HTC X+ - Manual (Page 22)

HTC gestures is enabled by default, making the three-finger gesture exclusive for
sharing content. You also won't be able to use multi-finger gestures (gestures that
use three fingers or more) in apps such as games or musical instrument apps.
To use multi-finger gestures in such apps, clear the HTC gestures option in Settings
> Display, gestures & buttons. This disables content sharing.
Motion gestures
Use motion gestures to mute HTC One X+, turn on the speakerphone, and more.
Flip to silence / flip for speakerphone
When a call comes in you can turn
HTC One X+ over to mute it.
While in a call, turn HTC One X+ over to turn the
speakerphone on for hands-free conversations
or for conference calling.
Pick up to lower volume
In a business meeting or restaurant, pick
HTC One X+ up when a call comes in to
lower the ringtone volume.
22 Your first week with your new phone