I recently got an el-cheapo blackberry knock-off. To further prevent a relapse into my blackberry addiction, I've stayed away from smart phones and apps. I have downloaded a gps program though.

In terms of keeping phones charged, I used to carry a spare charged battery but haven't got one for my new phone yet. I've been thinking about getting one of those AA/AAA powered cel phone chargers for a back-up when I'm off-roading.