Is 3G on a 4G capable phone any different than 3G on a normal 3G phone? Is 3G on a 4G capable phone meant to be a fail-over of some sort in case you travel out of the 4G realm or 4g tower is down? what are some average 3G speeds? How much battery do you save with your device using 3G? I know on average, moderate users on 4G phones in the Verizon lineup (stock batteries) get anywhere from 8-10 hours. Has anyone did a test to see how much using 3G v. 4G really affects their batteries? These are just a few things that come to my mind as i waffle back and forth between using a stock battery and an extended battery.