I have been testing my satellite phone while flying to Florida and back. I received reception everywhere I was in the sky. The phone cost me $1600 and $1.49 per minute. While this is not cheap, I do consider it essential. And it is really fun talking along the route I’m flying with my friends.
I connect it through a device I bought from Sporty’s right into my Bose noise canceling headset.
Hopefully, I won’t have to call my friends from the middle of the North Atlantic floating in a raft to tell them I might be late for dinner