How do i fix this this? (Galaxy S5)

[notgsc]

When ever i try downloading something, like as in the market or other downloads from google, when ever i exit the app my download stops. This is really annoying because if my phones gets a black screen or i accidentally leave the app it will stop. I had clean master on my phone but deleted it and still happens. Please Help!?

 

[Rick_Moli0212]

You might have background data disabled. Check here to reenable it: BEST FIX: Steps to fix Background data disabled