As we know the airtel is a oldest telecom company and the signal strength is awsom this is the only quality in this company otherwise this is a very high cost company the call rate is very high then other network providers . the speed of airtel 4g is also same mostly you will not get the 4g coverage area. I buy two new airtel sim cards of airtel so that I can use airtel 4g they gave me 1 gb 4g then 128kb normal speed data for one month I spend 400 on each sim card but the data used in one day and they told me to they will gave me 128 kb speed after 1gb but when I use after 1 gb it works as snail 3 kb to 20 kb it always say lodeing . lodeing. even when I search something on googel for me airtel got 0 stars