If you buy a jiofi nice average speed not soo good if you think jiofi gives you 3 to 4 mbps so you are in worng way if u want a wifi at cheap cost so jiofi is the best option I think its gives you 3 month unlimted call net sms so this pretty cool and jiofi said for 4g speed but I dont think that jiofi give 4g speed its like 3g speed connection reliability was good not excelent and the service of jio is nice all customer care help you .but the network of jiofi available in some areas and main is call problem when you call to airtel vodafone idea users your call cannot connect customer care said that this root is busy so this is quite bad of jiofi