Man, I'm so confused then. How many "points" does it take to register? Here's a screenshot I took after just 4 minutes of map trip just inside my house. Previous trips where I actually ride around town yield hundreds. The Sensorly app's home page says I've collected 2776 measurements... Now only some of those include LTE points but still!
Anyways... Still getting very strong LTE signal right inside my house. A few minute drive in any direction switches me over to 3G. I guess I'm really lucky! It's about as fast as my wi-fi through AT&T U-Verse's DSL and 10 times as fast as my girlfriend's DSL.