You must use a Nougat ROM that fully supports the OMS / thematic bedrock!
USE AT YOUR OWN DISCRETION ON A SAMSUNG DEVICE !!! Does not work properly as far as I am aware.
+ SMS backup and restore
+ Spotify
+ SuperSU
+ SystemUI
+ Telecom
+ TeleService
+ Textra
+ Youtube
Supported Android
Download Substratum Luminous Theme 3.1.1 Patched APK For Android