Product test method: - The setup includes: a screen mirroring device, a 1.4 standard HDMI cable (A-type male to A-type male), a mobile phone data cable, and a charging adapter. First, connect the Micro USB connector of the screen mirroring device to the mobile phone's data port. Then, connect the HDMI cable to the HDMI-A female port on the adapter to establish a basic HDMI signal connection. Note that the screen mirroring device requires external power to operate. Plug the phone’s original data cable into the Micro USB female port on the side of the adapter and connect it to a power source to supply power. Connect to HDTV Once the setup is complete, connect to a high-definition display. The display used in testing was a LA40C530 40-inch Full HD LCD TV (16:9 widescreen) equipped with HDMI and USB ports, supporting 1080p HD resolution. Mobile phone screen and HDTV image synchronization When both the mobile phone and the HDTV are powered on and the HDMI indicator appears on either the phone or TV screen, this indicates that the mobile phone's HDMI signal is being successfully transmitted to the HDTV via the screen mirroring device.