The AirPlay function will only be available when connecting the FiiO M11 Plus ESS to iOS devices but not Android devices. There are mainly 3 steps.
1. Make sure the FiiO M11 Plus ESS and your iOS devices are connected to the same WiFi network.
2. Switch the FiiO M11 Plus ESS to the AirPlay mode.
3. On the drop-down menu of the iOS device, choose the FiiO M11 Plus ESS as the playing device. So the M11 Plus ESS can receive audio signals from the iOS device.