Open "Settings" app 
:
- tap on "Sound & notification",
- tap on "General" 
,
or
- tap on "Other sounds",
and
- tick/untick the box "Vibrate on touch".
HIGHWAY PURE - HIGHWAY STAR - LENNY2 - PULP 4G - PULP FAB 4G - RAINBOW JAM - RAINBOW JAM 4G - RAINBOW LITE 4G - RAINBOW UP 4G - RIDGE 4G - RIDGE FAB 4G - SELFY 4G -