Before the introduction of jio I had brought loop sim hardly I used the sim for one week an the sim was not much impressive has they had promised there were problem with the signal strength on current basic some time there use not to be signal at all to solve this problem I have visited the customer care gallery quite times but they could not help me with it the charges for they service was not worth it therefore I stopped using it an afterward hardly I one month jio sim was there I btought jio which you cannot compare with any of the sim in india it is the most useful thing today in india that everyone are using loop does not even stand anyone near it