Forgetting a Wi-Fi network in iOS 9 removes the saved network information from the iPhone. The next time you want to connect, you will normally need to select the network again and enter its Wi-Fi password.
Forget a saved Wi-Fi network
- Open Settings.
- Tap Wi-Fi.
- Find the network you want to remove.
- Tap the information button beside the network name.
- Select Forget This Network.
- Confirm that you want the iPhone to forget it.
When forgetting a network can help
This can be useful after a router password changes, when the iPhone has saved incorrect connection information, or when you no longer want the phone joining a particular network automatically. Reconnecting creates a fresh saved Wi-Fi configuration.
Know the password before removing the network
If you still need that Wi-Fi connection, make sure you can obtain the correct password first. Forgetting the network removes the saved credentials from the device and can leave you using cellular data until you reconnect.
Do not forget the wrong network
Check the network name carefully, especially in apartments, hotels, schools, and offices where several similarly named networks may be visible. A managed work or school Wi-Fi profile can also behave differently from an ordinary manually joined network.
iOS 9 is an obsolete operating system and no longer receives current security updates. The general “Forget This Network” feature still exists on modern iPhones, but menu appearance has changed. For sensitive online activity, use a device that can run a currently supported iOS release and avoid joining untrusted open Wi-Fi networks merely to test connectivity.

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.