I don't know how any of you guys can hear a damn thing from a mobile phone given the cacophany from the engine in the average light aircraft, nor for that matter, how the person at the other end can make out what you are saying either.
Indeed, though there are headset adapters, and also bluetooth-capable aviation headsets (Zulu, Bose A20).
But the real issue is that the phone doesn't usually work above about 1000-2000ft.
Occassionally one can send a text message higher than that, and one often receives them much higher (it is normal to find "welcome to xxxx" messages from Belgium, Germany, Austria, Italy, Slovenia, Croatia upon landing following a flight mostly at FL140+). But one can't rely on it.
A
satphone is the way to do texts, but then I find a lot of terrestrial networks do not receive them... However one can do short emails with it, which are more reliable. Its best use is for tafs/metars for various airports.