Accessing Camera and Microphone of Nreal Light

Hi,
I’m using Gree Unity WebView to access a web page within a Unity app, and I’m trying to access the camera and microphone of the Nreal Light device.
I want to send video and audio data to a web server in real-time.
I connected Nreal Light to my android device but when I use ‘navigator.mediaDevices’ to check available cameras and microphones, it doesn’t seem to be working properly.
It would be very grateful if you give any help with using camera and microphone of Nreal Light.