After Airtel now Idea is offering 14GB of 4G Data and Unlimited Calling for Rs. 345 which is now available for selected users
Besides this offer, the company is also giving 6GB of data and 248 talk time with the recharge of Rs. 248 and 6GB of data at just Rs. 148. these offers might be for select people, and they differ from person to person.
Update: Now Idea offers 1GB Data Daily + Unlimited calls for Rs 346 or 347