I was surprised that this worked as well as it did... maybe some of you nerds can figure out how this works. Give it a try, only takes a few mins. Just be sure you were grandfathered into the unlimited AT&T plan... I'm sure it's a data hog.

Speed Up iPhone Data Speeds on Sprint and AT&T with This Hacked Update

[VIDEO]http://www.youtube.com/watch?v=2zX2YAXmI-E]How To Boost AT&T 4G LTE Speeds On iPhone 5 & iPad 4/3/Mini Hack- NO Jailbreak Required! - YouTube[/VIDEO]