HTC Desire 326G dual sim User Manual page 19

19 Your first week with your new phone
Flick
Slide with two fingers
Flicking the screen is similar to swiping, except that you need
to swipe your finger in light, quicker strokes, such as when
moving right and left on the Home screen, or flicking through
a contacts or message list.
In some apps, like Gallery or the web browser,
slide two fingers apart to zoom in when viewing
a picture or text.
Slide two fingers together to zoom out of the picture or text.