My experience of Jio is that , in case of internet speed the Jio is even best than Airtel and vodafone but the speed is drop in several areas and is some area even worst and guys the call drop is big problem I have face it but as it is free u can use but I am not sure about u can make phone call when u want to call by Jio Sim is really make u sad in some case and in some areas but I think after 31 march the call drop will goes to zero and speed of internet will improve in all area and charges are also less than any other sim operater in India .