The AirPlay function will only be available when connecting the M17 to iOS devices but not Android devices. There are mainly 3 steps.
1. Make sure the M17 and your iOS devices are connected to the same WiFi network.
2. Switch the M17 to the AirPlay mode.
3.On the drop-down menu of the iOS device, choose the M17 as the playing device. So the M17 can receive audio signals from the iOS device.
