wrote in message
oups.com...
Ok I am flying my plane at 12,000 feet and the phone might talk to
several towers, thats frowned upon. Now, I hike about 2 miles and climb
the Grand Teton mountian to almost 14,000 feet, use my phone and it's
ok. I am getting confused again. G

Well, a) you probably won't get very good phone reception at 12,000' AGL,
and b) cells are designed taking the terrain into account. Assuming you get
cell reception at the peak of Grand Teton Mt, it's because the cellular
network was designed with that location in mind, and specifically does not
have too many towers serving that location.