I’m no MIHOP nutjob, but what you say is true so it begs the question: how were the victims of 911 able to make such calls from their respective planes? Over 10 years ago no less. I must admit that’s one question to which I’ve never heard a definitive answer.
Altitude, 911 flights had just taken off. Leave your cell phone on next time you fly and see when the signal drops off. But at 35,000 feet no cell phone signal will reach a ground tower unassisted.
Pentagon, they were WELL within cell tower limits. Probably same with tower planes. No mystery here.
I thought they used the phones provided on the planes.