When you will activate and set the feature of vibration on answering the call on Android KitKat 4.4.2 phone, the phone will vibrate when you will answer the incoming call. It would remind you that you are receiving the call and you have not called the contact.
To activate this feature, just follow the instructions:
Command Line: Phone Dialer > Settings > Call Settings > INCALL VIBRATION – Vibrate on answer.
1: Tap ‘Phones Dialer’ on the Home screen of Android KitKat 4.4.2 Phone.
3: In the ‘Settings’ popup menu, tap the ‘Call settings’.