Remove Wi-Fi Connection - Nokia Lumia 822

  1. From the Start screen, swipe left to display the Apps list.
    Note Alternatively, tap the Right arrow Right arrow icon (located in the lower-right; may require scrolling to the bottom of the Start screen).
  2. Select Settings.
  3. Select Wi-Fi.
  4. Ensure the "Wi-Fi networking" On/Off switch is enabled (On Switch On icon ).
  5. Tap on manage (located at the bottom). 
  6. Select and hold the Wi-Fi network.
  7. Tap delete.