Yes it is an area I'm in a lot. I own a home in the North Dallas area. Unfortunately I work in a South Dallas area so I rent down there.
Yes, I did a speed test while I was there. 7.10 D 3.03 U
So I'm out on the McKinney greens with my son's and low and behold I'm getting great 4G signals here. I guess north Texas can breath a sigh of relief you did not have to wait long.That would be Eldorado and Medical Center drive.