Airtel is best telecom operator.it has many user in India and abroad.airtel provided best service for its user.airtel is 2g 3g and lastest 4g network provider company.it has very good coverage in small village town and many cities and big cities.its highest user in india and they trust on it.
I also use its network and I really enjoyed. it has very good traffi plan for calling sms callertune astrology and isd and internet its very good it has opened challenge for 4g internet of spreed.it has superb speed in 2g 3g 4g internet .i believe on it and its customer care service I suggest for airtel