Answer:If your TV is not a smart phone, please check the menu options on the remote control or the online help documentation, where there may be steps that specifically describe how to turn on the TV developer mode
Answer:Make sure that you have closed all applications that may interfere with the projection, and that the distance between the phone and the TV is not too far.Sometimes simply resetting the device or restoring factory settings (pay attention to backup important data) may also solve the problem