I use idea service it is very slowest 4g network I ever have it some place it netwokr catch & some place it network not catch its internet speed is very slow like 2g and it is slowest internet always it network change in 4g to 2g when ever I contact to customer care they reply me that there is no 4g network in your area they always call for bill payment but for my issue they dont clear it customer care also not repy they just reply that in ur place no 4g network I really dont like it.