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SGH-I747 Galaxy S3 battery life issues

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SGH-I747 Galaxy S3 battery life issues

I have had my Galaxy S3 since the 6th and have been extremely disappointed with the battery life.  I purchased this phone to replace a Samsung Infuse.  With the exact same apps, gmail account, auto adjust brightness enabled, energy saving enabled on the S3, mail syncing in 5min intervals, screen timeout 1min...etc. - everything set the same as my Infuse.  I have been getting between 7-8hrs per charge on the S3 while I was getting 13-14hrs on the Infuse. I called Samsung Tech this morning and made the specialist note that during the 9 minute phone call I watched the battery fall from 55% down to 52% with the screen brightness on the lowest setting.  I know something is going on because I can leave the phone locked on my desk for an hour, pick it up and feel that the back/lower portion of the phone near the USB connector is warm.  If I do this side-by-side with my Infuse, the Infuse is cool/room temperature while the S3 is noticeably warm.

 

Everything about this phone is stellar, amazing, way beyond my expectations!!!!!  I am simply looking for a way to resolve this battery life issue as it seems like something is remaining "active" while the phone is on standby/locked. 

 

Per the Samsung specialist, I removed my SD card from the phone, performed a factory reset and am currently charging it.  I will see if this helps the cause.

 

Please provide thoughts, suggestions...!!

 

Thank you.

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Message 1 of 18
Contributor

Re: SGH-I747 Galaxy S3 battery life issues

I have the same issue, tried Juice Defender, tried reducing the light on my screen and it didn't do squat. I finally ran into the right tech person at my local AT&T store when I was told by ATT to go in and RMA the battery. The tech told me to clear the memory in the RAM manager.

 

Here's what to do: 1) from your home screen press and hold the home button (center), 2) open task manager - the circular icon in the lower left of the screen, 3) select the RAM tab, 4) tap "Clear Memory".

 

This shuts off a lot of apps that run in the background that you're not currently using. Since you have to do this manually it seems like it's a design flaw by either Android or Samsung, but I know that iPhones do the same thing. Many apps run in the background constantly rather than on demand and they hog memory using up your battery. This seems to be a design consideration for which software developers have not paid attention. Clearing memory helps a lot, but I'm annoyed that I have to do it several times a day.

 

Another consideration is to choose not to use Apps that rely heavily on GPS or Wireless, such as the really cool, but resource intensive weather widget. Again, cool stuff but it over-taxes your battery! Since I've been doing this, my battery life is much better, but the Galaxy S3 still does not have great battery life. My Blackberry did much better for that, but then again I couldn't actually get apps to install and execute on the BB. Take your pick.

Message 16 of 18
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Professor

Re: SGH-I747 Galaxy S3 battery life issues


kerbear0628 wrote:

This shuts off a lot of apps that run in the background that you're not currently using. Since you have to do this manually it seems like it's a design flaw by either Android or Samsung, but I know that iPhones do the same thing. Many apps run in the background constantly rather than on demand and they hog memory using up your battery. This seems to be a design consideration for which software developers have not paid attention. Clearing memory helps a lot, but I'm annoyed that I have to do it several times a day.

 


For the most part, task killing (either with a task killer app, or manually as you describe) doesn't work.  Its a myth, and Android is not Windows.  Android arguable runs better when more memory is being utilized.

http://lifehacker.com/5650894/android-task-killers-explained-what-they-do-and-why-you-shouldnt-use-t...

 

As discussed in the linked artible, the exception is a poorly coded, runway process. In that case, an app like Watchdog would be better way to identify and stop such processes.

 

 

 

Message 17 of 18
Voyager

Re: SGH-I747 Galaxy S3 battery life issues

I had this exact issue. Just by not using my phone, my battery was discharging at a rate of 1% every 10 minutes, even as all applications were closed, network disabled, wifi disabled, sync off, power saving mode on and not using the phone.

 

I downloaded Wakelock Detector and through that I could see that even while the phone was not in use, there were processes continuously running and the CPU was continuously working, such that 95% of the time the CPU was working and less than 5% was the phone actually in standby mode, or in other words, the phone was not efficiently conserving battery power.

 

Namely, the Google Location Services process was continuously running, despite having location services in the settings disabled. The resolution for me was to go to settings -> application manager -> all -> and disabling any application I didn't use, including daemon processes that didn't appear to have any usefulness. I also disabled network location service and google maps. After restarting the phone, the battery drain rate is now at about 1% every 2 hours when not in use.

 

I also went back and re-enabled network location service, restarted the phone, and was able to use google maps where my location was properly detected. My battery drain rate is still at the normal 1% every 2 hours while not in use, so perhaps through some bug a process was continuously running and locked in that state.

 

Hope that helps.

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