It keeps going. I've literally not left my house today, where I have wi-fi. Granted I've used the phone more today than I have before (had it less than a week), but today alone accounts for 2/3 of my total G3 useage since I've had it. It's not like I'm in danger of running over my allotment or anything, but I'm wondering why I'm using so much 3G when I should have been on wi-fi all day. The only thing I can think of that I've changed is installing JuiceDefender.