Samsung Galaxy S3 Battery dies extremely fast My SGS3 had an extremely nice and pretty long battery life until a week ago I used a music download app to download some music. After this I get common notifications like this. And it's scary cause it's true, my battery is draining annoyingly fast. In 10 min of using 10% of battery goes bye bye. This is absurd. (i have not yet clicked on the button)


Screenshot (click for larger variant)

After this, I checked and most of my battery goes into "android system" rather then screen or something else you would expect.


Screenshot (click for larger variant)
Stop running unnecessary applications in the background. For example: Bluetooth should be off when not in use and it can be turned on per usage like for example get a call then turn it on or make sure if turned on always plugged in to a charger. 

Make sure you get titanium back up; you don't need pro. Go inside play store and download it. Run it and then save them to your ad card make sure it's the sd card. 

Then remove any duplicate apps you don't need in your applications menu -- make sure you don't remove system files, just 3rd party apps from any Internet site or the Google playstore. Erase them and make sure you don't run them in background when Android starts or while running because Google play store app doesn't really need to be started with the phone powering on, it is a per usage application. 

Make sure any app that you're not on constantly is not running. Shut them off with the task manager, you can also get an application to automate this for you with one click and schedules.  (I'll have to get back to you soon on the exact app)