I was at the Medina airpark the other day, and to my astonishment, was getting a 100% full-bars 4G LTE signal on my HTC Evo 4G LTE. Very fast connection! First time I've seen LTE in Ohio.
+1Bars aren't for your LTE they are for the phone side. Do not use the bars for lte signal strength. Use a app in the play store called signalcheck if you want pay for the pro version. Will bring up your signal strength for LTE and 3g data.