Isn't it necessary to verify the public wifi connected to Unicom before it can be used? How can I verify the connection between the computer and public wifi?

Generally, after connecting to the operator's WIFI (Unicom, Mobile, Telecom), a webpage will be opened. If you connect normally, a portal page will pop up, which is what we usually call login verification page. If you have the mobile phone number of the corresponding operator, you can enter your own mobile phone number, receive a dynamic SMS verification code, and log in after entering it.

Special reminder, many of them are charged now, please pay special attention.