Question

Which is the best WiFi provider in India?

Answer 1

Among internet service providers, MTNL and Airtel have the widest coverage in places like Mumbai. There are Wifi dongles as well that could work well and are reliable (even if not super fast). They provide 2-5MBPS, and ones such as TataPhoton, are reasonablly good. 

Answer 2

now it's Airtel because it gives a router giving most internet possible and cheap and second is of Hathway