I'll definitely be going with a Mophie Juice Pack Air, because I've had one on my 3GS for the last 2 years and it's been remarkable. I can honestly get about an extra half day's worth of usage out of the phone with the juice pack air. And being that I have 3G always turned on, and am using it to stream and browse, as well as access apps all day long, I definitely need the extra boost.
I wonder if the juice pack air that is designed for the iPhone 4 will work for the 4S?
I wonder if the juice pack air that is designed for the iPhone 4 will work for the 4S?