Car Solutions Q-ROI-INFINITY q50 User Manual page 6

4. How to use (Q-Launcher)
④ Navigation Bar
: (Recent App) : User can see running applications and manage them.
: (Home Key): Back to Home screen,
(Long press and dragging to right) Google Now Launching.
: Back
: Sound setting
⑤ Favorite apps
User can put favorite applications to launch quickly.
: (App drawer) See all applications in the system