1, some configurations in the mobile phone are wrong, just reconfigure it, or the mobile phone is not placed on the same LAN as the TV. This is very important.
2. If the TV is a non-intelligent ordinary TV, it cannot support wireless screen transmission.
3. If the TV is a smart TV, the wireless connection between the TV and the mobile phone can be realized by turning on the Wi-Fi display function of the TV and the mobile phone (that is, the wireless display function is supported by most smart TVs and smart phones on the market).