As we all know, the ability to turn off the 3G will be an option on the new iphone, and this will be helpful for saving battery life. My question is; is there a point to having 3G on when you are not browsing the internet? why would you need the faster network while talking. I'm not very tech savvy, but it seams pointless to drain the battery while not on the internet. Any clarification would be appreciated. thanks!