.

To correctly calibrate your battery after flashing a new rom:

1) shut down, plug in the power supply charge until full. (Preferably continuously charge overnight to ensure maximum power. Remember that do not switch the phone before it is fully charged.)

2)After affirming your phone is fully charged,DO NOT UNPLUG and power on your phone

3) After booting, use Root Explorer or other similar tool to remove /data/system/batterystats.bin

4) Unplug the power, then normally use the phone until it automatically shut down.Then wait for a min or two to restart,you will be amazed you can still boot.Now use all the juice until it won't even boot.

5)Now your phone reads the new updated file,just charge the phone WHILE phone is OFF and you are good to go!

You should notice improvements in the next few cycles.
[Android Q&A, Help & Troubleshooting] rirozizo:
you do realise my OP says not to wipe battery stats right?
[Android Q&A, Help & Troubleshooting] Tzfardaya:
Deleting battery stats does nothing, it's just a record file, had nothing to do with battery calibration... All it does is shows what apps used your battery and to what extent (it the file the battery page uses to show battery history).

If the battery calibration is messed, just charge the phone (with the phone off, as you've said) then Run it completely dry (use until the phone turns off), completely recharge while off again, and that should have the calibration fixed.
[Android Q&A, Help & Troubleshooting] briankamkobe:
how bout the *#0228# code?Will it harm my phone?
[Android Q&A, Help & Troubleshooting] Tzfardaya:
No idea, never seen it, never used it... Don't like Sammy phones... I doubt it will harm the phone, but...
[Android Q&A, Help & Troubleshooting] briankamkobe:
Thx bro appreciate it