in settings, for vibration intensity try changing it value in doing so the phone does vibrate to show you how intense it is , do you feel the vibration there ?
if in settings it works then try changing your ringtone to some pre defined ones of samsung rather than your custome then put the phone to vibrate mode and see if it works ...
if none of these works for you then I am afraid I cant think of any solution ... may be try a factory reset but you will loosee all ur data...
any other members here pls suggest...
@ saj_2001ind - Thank you so much!!! Yeah I was able to feel the vibration intensity. It works now after changing the ringtone to some pre defined ones of samsung rather than the RingDroid.
You have been of great help. Saved me from a factory reset!!
Thanks again!!