Just drove through Alvin, TX with great 4G signal until I reached Bypass 35@FM528, and I dropped to 3G as I headed to Friendswood. At the Friendswood city limit, I lost service altogether and started roaming until I got about half a mile from FM528@FM518 where I re-aquired 4G. Once I turned down FM518 I dropped to 3G at the Friendswood/League City line. I maintained 3G all the way down FM518, then down I-45 south to FM646 all through the Victory Lakes area. I then drove down FM517 back to alvin and stayed 3G until I hit Bypass 35 where I reaquired 4G. I was cycling to Airplane mode and back along the way when it was safe to do so to make sure the 4G aquisition attempt was being made. It seems interesting to me that they chose to complete an area such as Alvin with 25k people vs. an area like League City which resides along an interstate corridor and has a population of 80-100k. Don't get me wrong, I am very pleased that I have 4G, just curious of Sprint's strategy.