Spotify says it’s working with Apple on a solution, but for now you have to use a newly added volume slider on the app.
Source : Spotify Says Apple No Longer Allows for Physical Volume Controls on iPhone Connected Devices
Spotify says it’s working with Apple on a solution, but for now you have to use a newly added volume slider on the app.
Source : Spotify Says Apple No Longer Allows for Physical Volume Controls on iPhone Connected Devices
