SMS notification is just an one notification as it informs the user of Android 4.4.4 KitKat users about the incoming SMS. Sometimes, when you are in silence zone or at a place where tone is either not allowed or is not preferred. here the sound notification is not feasible. Here, in this situation, SMS notification by vibration is a preferred way of communication. You may either enable or disable the ‘Vibrate’ mode of the notification by following the instructions.
Instructions
Command Line: Messaging App > Settings Menu > Settings > Settings Screen > Vibrate – Notifications.
1: Tap the ‘Messaging App’ at the Home screen of your Android 4.4.4 KitKat Phone. 
2: At the ‘Messaging’ app screen, tap the ‘Settings’ menu at the top right corner of the screen. It will open up a popup menu.
3: At the popup menu, tap the ‘Settings’. 
4: At the ‘Messaging Settings’ screen, see the status of the ‘Vibrate’ under the ‘Notification’. It is not checked, i.e. disabled. 
5: Tap the ‘Vibrate’ under the ‘Notification’ to enable it. 
Now, when you will receive an incoming message, it will be notified by vibrate.