I use jio sim its great and intenet is very fast.and the network coverage is very great its network is also fast but I am disappointed with the calling of jio sim .it at least takes 10 to 12 calls to connect one person or if ur lucky u connect in the first call but it should be improved but if call is connected the quality of voice is great as the person is standing in front .modi and ambani have done a great job .
So keep going digital india so overall the sim is great because they are offering free call and Internet for 3 months so it a great deal so guyz jio is great