Originally Posted by d-pak
I have come to realize that the HTC One's "swipe up" of screen just removes them from recent and doesn't actually kill the tasks. Whats the best way to kill tasks ?
If you are willing to pay a few bucks for a app that also provides a almost unlimited amount of root and other tools, you should take a look into Android Tuner
I did not mention that it is not recommanded to kill background processes uncontrolled! This will only cause instability. Just kill/crystallize the processes you really don't want to run in the background.