This video demonstrates how to check the display state of an Android device, displaying “ON” if the screen is activated and “OFF” if it is deactivated. The accompanying source code uses the DisplayManager to achieve this. The video also provides a link to the full project folder for purchase and offers support for any inquiries or payments. Screenshots of the display under different conditions are included. For further details or to obtain access to the complete project folder after payment, please visit https://programmerworld.co/contact/ or email programmerworld1990@gmail.com.