Device lock: Microsoft Lumia 640

Learn how to lock and unlock the Microsoft Lumia 640.

 

 

 

Change password / PIN

  1. On the start screen, swipe down from the top of the screen.
  2. Tap ALL SETTINGS > lock screen.
  3. If necessary, tap the Password slider to turn it On.
  4. Scroll down to and tap change password.
  5. Complete the fields, then tap done.

 

Turn on / off

  1. On the start screen, swipe down from the top of the screen.
  2. Tap ALL SETTINGS > lock screen.
  3. Scroll down to and tap the Password slider to turn on or off.