I hape the P20 pro and FiiO Q1 II - it works perfectly with UAPP. How have you got it configured? What EMUI version are you on, im on the latest EMUI 10.0.0 (version 10.0.0.161) however with my "non-otg" DAC (the small dongle/adapter type DAC with a Realtek ALC4050) that ...