The most common reasons why your iPhone may not connect to AirPort Wi-Fi contains a weak signal, incorrect password, network congestion, or an issue with your device's software or settings.
To troubleshoot the issue, try the following steps:
- Make sure you are within range of the AirPort Wi-Fi network and that the signal is strong enough.
- Double-check that you are entering the correct password for the network.
- Turn off Wi-Fi and then turn it back on again to refresh the connection.
- Reset the AirPort base station by unplugging it for 10 seconds and plugging it back in.
- Reset network settings on your iPhone by going to Settings > General > Reset > Reset Network Settings. If none of these steps works, you may need to contact Apple support for further assistance.