How does a mobile phone screen a computer monitor?

Method 1:

First of all, we can connect our mobile phones and computers to the same wireless network through the projection function of Win10.
Next, we will find the Settings option in the Start menu bar of the computer.
Then we go in and find the system option, click in and find and click to project to this computer, and then we change the default always off drop-down option to all locations available.
Then we can start to operate our mobile phones, our mobile phones have their own wireless screen projection function, we find it in the phone Settings and turn it on.
Finally, we open the projection button of our mobile phone, and the mobile phone will automatically scan the surrounding photo devices, and then we click the connection.

Method 2:

We can use video clients to cast screens, such as iQiyi, Tencent, Youku (but only for playing videos).

Method 3:

First of all, turn on our mobile phone, such as the screen mirroring function of the iPhone.
Then click in, it will automatically search for the surrounding screen device, after the search click on the connection.