yes.
I guess that's why I'm not having the same issues some other people are having of drained batteries and always having to charge. I can go at least a couple of days of moderate use (a few phone calls, watch a video, listen to lots of music, google maps, etc.) without always having to charge (with WiFi always being on, screen brightness turned up, etc.)
My routine when I do charge is, I just plug it in for a couple of hours when I get home from work, then when I get the "Full Charge" symbol, I unplug and lay the iPhone by the bedside night stand (unplugged) to use as my alarm clock in the morning.