I have been using aitel for last 10 years and I come to one conclusion that your network is wrost, airtel network is opposit of what they show in their cammercial ,
I have 4G lte phone & 4g sim still I have been using 2g speed not even 3G I called them but no improvement in internet speed my jio has much better speed then airtel
, when u can not get speed they would blame your handset , to be asked you to do fuitle exercise like putting him in 1 slot and restart the phone ,
they simply took my money never gave my deta to use. Airtel always create the problem to their customer , they will never resolve one single queries , worst network ever , not even in dream I will recommend anyone else,