Originally Posted by Andrew H.
Samsung has good quality. But Apple doesn't "just buy the parts" (or at least not all of them). Apple designed the A5 chip that is manufactured by Samsung, for example - this is probably the most important part of the phone. On the other hand, the flash and RAM chips that Apple buys from Samsung are AFAICT just off the shelf parts, basically.
It's not that clear who has _actually_ designed the chip. I doubt Apple had know-how in house, to actually do it.
Samsung doesn't simply have "good quality", it has exclusive
screen quality. Most reviews somehow manage not to notice how devastatingly superior AMOLED screens are. Had it been Apple, we'd had detailed reviews focusing on screens and it would become one of the major selling points.