First off, I am not an Android user, I don't have any android device. Reading through the thread about the new Samsung GS4, I realized that many people thought that the current iPhone retina display of 332ppi is sufficient and argued that any further increase in it is unnecessary as the eyes can't differentiate it anyway. In my opinion, this is not true, it may be extremely difficult to differentiate, but a ppi of 441 makes a huge different. This is even more significant for East Asian languages users such as Chinese, Japanese and Korean. Due to the way characters strokes are cramped in the space, a higher ppi can display it crispier and render it more beautifully. If Apple wants to have a stronghold in the Chinese market, it better increase the ppi. A higher ppi phone makes reading East Asian languages a lot more comfortable and satisfying.