Dear Samsung Member,
Greetings from Samsung Customer Support!
Please be assured and to resolve "vibration" issue kindly check in Samsung Members Application, Go to, Samsung members Application > Get Help > Interactive Check > Vibration > Check Vibration Motor.
If phone vibrates, then there is problem in software or else the motor needs to be replaced, so for that you have visit service center, as your device needs physical inspection. To check for the nearest Samsung service center kindly click on the link: https://www.samsung.com/in/support/service-center/
Thank you for writing to Samsung.
Samsung Customer Support