Cellphone GPS

[Straz]

So I'm looking to simplify the number of electronics that I have in my life. I'm currently using a Garmin Forerunner 405 as my cyclocomputer and use it primarily to record my route. I want to replace it with a something that has a longer battery life (My 405 lasts barely 6 hours), can record my route (and download to my computer), displays basic info and isn't a cyclocomputer. I always carry a cell phone with me and am interested if others are using a cell phone as their primary cycling computer? If so, what model and apps are you using? How are you mounting it, if at all to your handlebars.

As a side note, I'm hoping this "device" will replace my mp3 player, camera and daily calender and thus eliminate 5 different power cords....

Tim