You can choose between using the external capacitive buttons or using the virtual navigation key, in this way you will gain more space on the screen.How can you do this? Going to:
"Settings" → "Navigation button" and activate it.
How do the commands of this button work?
Main screen: you have to keep pressed the navigation key in the central part for a few seconds.
Back: press the navigation button in the center.
Recent: you must slide your finger on the navigation button from right to left or vice versa.
Open the Google App: you must slide your finger from the bottom to the top of the screen.