Open Control Center. Tap the Airplane Mode icon to enable Airplane Mode. Close the Control Center, and verify that the airplane symbol is indicated in your status bar. Open Control Center again. Then, tap the Airplane Mode icon again to disable Airplane Mode.

1) Open Control Center.

2) Tap the Airplane Mode icon to enable Airplane Mode.

3) Close the Control Center, and verify that the airplane symbol is indicated in your status bar.

4) Open Control Center once more, and tap the Airplane Mode icon to disable it.

5) If your DNS cache is not cleared, a final alternative is to follow the steps to reset your device's network settings.

Outcome

The DNS cache on your mobile device has been cleared.