1, using smart screen applications. First, make sure that your mobile phone and Changhong TV are connected to the same Wi-Fi network. Then, turn on the "Miracast" or "ScreenMirroring" function on the TV, and download and install the corresponding screen projection application on the mobile phone, such as "Music Broadcast Screen Projection" or "Fast Broadcast Screen Projection". After installation, open the application and select the TV device to be connected.

2. Use the DLNA projection screen, open Settings on the phone, find the option of "Other wireless connections" or "DLNA", and make sure that the DLNA function is turned on. Then, select the content (such as video, photos or games) that you want to project from the mobile phone, and project the content onto the TV through DLNA function.

3. use AirPlay for screen projection. If you use an Apple phone, you can directly use the "AirPlay" function in the control center to select your Changhong TV for screen projection, so as to ensure that both your Apple phone and TV are connected to the same Wi-Fi network.

4. Connect the mobile phone and TV directly with HDMI cable. After the connection, you can select the corresponding HDMI signal source on the TV, and the content on the mobile phone will be displayed on the TV.