Go to Settings-> WiFi, the iPhone automatically searches for visible access points in the area
First, click the AP wireless router you want to use once, and a tick will appear on the left side of the AP, indicating the currently selected AP. By default, the iPhone automatically selects DHCP mode to try to connect to the AP. If the AP requires authentication, the password input window will pop up (sorry, I don't have an AP that requires a password, so I can't take a screenshot). After success, a symbol appears in the upper left corner of the screen, indicating that the connection was successful, and the symbol changes with the signal strength.
3 Manual Configuration
If an AP is only used as a switch, it is necessary to manually set IP and other information. In this case, click the AP to be used (check mark appears on the left), and then click the symbol on the right of the AP to enter the AP setting screen
Because we need to set the information manually, click the Static button. Some AP wireless routers may not be searched. In this case, you can set the information manually. Click to search for \"Others\" below the list of routers