The bestest of 4g networks is Reliance jio and it provides you the best 4g services in india.
The network coverage of jio 4g is a bit disturbing in some areas of the valley and outside valley.
I tried it at noida also network coverage of jio was very weak there.
So I would suggest to the people of india that if you are getting good network coverage in your locality then switch to jio 4g services.
Customer Support Services of Reliance Jio are very nice.
Also Speed isues are there especially between 7: 00pm and 10: 30 pm.
Charges are far better than other companies. Its 4g services are very cheap.