Zte BLADE A3 User Manual page 22

Pinch

In some apps (such as Maps and Gallery), you can zoom
in and out by placing two fingers on the screen at once
and pinching them together (to zoom out) or spreading
them apart (to zoom in).
Rotate the screen

For most screens, you can automatically change the
screen orientation from portrait to landscape by turning
the phone sideways.
NOTE:
The auto-rotate feature needs to be enabled for the
screen orientation to automatically change. From the
home screen, touch
Advanced and slide on the Auto-rotate screen switch.
You can also access the screen rotation control by sliding
down the status bar twice and touch Portrait.
> Settings > Display >
22