HTC Desire 820 User Manual page 27

27 Your first week with your new phone
Flick
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.
Press and flick
On the Home screen, you can easily move a widget or icon from one screen to
another.
Press and hold the widget or icon with one finger, and flick the screen to the new
location with another finger.