This Substratum theme is for Aosp 7. 1. X Custom roms with OMS7 and 8. 0 beta OPP4.! Not for android 5. X or 6. X!! No Legacy Support! Use at your own risk on stock roms! Android 8. 0 support is very beta so expect bugs! Tested on Screw'd, DU, Pure Nexus, AOSIP, RR, Validus, AICP, AOKP and Tesla. Telegram group for help, questions or chat.