Documentation for custom volume key docking
- Description for debugging devices
- Description for App release
- Description for codes such as permissions, fullscreen, acquisition system versions, etc.
- Print and customer display description
- External interface description
- Documentation for custom volume key docking
X2 second screen is a standard android support second screen device. The developers can refer to android second screen development document.
Sunmi has provided a simple & easy demo in (General Function Modules ) to show how to use Print , Scan QR code , Use the functions of secondary screen, Face Pay , etc