iPhone5 is taller because they copied Samsung. This intent to please users will only annoy their UX because iPhone not only stepped out of the leadership role but just made it more difficult for the users to tap the "back" button with the same hand they hold the device. Android phones have the back-button integrated on the bottom of the screen, that's why they can afford to have long screens. Therefore it's not possible to browse an iPhone5 app with just one hand.