Vodafone Happy Hour is an offer for Indian subscribers in which customers can get free data/reduced call rates(v2v)/sms from 2pm to 4pm every day. These offers usually kept on rotating.
In south India subscribers are mainly greeted with free data/calling offer in the Happy Hour section, both these offer came free of cost.
But now the scene have changed, when I dialed happy hour USSD *444*88# I was greeted with free 100MB data and RS 5 is needed to get this offer!
This was my experience in Kerala. Share your own experience in the comments.
To know the Vodafone Data Balance dial *111*6*2#