A phone like this would be absolutely perfect in my world. Not as a daily phone or a phone at all but rather a bicycle computer with extended features. Shoving a 5-6-7 inch screen on the handlebar is borderline impossible and and anything but optimal. But something like this could be perfect: exercise tracking, music player, with some additional work you could hook it up to a camera mounted under the seat and have a mirror, which I find extremely useful. Ideally one or two buttons mounted somewhere around the shifters to easily switch between some pre-defined modes(tracking, camera, map, weather, etc.) and it could be absolutely perfect.