We can say that jio is the best network if we focus on the money but if we focus on network it may not be the best sim.it provides free calls , free 100 sms, 1 GB data per day.but it is good to purchase it if you habe a 4G mobile.It can disappoint you sometimes because it is really difficult to call or message with jio sim.So , I recommend you to download JIO 4G Voice as it can make calls and send messages to any sim very fastly and it also provides a facility of rich calls.