When receiving to the Redmi Note 5 phone, only the sbc codec works. Can't switch to another one. Even after ating through the proprietary mi ai application. There is obvious background noise and acoustic interference in the sound. In general, the sound quality is at the level of the cheapest wired headphones. When googling, it turned out that such a problem is not uncommon with mi phones. There is no proven solution. I do not recommend.