3.
Under Notifications and alarms, turn Alarm vibration on .
If you never want alarms to vibrate
1. Go to Settings > Sound & vibration.
2.
Tap Vibration & haptics and check that Use vibration & haptics is on .
3.
Under Notifications and alarms, turn Alarm vibration off .
This overrides the vibration setting on the individual alarm.
Settings : Sound & vibration 215