Ok, sorry it took so long to get back. The first time I got on 4g I was at Rivers Road and Hwy 92 in north Fayette county. The signal was on and off though. Then I was at Hwy 138 and Hwy 314 ( showing in Riverdale) in which I was able to stay connected for the entire 30 minutes I was sitting there. I tried a speed test but it keep saying "could not connect to service" however my phone did have really fast speeds loading web pages and apps. Since I have had an EVO 3d and now this LTE I have only been able to use either 3g or WiFi because I am just outside the Atlanta old 4g area, so I could tell that my speeds last night were greatly enhanced when it showed I was connected to 4g. One thing though, I checked my 4g settings and it only showed connected to "Idnis" or something to that effect. It did not show anything else like service provider or anything else, thought that was weird.
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