Phones have a clear indication of whether they are connected to 4G or not. What basis do you have to say that warfangle's signal strength is good in the buildings they spend the most time in?
Nose's point is that signal strength does not necessarily imply good Internet connectivity. Kinda like you can have great WiFi signal because you're sitting next to the router but unless the router is connected to a good ISP its still going to suck. Ie you can have 4G connectivity and it can still crawl if the backhaul sucks.