Adding another one Phone: Essential PH-1 OS: Android 8.1.0 (May security update) Poweramp Build: 709 Why it Should Work: It uses the Snapdragon 835 processor. Essential also makes their own Bluetooth headphones that are marked as Hi-Res Audio using Qualcomm aptX HD Audio. The PH-1 also does not have a headphone jack, so all audio must be over the USB port, if that makes any difference. I think the USB to 3.5mm adapter Essential includes in the box is some kind of Cirrus Logic DAC.
Sony Xperia XZ1 Android 8.0.0 (Sony's skin) Snapdragon 835 and Sony heavily markets this flagship phone as HD Audio capable, it even marks 24-bit HD Audio tracks in their music app as HD.