Always use stable oxygen os or hydrogen os in primary.Otherwise proper radio/firmware file not installed in systemI am using Rr7.1 on primary and beta 8 on secondary with flashed beta 8 with bito twrp, Also i am on f2fs in data and cache on both roms.
and Rr is working fine but on oos there's just one problem no voice in calls.
What could be the cause of this?