I'm searching it too!
though I had upgrade to MiUI13,The Android 13 has the LC3 bluetooth codec.
The bluetooth codec spec I found for Xiaomi 11T is SBC/ACC/Aptx,Not sure for LHDC 4.0 and LC3
Is there anyone knows which bluetooth earphone is the best chice for Xiaomi 11T ?
I already buy a Redmi Buds 3 pro,only support AAC codec,I missied the Redmi Buds 3's Aptx codec,because misunderstanding their names(they always hide spec on sale)
I'm concidering to buy Xiaomi Buds 3t pro for LHDC 4.0,but the CallCenter did not email me the anser of compatable,after I ask to the callcenter for days