Hi all, hopefully a known issue: Spotify works fine while phone is unlocked or locked when output to Bluetooth headphones, but when paired with USB DAC (BTR5 by Fiio) it only plays while phone is unlocked and Spotify crashes the second phone locks. Is there a setting I'm missing?

Have you tried allowing new USB peripherals while locked under Settings -> Security -> USB peripherals?

    f13a-6c3a have you granted an app complete control of the DAC? Can you please uninstall said app if so and try again when using the stock android usb audio driver?

      MetropleX I install no additional apps for the DAC - just used Spotify to play music and plug-in the DAC via USB, so, I guess I am using the stock USB driver

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      • Edited

      I have a very similar problem; I use a dongle (usb-c -> 3.5mm jack) to connect headphones and listen to music and it stops working when the phone gets locked (either manually or automatically). The only (impractical) solution I found was to plug the dongle while the phone is unlocked and under "security" -> "screen locking" temporarily set the delay for "autolock after sleep" to 30mn instead of "instantly" and also disable "lock instantly using the power button", and revert these settings when I'm done using headphones, which is really less than ideal...