I use my father's mobile . My father took a jio sim . At that it was famous for providing cheap internet connection . But in my area the coverage of jio is very poor . Its speed is rather poor than 2g also . Only thing is that I we can call easily . We can use only 5 to 10 percent of data per day because of poor speed. I have called 2 times to customer care and registerd complaint but no improvement . I am thinking about to chsnge my sim . But people say that they are happy with jio because they are from urban area and I belong to rural area