If you think about it, the whole concept of a stratellite cell phone tower in the sky is bogus if one remembers that the reason cell phones work is because the antennae are low to the ground.
Each tower intentionally serves only a small geographical area, or cell, with a given frequency set. The cells are conceptualized as hexagons and combine to form honeycombs across the landscape. In this way a maximum of seven cells can touch in a given cluster and so require seven sets of frequencies to interact as discrete units without interfering with each other. An eighth cell touching one of the six surrounding cells can theoretically use the same frequency set as the center cell in the original seven cell cluster since these two are far enough away from each other and low enough in altitude for the needed signal power roll off. In this way data can fly across the network while utilizing a very small number of frequencies. As your cell phone moves from cell to cell it passes itself along by hopping amongst the frequencies.
The cell phone system is defeated by high altitude cell antennae because now one frequency set can reach thousands of cells on the same frequency set, creating chaos. Any high altitude system really must be its own stand alone data feed on its own unique frequencies, to be sorted out and fed into other systems on the ground. It could never be a literal cell phone tower in the sky.
