It may seem that this is a meaningless set of symbols, but it is not. Because this update doesn't work on 3GS models which were released after 28th week of 2011, that's why you need this iPhone serial number decoder.Īny mobile device from Apple, which is produced on such factory as Foxconn or other, receives a serial number, consisting of eleven characters. It is good, for example, for those iPhone users who need to update 3GS baseband to 06.15.00 (iPad baseband) to unlock it but don't know the date of release. The best way to decode iPhone serial number is to read this post because we all know that every iPhone has serial number but many of you don't know how to decipher it and check when and where the device was manufactured.