Unable to download apps from Play Store using mobile data I have Mi4i mobile. I am trying to download  applications from Google Play Store- when I click on Install it  displays  "Waiting for WIFI...". 

I am on mobile data, but it is not downloading through mobile data.

How can I download through mobile data?
For MIUI 8(previous versions also).
Check your 'Security' app's -> Data usage -> Restrict data usage -> System tab. Within system check Downloads is allowed to use Mobile data.