'Forget' or remove a wireless network from your iOS or Android device so it no longer connects to that network automatically.
For iOS devices such as iPhone or iPad:
- Open Settings and then tap Wi-Fi.
- Tap next to the Wi-Fi network that you want your device to forget.
- Tap Forget This Network, then tap Forget to confirm.
For Android devices:
- Open the Settings app and tap Wi-Fi.
- Long-press the Wi-Fi network that you want your device to forget.
- Tap Forget or Forget Network.