For some reason a couple of months ago I went from getting a couple of days battery life from my phone to getting 24 hours or less. It wasn't gradual, it was like a switch was flipped. I'm using Juice Defender Free, so first of all I'm wondering if something there might have changed. Secondly, I'm wondering if buying the pro version might help. From looking at my battery stats, it looks like wi-fi is using a lot of power. I'm wondering if wi-fi is staying ative when my phone is sleeping and if so if that's my problem. I know JD Pro has the option of turning off wi-fi on sleep, but I'm wondering how well it works. Would it take a while to re-connect when activating the phone? does it "wake up" wi-fi occastionaly to do things like check for e-mail?