I bought my iPhone last week with 2.1 already installed and it's had horrible battery life. First full charge and I barely made it to 3 hours of use with 5 hours of standby. I did a fresh restore and power cycled twice and now am seeing 3.5-4 hours of use with 12-14 hours standby by the time I'm at 20%. This sounds pretty low compared to a number of others out there. I'm not doing anything too hardcore with maybe 10 minutes of calls, a few texts, emails, light browsing, and music playing. 3G - on WiFi (no auto join) - on Location Services - on Bluetooth - off Gmail fetch account at 1 hour intervals Exchange push email, contacts, and calendar Brightness at 10-15% w/ auto on Does this qualify for an exchange from the Apple store? Will my battery improve after a few more weeks of use? It's disappointing when I have a phone that barely lasts a work day yet others here are squeezing 2-3 days of standby with similar usage patterns.