No zoom although there is an application for a digital zoom. Seems pointless since you can do that on the computer but I haven't tried it so maybe the app is better than I'm thinking.
I charge my iphone every day, either on the computer on in the car. It does use a lot of juice but I've got it on all the time, either for music, radio, internet, games or telephone. So many apps that I'm constantly doing one thing or another on it.