Android still doesn’t handle USB audio very well. USB DAC dongles have their own volume settings, however Android doesn’t ever change this. This means that if a dongle has a preset volume level that is relatively low, android can never go above this.
Someone on Reddit has written a better explanation: https://www.reddit.com/r/headphones/comments/11wfe05/android_dongle_volume_issue_lets_ask_for_a_fix/
Help us get this issue higher up on android’s priority list by pressing the +1 button. I know it probably doesn’t affect many users here but thank you anyway!
Classic Google, mocks apple for removing the aux port. They then remove the aux port and don’t even bother implementing the aux dongle protocol correctly.