in home of community oxygen os 11 beta 3 is launched you better install that one.
always on display and similar to samsung one ui
Yes no flash of data and no imei no. wil be losted
You can. But it will fornat all the deta wait for the oxygen os 11 final it will be crossed flash and your hydrogen os will convert into oxygen os...
Just disable it.
In global update it will be removed itself
No all uninstalled
Already taken but not required because it will just update to another version of android without wiping anything
No just cross flashed with oxygen os