Still a lot of windows mobile users who do not know, "Where is to view Apps run in the background on Lumia". Task manager is very useful for managing your applications anywhere. If not in use, turn off the application in good. It was intended for the performance of
OS mobile phones to be more aggressive and fast.
If it is found, note the application .... that later you find some switches ON or OFF as option applications will use.
Below are some of the pieces of an image you are looking for a place: "Where is to view Apps run in the background on Lumia".
This time, the OS in use are: Windows phone 10 build 10. 0.10586. 36, Version 1511. With the device: Microsoft 640 LTE.