I HAVE USED AIRTEL NETWORK FOR 5 YEARS NETWORK COVERAGE IS TOO GOOD INTERNET SPEED IS TOO GOOD FOR ANOTHER NETWORKS VOICE QUILTY IS TOO GOOD SOME TIMES HAPPENED ANY PROBLEM BUT CUSTMER SERVICE IS EXCELENT SOLVE PROBLEM 1, 2 HOURS AND I ANOTHER USED POSTPAID SERVICE IS TOO GOOD BILLING RATES TO MEDIUM CALLING RATES IS LESS FOR OTHER NETWORKS AND AIRTEL ONINE ALL APPLICATION IS VERY GOOD I LOVE THIS NETWORK THATS IT