Find "Vibrate"
Press the menu icon.
Press Settings.
Press Sound.
Press Vibrate.
Activate or deactivate
Activate vibration:
Press Always, Only in Silent mode or Only when not in Silent mode.
Press Always, Only in Silent mode or Only when not in Silent mode.
To deactivate vibration:
Press Never.
Press Never.
Exit
Press the Home key to return to standby mode.