If you ask any Android expert for the solution to fix a slow phone, one of the answer you will receive is to uninstall the unnecessary apps so they won’t run in the background. But what if you need an app to be installed (even though you are only using it occasionally) and yet preventing it from running in the background?
One solution is to make use of a Task Manager and kill the background running app regularly. Alternatively, you can disable the app totally so it won’t (and can’t) be running in the background at all.
Here’s how you can manually disable apps from running in the background without your permission.
Note: This trick will only work in selected phone. It does not work in the stock Android in the Nexus device.
1. Go to the “Settings” section in your phone.
2. Scroll down and go to Applications manager.