If this sim is for ipad and/or iphone it's probably too small for any other phone, you can use it but only if you have an adapter, if you don't, then buying a sim card will be cheaper. on the other hand, this card will be perfect for those people with unlocked iphones and without an original sim (if you fall within this category you know why). Note: I'm not trying to sabotage your auction
SIM CARDS ARE FREE AT AT&T!!I don't understand why you would buy a SIM card when all you have to do is go to AT&T and ask for one.This sim card will not work in your phone,it has to be registered with AT&T,for your phone.Sim cards cannot be switched to another phone UNLESS the sim card is yours and you are putting it into a different phone.You cannot just walk down the street and put any old Sim card in your phone.In order for it to work on a phone,IT MUST BE REGISTERED TO YOUR ACCOUNT.I checked this out with AT&T.Call AT&T your self.SIM CARDS ARE FREE.