Airtel mobile service provider has introduced Airtel gifting service in India. Who are having the prepaid Airtel connection can give and take talk time among customers. For getting this facility please dial *141#.
If any customer is having no talk time call his friend then he can send a free message to his friend requesting to -call me back- For getting this facility also you have to dial *141#. But bear in mind that you can only send 5 SMS only in a month.