HTC One Remix - Manual (Page 53)

Media gesture is turned on in Settings by default, which makes the
three-finger gesture work only when sharing content or using HTC
apps.
Three-finger tap
While using the HTC Car app, tap the screen with three
fingers to activate the voice command mode.
Opening an app
§ Tap an app on the launch bar at the bottom of the Home screen.
§ Tap to go to the Apps screen, and then tap the app you want to
use.
§ On the Apps screen, tap , and then enter the name of the app
you're looking for.
Your first week with your new phone 53