I currently have a 4S on VZW with unlimited data and am thinking of switching to ATT to get on a family plan. I will be able to take over someone else's unlimited data plan on ATT. The major downside of ATT unlimited data is that they throttle back your data speeds after you reach 3GB. I have never come close to that with my VZW 3G connection, though I'm concerned that with 4G I may really need more than 3GB. What does it take to hit 3GB of bandwidth? Is that really a lot of data? Thanks.