Airtel broadband is the good broadbrand which gives good service and good network to the customer.in roaming the service is good.before I used to use aircell but my family told me to use airtel becuse it gives nice network. if we have any network problem they give good service to customer and good support.i think all should use airtell.day before yesterday I got a message that airtel has give you 3 gb network data for free.thank you airtel