Well I don't officially have 4g in Indianapolis but there is a signal depending on where you are in Naptown. I was curious just how much of a difference there is between my 3g and 4g connection. Keep in mind that I am only able to get a couple bars when using the 4g and I was close to downtown. I'll let the picture speak for itself but the test @ 10:03 is using my 4g connection and the test @ 10:04 is using my trusty, not too mention much more dependable, 3g connection. Oh and by the way this screenshot was taken using the new feature w/ the update to my EVO 3d. God I love this phone. Feel free to post your own screenshots w/ a comparison in your town.
This is what I usually get with 3g but my 4g is a little lower then usual as you can see I have no bars of 4g but still getting over 6Mbs down. Usually around 7-8 Mbs though with one bar. 4g test is on the left and 3g is on the right obviously.