HTC Butterfly manual Pinch and spread, Two-finger swipe

23 Your first week with your new phone

Pinch and spread

In some apps, like Gallery, Messages, Mail, or the web browser, spread your fingers on the screen to zoom in when viewing a picture or text.

Pinch the screen to zoom out of the picture or text.

Two-finger swipe

In some apps that have sorting, like Mail or People, swipe up or down using two fingers to scroll the screen. The screen displays the sorting order, and you can easily scroll to the information you want.