Please refer to the threshold for Free Limits across India in different categories:
With the activation of free limits package, a user can post ads beyond the defined free limit in the stipulated category. Package activation makes the contact information public so that the prospective buyers can directly contact him. This increases the chances of fast selling of the products.
Once the contact information is public, it would always be available for all prospective buyers irrespective of ads posted in any category and can not be hidden.