So I'm just curious if anyone else is seeing this. I understand wi-fi sleeps after 15 minutes of inactivity, but I guess I assumed mobile networking would always stay on. What I'm seeing is, if I leave my phone alone for a little while, as soon as I wake it up, the 3G symbol is not displayed. A second or two later it will show up, and then it will sync. This behavior makes it so that my Gmail push is not as instantaneous as it would be if the 3G always stayed active. I believe (although I'm not positive), that the phone must wake 3G every once in awhile to get e-mails though, although it might just wake up when i get a text or phone call. I don't see this as a major problem, especially if it's helping me save battery life, but I am curious if this is due to a setting, or if it's just the way the phone works.