Samsung SM-S890LZKATFN - Manual (Page 35)

Side Views
The following illustration shows the side elements of your device:
2
1
1. Volume key allows you to adjust the ringer volume in standby
mode (with the phone open) or adjust the voice volume during
a call. When receiving an incoming call:
• Pressing the volume key down mutes the ring tone.
2. Power/End key switches the phone off and on.
Press and hold for two seconds to turn toggle the Silent mode
or Airplane mode states, turn the device on or off, or Restart.
Understanding Your Device 28