valerie is a substrate power supply that theme supports various device and operating system like Android 7.1.x Nougat, Oreo 8.xx, Samsung Oreo and Oxygen OS Oreo. You should be running a supported OMS ROM for this theme to work.
+ Select Samsung Oreo above the collection list
+ Select all or check the options in the overlays
+ Apply by selecting Build and Update in the fab menu
+ Select Oxygen Oreo OS over the overlay list
+ Select all or check the options in the overlays
+ Apply by selecting build and activate in the fabulous menu.
Supported Android
{7.0 and UP}
Supported Android Version:-
Nougat (7.0 – 7.1.1) – Oreo (8.0-8.1)
Download Substratum Valerie 8.5.0 Patched APK For Android