Connecting to the library wifi depends on whether it is encrypted or not, which is no different from connecting to the home router.

First, wifi is encrypted.

It is a good choice to ask the staff in the library center. General center staff will tell the password of wireless WIFI.

The master key is installed on the mobile phone. Generally, wifi in this occasion is enjoyed by * * * and can be directly connected. But if you don't enjoy it, the success rate of cracking is extremely low.

Second, wifi is not encrypted.

In this case, directly open the mobile phone wlan to search for the wifi name and connect. Generally, after connecting, open the mobile phone browser, and you will be prompted to do relevant authentication. After authentication, you can surf the internet.