I've noticed a lot of variation in reports of battery life on this phone. I know myself the first time I used the phone I only had 7 hours under heavy usage, but after the second time that went up to 14 hours. The third charge it's up to 20. I'm wondering if this is just a calibration issue out of the box, and it needs a few charges to figure out how long your battery really lasts. Anyone experimented with this and seen if the 10% is really 10% after 7 hours?