Alright so this has been bugging me, and I don't know where to go for an answer, because it's too specific for a Google search.
So here's the deal. I have an iPhone 6, Verizon, if that's important and I live up in the mountains in Maine. Reception is fine where I live. Now to get from my little town to any real civilization, there's a road I always take, the only road. Travel south on that road, and my reception is fine, no interruptions. Travel in the opposite direction, as if going back home, however, there's one spot about 15 miles from home where my reception goes dead for about two or three miles. Just dead. This happens every single time I travel home. In that spot, if I'm going south, I get reception. If I'm coming back home, I do not.
Never fails.
So my question is, why does my direction matter when receiving cellular service? Why do I get it when I go south, but lose it when I go north, in the same exact stretch of road?