Why is reaching every corner of the phone such a big deal anyway? Speaking for myself, one of the biggest reasons I like large screens is that reading and viewing content is so much easier - I don't have to squint when I'm watching a video, or deal with awkward reflowing. Interface designers don't have to use the new real estate just because it's there, they can design touch areas that are well within reach, while using the new extra space for other visual elements.