I naturally expected a product line split. It would have made perfect sense to have a top-end 4" 960x640 phone and a low-end phone using the old screen, less RA

I naturally expected a product line split. It would have made perfect sense to have a top-end 4" 960x640 phone and a low-end phone using the old screen, less RAM and other money-saving components. Since the 2009 introduction of the iPhone 3GS, when the iPhone 3G went on sale for $99, they've done exactly that. A year later, the 3GS followed it at that price. The downside is that when the 3GS was finally discontinued, it was two years old and had 1/4 the RAM of the then-current iPhone 4, leading to maintenance trouble for the OS and app developers.