There is an aeronautical kit for the Motorola 9500 series phones. Includes a cradle and interface to your ICS and an external antenna etc. Same as an in car kit really. They used to be around USD 3500 then the phone on top which can vary depending where you go. Iridium charge is USD 1.50 a minute from anywhere to anywhere else on the planet regardless of distance. The unit was made by Icarus Instruments in the US who may have moved on to be called Sky Connect. These newer units cost a little more but do offer more with automated flight following, data (low speed text etc) the text is very cheap and could be very useful .
Google - Icarus Sat Talk II or Sky Connect.