Nokia 9 PureView User GuideLOCK OR UNLOCK YOUR PHONELock your phoneIf you want to avoid accidentally making a call when your phone is in your pocket or bag, youcan lock your keys and screen.To lock your keys and screen, press the power key.Unlock the keys and screenPress the power key and swipe up across the screen. If asked, provide additional credentials.USE THE TOUCH SCREENImportant: Avoid scratching the touch screen. Never use an actual pen, pencil, or other sharpobject on the touch screen.Your phone displayLeaving the phone screen on with maximum brightness level for a long time may cause thedisplay image to remain on the screen even when the screen switches off or when a new imageappears on the screen.To avoid this:• Lock your screen when you’re not using the phone and set the phone screen to switch offafter a short time. Tap Settings > Display > Advanced > Sleep and select the time.• Keep your phone up to date and accept available software updates• Lower the screen brightness: Tap Settings > Display > Brightness level . To adjust thebrightness, drag the brightness level slider. Make sure that Adaptive brightness is disabled.© 2019 HMD Global Oy. All rights reserved. 11