Bluetooth volume is very low on iQOO Neo 9 Pro (PD2338BF_EX_A_15.1.14.2.W30) with KZ Carol Pro earbuds. On Redmi Note 12 with LDAC the same earbuds are much louder. Tried all codecs (LDAC, AAC, SBC), Safe Mode, resets, absolute volume toggle → still low. Please fix Bluetooth audio gain.