Screen projection needs to be achieved through the mobile phone and TV in the same WiFi network environment, so check whether the two are in the same network name WiFi; It may be that the current software does not support screen casting, or it may be because your TV does not support DLNA or AirPlay. Here are the details:;
1, some configuration errors in the mobile phone, reconfigure it, or the mobile phone is not kept in the same LAN with the TV; Check whether your phone and TV are linked to the same wifi, if your phone uses 4G, your TV uses wifi, it will be embarrassing, naturally, it will not be cast for a long time;
2, even if connected to the same WiFi, some software due to copyright and other considerations, turn off the screen casting function, you can try to download the corresponding third-party screen casting software on the phone, and then try the screen casting;
3, if you are the first time to cast the screen and find that you cannot cast the screen, it may be that your TV is not equipped with the corresponding DLNA or AirPlay function, which is also unable to achieve screen casting.