If any one is searching fast and reliable connectivity then you can go with the airtel 4G.
why airtel 4G?
1)Fast:- it gives fast transmission speed upto 22mbps and a uploading speed of 1.87 mbps.
2)reliable:- I have used airtel 4G, it has never stopped working, sometime due to weak signal strength it creates some issues, otherwise it is reliable.
3)Wireless:-we don’t need to spread wires in a network place, only things we need to have a modem.a sim card and power equipment.
4)Hotspot:- we can create hotspot by putting simcard in a hotspot device by which we can use 4G network with different 4G devices. if we talk about the cost then it is so expensive with respect to other service provider, it gives 50GB of package in approx 3000 INR, and when limit is crossed you can’t browse properly, And cost of extra data is also high, service and support is good in metropolitan area, I suggest for small town to go with the other network provider coz sometimes for small cities it take a lot of time to settle bad network issues.