After turning off a bunch of stuff (Google Talk, Google backup, etc) I have had fantastic battery life - with light use I got a day to a day and a half easily running on 3G. On Sunday, I turned on 4G to see what difference it made and I still got about 20ish hours but turned it off as I really don't have a day to day need and battery life is more important to me. Today, my battery life is awful! Down to 35% within about 6 hrs! When I look at the battery stats I see a bar showing "Mobile Network Signal". Usually this bar is gold with a few spots of green, today it is almost all green but as far as I can tell, I haven't lost 3G as I've gotten mail, etc. normall all day. Does anybody know what this bar signifies?