1、Open Settings, tap on Wi-Fi.
2、Find the connected Wi-Fi and tap the small circle on the right to enter the proxy configuration interface.
3、Tap "Configure Proxy".
4、Select Manual, enter the server and port.
5、 Turn on authentication, enter the username and password. Tap Save in the upper right corner, configuration is complete.
Search the IP address query in the browser. If the query result matches the set proxy IP, the proxy is set successfully.