Method for mobile phone to screen old projector on the same screen

There are two common methods for old projectors with the same screen: using wired connection and using wireless connection.

The first method is to use wired connection: first find the HDMI (High Definition Multimedia Interface) converter of the mobile phone, and then connect the HDMI converter to the mobile phone. Then find the HDMI input port of the projector and plug in the HDMI interface. Finally, turn on the "screen projection" function of the mobile phone, and the picture of the mobile phone will be automatically projected on the projector.

The second method is to use wireless connection: first, you need a projector that supports Miracast/Airplay. Turn on the "screen projection" function of the mobile phone, and then enter the Wi-Fi password on the projector to connect to the wireless network. Then select the name of the projector on the mobile phone and wirelessly transmit the screen of the mobile phone to the projector.

Generally speaking, wired connection is simpler and more direct, while wireless connection requires the projector to support a specific wireless projection protocol. Therefore, when using wireless connection, it is necessary to ensure the compatibility between the projector and the mobile phone. Whether it is wired connection or wireless connection, you need to use the corresponding adapters and converters to connect the projector and the mobile phone, so you need to pay attention to their supporting interfaces and device compatibility when choosing.