What is your approximate battery life I'm curious? Does it last you all day without needing a charge?
Another thing that can drain the battery fast is a lot of web browsing. This is why the Epic has a separate brightness setting for the browser. The color white uses up a lot of power and the majority of web pages have white in their backgrounds.
I use my phone heavy like browsing and I have 3 emails polling every one minutes and there gmail polling too also AIM running in background too.
When I browse and I happen to be near WIFI I went ahead and connect to it for the speed cuz I don't live in 4G coverage yet, my town only have 3G
My battery lasted me about 9 hours or so around.
My gf was worse because she was doing more on her Epic like playing games on it and she a facebook freak so she got live facebook feed polling on it too lol so her was like 6 hours or so.
That to be expected for burden we put on our Epic, we are planning on checking to see if there some aftermarket batteries with higher mAH rating that could give us an extra hour or so on it.
But we both are happy with the Epic.
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Also, Facetime does not work over WiFi so unless you have a good signal it doesnt work very well. I work in an area where ATT has no 3G yet and the FaceTime app took a good 4 minutes to sync the video between two iPhone 4's. So in the end, while it is better, its also network dependent.
, but by the time next year new phone will be smoke EPIC or EVO that is for sure, maybe wait for 2.3-2.5 OS also 3.0 Android should be interesting.