Comment Re:Is there wireless signal above 10,000 feet? (Score 2) 183
If you look at wireless signal strength maps like this http://www.datasync.com/~rsf1/cell-air.htm you will see there are gaps in vertical coverage - where there's no signal. So I don't see how even any special equipment in planes can work with such low signal levels. (The old airfones used a different communication connection)