How do some wireless networks that need mobile phone number verification connect to computers?

You can use a router. You can choose dynamic IP or fixed IP (depending on your community network) to access the network. After verification, you can connect with your mobile phone. Plug the computer into the router. If you need wireless connection, you can set up wifi and connect your computer to your own wifi, so you don't have to use your mobile phone to authenticate every time you surf the Internet.