How does the “Button” function change when Nothing Headphone (a) is connected to a Nothing phone?

To enhance the experience for Nothing users, when Headphone (a) is paired with a Nothing phone, the Button gains an additional Channel Hop function, allowing you to switch audio sources seamlessly.
Nothing OS
Press: Channel Hop (switch audio source)
Press and hold: Activate voice assistant

Android/iOS
Press: No function (audio source switching is not supported on third-party devices)
Press and hold: Activate voice assistant

**Note: Channel Hop is only available when Headphone (a) is paired with a device running Nothing OS.