Microsoft Lumia User Manual page 16

Zoom in or out
Place 2 fingers on an item, such as a map, photo, or web page, and slide your fingers apart or
together.
Important: Avoid scratching the touch screen.
Tip: The screen rotates automatically when you turn the phone 90 degrees. To lock the
screen in its current orientation, on the start screen, swipe down from the top of the
screen, and tap ALL SETTINGS > screen rotation. Switch Rotation lock to On
Screen rotation may not work in all apps or views.
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