Prerequisites
The smartphone should have at least 40 percent battery or you can keep the phone connected to the wall charger during the process.Make sure to create a backup of all your important data because the installation will wipe the system.Download the correct ROM package according to your device. OnePlus 6 and 6T both have different ROM packages.The first boot may take some time so do not panic and let the phone boot, it may take up to 5 minutes.
Steps to Revert back to Android 9 Pie
Conclusion
Android Q is still in beta version but if you want, you can download and try later beta versions to check out more features. OnePlus will release the Android Q to OnePlus 6, 6T, 7 and 7 Pro right after the official launch.
