Downgrade Oneplus 9 To Android 11 -

You need the latest security updates, use Android 12’s privacy features, or hate the idea of wiping your phone every two years.

OnePlus has since released OxygenOS 13 (Android 13), which fixes some bugs but remains heavier than Android 11. The consensus in the OnePlus community is clear: Downgrade Oneplus 9 To Android 11

If you are one of those users, you have two choices: live with the lag, or downgrade. This feature explains why you should consider going back to Android 11 and how to do it safely. Before you wipe your phone, let’s be clear: Downgrading erases all your data. Back up your photos, messages, and files. There is no "in-place" downgrade. You need the latest security updates, use Android