A firm in the USA called Safety Cell does headset
adaptors for popular phones. I bought the Nokia one some years ago; it worked fine but I never used it for real because I find GSM barely works above 1000-2000ft (with some amazing exceptions like being able to get continuous 9.6k internet connection over France at FL80 once) and a text message is much better (which tends to work, eventually, anywhere in the first few thousand feet).
GPRS/3G is even worse.
In an aircraft that does not have FM-immune systems, it is just plain stupid
You ought to look up the frequencies for (a) VHF and (b) GSM
Can somebody find the reference in the ANO which says GSM must not be used airborne, on a private flight??
The reality is that it barely works. One can send texts in general but voice calls tend to be too unreliable even when low down. I suppose one could use it for calling up some anally retarded airport re PPR (one of those who tell you on the radio to land and make a phone call - I think we know who they are).
Perhaps with this rabid attention to the rules you should edit GASIL.
Love it
