Question [Q] How to push to system

Hi, i am trying to push this app to system,
This app is great, very useful to avoid the using of home button.
However, every time I restart the phone after pushing it to system and set the right permission, It never be installed.
I wonder what's wrong ?
I've installed it on my another phone without any problems, and guess what ? It works like charm !

I am SM T211 owner anyway
my device is rooted, stock

any help would be highly appreciated
Attached Files
File Type: apk Mi-POP__4.0.apk - [Click for QR Code] (1.90 MB, 9 views)