Jio sim you should buy just for free.It has slow speed compare to other networks but it is free. For daily purpose like seeing feeds in facebook, messaging, using whatsapp, or streaming the regular speed is good. But the problem is in calling we should have the jio4g app for calling but it doesn’t work’s sometimes.And one more thing to be noticed that the rates or packs for recharging jio shown in my jio app are too expensive compare to nowadays recharge plans of other sim cards. But it is free from last 4 months so it has gained its high rates of customers. And again the news is viral that jio will be free for more 3 months till june 31st by just a recharge of within 100 something.The network coverage is also good but it is available full in only town areas. We can’t get sufficient network in outer areas. But if you are leaving in a town I prefer u to buy the jio sim card now itself you can enjoy it till june or more.