1. After the Earbuds has established connections with two devices and both mobile devices are in an idle state:
1) The Earbuds will output the sound of the mobile device that receives an incoming call or makes an outgoing call.
2) The Earbuds will output the sound of the mobile device that starts playing music first.
2. After the Earbuds has established connections with two devices and exactly one of the mobile devices is in a music-playing state:
1) When the non-music-playing device receives an incoming call or makes an outgoing call
The Earbuds will mute the currently playing music (without pausing it) and then switch to the sound of the device with the incoming or outgoing call. After the call is ended, it will switch back to the connection of the music-playing device and resume playing music.
2) When the non-music-playing device starts playing music
No sound channel switching will occur. Both devices will be in a playing state, and the device that starts playing music later will be in a muted state.