In a lengthy post discussing Gizmodo’s procurement of a fourth-generation iPhone prototype, Daring Fireball’s John Gruber has offered up some previously-unknown details about the device, citing inside information from Apple sources familiar with the project. Referencing one of the barcodes found on the outside of the device, “N90_DVT_GE4X_0493,” Gruber writes that “N90” is Apple’s internal codename for the fourth-generation…
