Q: What is the difference between the switch model and the free cut model? A: The same screen device supports wireless WiFi connection for iPhone and Android systems. The switching model is to select the connection for iPhone and Android modes. When you need to switch the boot page, manually press the button on the side of the product, and switch to the corresponding mobile phone mode to connect to the product hotspot. You can connect directly without cutting, and the two mobile phone systems are automatically recognized on one boot page. The built-in WiFi signal receiver is on the product circuit board, and the external WiFi is the receiver on the usb power module. The external signal is more stable. Wireless Display - The Wireless Adapter Allows You To Watch Videos From Small Screens To Large Screen Devices (Tv/Monitor/Projector). Wirelessly Display Small To Large Screens, Support 1080p, And Enjoy High-Quality Images. 4k Video Display - The Smartphone Adapter Supports Up To 1080p Video Display, Which Can Mirror The Content Displayed On The Device Screen, Such As Patterns, Videos, Files, Games, Presentations, Websites, Music, Movies, Etc., Connected To A Compatible Tv And Monitors, Projectors, And Other Compatible Devices For A High-Definition Experience. Very Suitable For Home Theater Entertainment Office, Demonstration Exhibition, Teaching, Etc. Practical Design - Designed With An Extended Cable, It Can Be Easily Plugged Into Your Tv. Features An External Wifi Antenna That Confirms A Strong Wifi Connection, Is Easy To Install And Provides A Better Signal. Portable And Durable - Ensure High-Speed Transmission And Clarity Of Hd Video And Digital Audio. High-Quality Pvc Material Makes The Bending Life Up To 10000+, Durable And Lightweight, It Is A Compact And Portable Smartphone To Adapter. Easy To Use - No Apps Or Drivers Required. It Only Takes A Few Minutes To Connect And Cast. Just Connect It To Your Tv And Turn It On, Find The Mirroring Feature On Your Device And Cast. Automatically Recognize Your Ip Address And Match It To Your Local Language.