I would give it a "-5" if I could. It is not the first time I tried to use this useless App. But I have a "new" Note 20 Ultra and desided to try again. No difference, utterly useless App. I just use my H9i phones via my BT connection on my phone. I purchased these H9i back in 2018 as a BT alternative to my Bose QC3, QC15 & QC25 phones. What a great mistake! Should have purchased the QC35 Bose BT phones. One would have believed that 4 years later B&O would have a working App. Not to be :-(