For iPhone User
*Complete the connection steps according to the manual in the box
The iPhone prompts the alert window, click Trust; and then the smart glasses can cast the screen from iPhone. 
For Android User
*Complete the connection steps according to the manual in the box
Open the Mirroring APP, below window prompts up, choose "Transfer files/Android Auto"
*If the above window doesn't show up, and the interface stays at the below "Device not connected", please unplug & plug again the transfer short cable of adapter to mobile phone.
Click ok
Click Start Now. Now you can enjoy the screen casting.