[REF] Known identified battery drainers

[auroraprime]

Wifi and the display seem to be the S2's biggest weakness when it comes to battery life, I hope my next phone doesn't have the same issue with battery life.

 

[122ninjas]

Wifi and the display seem to be the S2's biggest weakness when it comes to battery life, I hope my next phone doesn't have the same issue with battery life.

I phones have incredible battery life. My mom got 2 weeks of idle with 10 hours screen on.

Sent from my GS4 running CM11 Kandy Kane

 

[maka8]

Wifi and the display seem to be the S2's biggest weakness when it comes to battery life, I hope my next phone doesn't have the same issue with battery life.

What kind of drainage (approximate percentages per ?) do folks see if they are just reading a webpage for example on WiFi using auto brightness? I've noticed about 1% every 5-10 minutes.

 

[122ninjas]

What kind of drainage (approximate percentages per ?) do folks see if they are just reading a webpage for example on WiFi using auto brightness? I've noticed about 1% every 5-10 minutes.

Depends on the web page, color, wifi strength, brightness due to auto brightness etc etc

 

[maka8]

Depends on the web page, color, wifi strength, brightness due to auto brightness etc etc

Let's say the webpage is already loaded and I am just scrolling to read. No apps are updating in the background. Brightness is set to auto. What is your worst case scenario drainage in 5 mins? Does it even budge by 1%?

 

[dandrumheller]

Let's say the webpage is already loaded and I am just scrolling to read. No apps are updating in the background. Brightness is set to auto. What is your worst case scenario drainage in 5 mins? Does it even budge by 1%?

I typically average 1% every 4 minutes (15% per hour ) in dim conditions with auto brightness. This has been reasonably consistent across various ROMs and kernels. This is for general browsing, tapa talk, FB, G+.

Edit: there are a HUGE number of variables that will impact these numbers... You are better off comparing various configurations on your own device to minimize these as much as possible... Run the setup that gives YOU the best battery life while maintaining the functionality you need. Best battery life with screen on will be had in airplane mode with radios off - but you don't get data or phone calls. Gotta do what works for you.

Sent from my SGH-I777 using Tapatalk 2

 

[122ninjas]

Let's say the webpage is already loaded and I am just scrolling to read. No apps are updating in the background. Brightness is set to auto. What is your worst case scenario drainage in 5 mins? Does it even budge by 1%?

Still depends on page color.

 

[nomiko]

Can someone help me i tried 2 roms 2.3.4 stock and shostock3 rom on my mbl and both do not let mbl tk go into deep sleep
In 2.3.4 stock svnet causing kernel wakelocks and keep mobile awake throughout
While in shosstock3 boot_hsic causes wakelock and keep mobile awake.
i want to get rid of this. No matter how even if i had to uninstall modem

(Note:i have lost imei/baseband so i want to use phone just as an media device)


Sent from my SAMSUNG-SGH-I777 using Tapatalk 2

 

[jtschanz]

This thread has tons of useful info for you. Install BetterBatteryStats and then check out the logfile:
http://forum.xda-developers.com/showthread.php?t=1179809

Are you using an external SD card? have you tried removing it and formatting it?

Can someone help me i tried 2 roms 2.3.4 stock and shostock3 rom on my mbl and both do not let mbl tk go into deep sleep
In 2.3.4 stock svnet causing kernel wakelocks and keep mobile awake throughout
While in shosstock3 boot_hsic causes wakelock and keep mobile awake.
i want to get rid of this. No matter how even if i had to uninstall modem

(Note:i have lost imei/baseband so i want to use phone just as an media device)


Sent from my SAMSUNG-SGH-I777 using Tapatalk 2

 

[Jonnyredcorn]

So I've had some pretty bad overnight drain. I usually only have 2 bars for mobile signal while in my basement and WiFi is usually at 1 bar in the basement. I'm also using a ATT gs3 running tasks AOKP. Now in the picture I'm posting shows that my mobile signal is consistent.

One thing I wanted to try was with the tasked app. I want to set it to turn on Airplane Mode from like 12:00am to 7:00am only if I'm connected to my home WiFi network. However I cannot figure out how to set two context's i.e. State=time 12am-8am & WiFi Connected to Home network. I want my phone to automatically turn on airplane mode at night but only if connected to my home WiFi. Also is there a way maybe to keep WiFi on and just disable mobile data and a mobile signal all together. Airplane mode disables both WiFi and mobile network.

Sent from my SGH-I747

 

[thanitos]

Android os runs in the background and destroys data usage and battery life and I've Google everywhere and there is no real fix for it

Sent from my LT28at using xda app-developers app

 

[guruleenyc]

Very helpful post! Thanks.

Sent from my SGH-I777 using xda app-developers app

 

[fldude99]

So I've had some pretty bad overnight drain. I usually only have 2 bars for mobile signal while in my basement and WiFi is usually at 1 bar in the basement. I'm also using a ATT gs3 running tasks AOKP. Now in the picture I'm posting shows that my mobile signal is consistent.

One thing I wanted to try was with the tasked app. I want to set it to turn on Airplane Mode from like 12:00am to 7:00am only if I'm connected to my home WiFi network. However I cannot figure out how to set two context's i.e. State=time 12am-8am & WiFi Connected to Home network. I want my phone to automatically turn on airplane mode at night but only if connected to my home WiFi. Also is there a way maybe to keep WiFi on and just disable mobile data and a mobile signal all together. Airplane mode disables both WiFi and mobile network.

Sent from my SGH-I747

You may want to check out an app called automagic

 

[Jonnyredcorn]

You may want to check out an app called automagic

I'll check that out. Ive gotten a little more familiar with tasker and was able to get airplane mode to only disable Mobile Data and not WiFi, but I take it you cant set two contexts in tasker?

Sent from my SGH-I747

 

[iamatechnoob]

No idea how to post any stat files from BBS (where do you guys get them) but I have a screenshot of the kernel wakelocks that's draining my touchpad when its supposed to be asleep. Partial wakelocks are fine thus no screenies.

Anyone can help? :/

 

[chamonix]

No idea how to post any stat files from BBS (where do you guys get them) but I have a screenshot of the kernel wakelocks that's draining my touchpad when its supposed to be asleep. Partial wakelocks are fine thus no screenies.

Anyone can help? :/

For bbs related issues there is a thread here on xda where you will get help. Don't forget to read the faq

 

[gravitysandwich]

Well i have this vbus_present crap too, but I have a T-Mobile Samsung Galaxy SII. It's making the phone be awake 100% of the time. Running slimbean and stock kernel (happened on stock rom too), was wondering if a different kernel like uber would help or if its the devices hardwawre fault

 

[chamonix]

Well i have this vbus_present crap too, but I have a T-Mobile Samsung Galaxy SII. It's making the phone be awake 100% of the time. Running slimbean and stock kernel (happened on stock rom too), was wondering if a different kernel like uber would help or if its the devices hardwawre fault

That wakelock is present when USB is plugged. Dust in the connector may prevent detecting the unplug action. You could look into log cat and dmesg to check if that event is processed.

 

[junwuu]

thanks, im learning a lot here

 

[jcavz87]

good post, been having issues with battery drainage.. didnt realize apps stay open in the backgroung :s