Hello everyone today is my review is true on behalf of my ussing im buy this Vodafone sim in 2012 for my best friend similor number 9711.5049. But vodafone give very higher postpaid bill everymonth now this sim my not use then voda compny people ask my problm then he manger say convert sim to pre im do but 3rd class servise internet no work for me best is airtel