Nokia Lumia 820 - How do I configure my number to be private when I call someone on my Nokia Lumia phone?

  1. On the start screen, select Call menu.
  2. Tap the 3 dots (...) at the bottom right of the screen.
  3. Select settings (Windows Phone 7: Call settings).
  4. Then tap Show my Caller ID to scroll the list.
  5. Select either Everyone, no one or my contacts.
  6. Once ready tap the Back key.