I ordered a battery replacement for my 1st generation iPhone (4GB) so my 1yo daughter can use it on this fisher price toy that we got her. I was surprised that apple replaced the entire device instead of just replace that battery. Surely I thought they wouldn't have any 4GB iPhone 1st gen (one of the rarest iPhones).... but when I looked up the serial number of the replacement device that they are sending me, this was the information that it got out of the serial number. Model: - iPhone Codename: - M68 Build Country: - We don't know where this unit was built. Build Year: - This unit was built in 2012. Build Week - Your device was built in week 39 of that year (September). Production Nr.: - This unit was number 17 to be built that week. Serial number began with a QR. With same capacity (4GB) I wonder how long will apple continue to build them.