So, I thought I was getting pretty excellent battery life, and yesterday I applied the system update. Yesterday I took the phone off the charger at 6:30 a.m., streamed pandora for about 4 hours, goofed off on facebook over lunch, after work for an hour and a half at the bar browsing news and downloading apps off market and also applied the system update and showed off the phone. The battery was at about 40% when I hit the bar at 5:30, I pulled it and it reset to 70%, and when I got home 5 1/2 hours later it was at 30%. That's 16 hours of pretty decent use before charging again. Today, taking off charger at 6:30 a.m. the battery was down to 30% by 4 p.m., despite me not doing anything differently than I've done in the past days. In fact I didn't use the phone as much as yesterday. I pulled the battery, but it remained at 30% instead of jumping up to 70% like it'd done once before, so now I have it charging. That's a difference of 6 1/2 hours! It's almost like the more use the phone gets, the longer the battery lasts. I have full signal meter here all day long, so the phone isn't sucking up juice by having to boost signal.