Samsung Galaxy Grand Prime - Manual (Page 18)

Getting started
18
Turning the device on and off
Press and hold the Power button for a few seconds to turn on the device.
When you turn on your device for the first time or after performing a data reset, follow the on-
screen instructions to set up your device.
To turn off the device, press and hold the Power button, and then tap
Power off.
Follow all posted warnings and directions from authorised personnel in areas where
the use of wireless devices is restricted, such as aeroplanes and hospitals.