I carried my Droid X on the trail last year and will do it again this year. I listen to books. I can download new ones when there is a signal (often with Verizon). I don't keep my phone on so mommy can call. It is in airplane mode 95% of the time. I also use it as my camera, if it was off I would have to wait for the phone to boot up to take a picture. I carry two extra batteries almost never touch the last one unless I'm streaming music. I like my Droid because I can carry extra batteries. I also only carry a 6" recharging cable. Don't think Apple sells one that is that short. I love having one device that does it all. Why would I want to carry multiple chargers?