Originally Posted by haremmon
After installing host file through adaway, may I greenify this app or should I let this app running in the background?
All I can tell if this app runs in the background is to check updates. But correct me if I'm wrong.
Yes I think you can, as long as you don't use the webserver (not sure about this though). Adaway modifies the "hosts" file. With no use of the webserver adaway is just used to update.
In greenify you can lookup your app. If it's has the cloud icon in the upper right corner with "Gcm" written in it. It is better not to greenify that app. This because, for example it uses push messaging.
Send from my Nexus 4