> iPhones could get away with less ram since the CPU is very fast and the OS and apps seem to be faster too Too little RAM is taxing storage since the OS is sw

> iPhones could get away with less ram since the CPU is very fast and the OS and apps seem to be faster too Too little RAM is taxing storage since the OS is swapping out/in pages from and to memory, and to a way lesser extent to the CPU. The second part of your sentence does not make much sense either, since perceived responsiveness of the user and actual OS performance are very distinct and separate metrics.