Interesting map, but entirely fictional on US Rt2 between East Glacier and West Glacier for ATT. There is no ATT coverage for 60+ miles, yet the map suggests complete coverage. Correct for Verizon and T-Mobile.
Yah, just looking at the signal edges should tell you a couple of those maps are "fictional". The tmobile map at least looks like a signal propagation map in areas that are flat, where they have a tower the map is roughly a circle, and in cities/mountain areas there are dark spots where there is a hole despite being entirely surrounded by signal.
The other two maps look like BS to me, considering a couple years ago I was carrying two phones from differing carriers and driving around in unpopulated areas in the midwest and there were plenty of holes despite the advertised maps at the time showing perfect coverage in the areas in question.
The surprising thing is that the fcc is buying some of that crap and republishing it rather than asking for raw tower data (location/freq/antenna directions/power/etc) and doing the modeling themselves. Even if the modeling is pretty poor the results are likely better than the best case crap they are getting from att.
Check the corridor from San Antonio to El Paso along I-10. I regularly get zero service along that path for dozens of miles at various points.
And, it's not even the fault of towers--there is some weird "roaming" agreement in that area so Verizon doesn't want to carry the calls but still wants credit for that being "in coverage".
