I recently purchased an iPhone 5 and extended my contract with AT&T. The new iPhone is amazing and blazingly fast. Despite the map issue, I'm happy with the device. It's my first LTE phone and I was truly impressed with the 35mbps down I received during a speed test. After a few days of use I noticed severely slow Internet speeds. After running additional speed tests I'm currently receiving 0.23mbps or EDGE network like data speeds. I called AT&T and the representative reviewed my account and found a "feature" that slows down my unlimited data. She transferred me to the department that deals with this issue and that rep advised me that I went over the 5gb limit and I'm throttled until the next billing cycle. I escalated the call and the manager tells me that "we offer you an unlimited data plan but the speed is not guaranteed." I take it that his statement was AT&T's way of justifying the throttling. So, it's official. AT&T is throttling grandfathered unlimited data plans after 5gbs.