Jio speeds are awesome but one con that I hate is it only 4g operator no 3g 2g fallback other network Like Vodafone-Idea, Airtel, Bsnl-Mtnl has Advantage over this because they support all handsets but if your handset is damaged you need to purchase a 4g device or wait for repair of your handset u cant use any cheap eg. any 3g 2g phone for data and voice services.