If You want the new features you can switch to 9,but it's worse in terms of performance and battery life.
I passed from 4:30 hours SOT to 2:30 SOT, overheating, apps getting closed, apps crashing, etc. Then I switched to RR 5.8.4 ( smooth performance, 3:30 hours SOT) and finally I am on LOS 15 based in Oreo, extremely fast, 5 hours of SOT.
Trimis de pe al meu Mi-4c folosind Tapatalk