I still would like to see who would actually use the mobile phone (in addition to me ...). The roaming cost will be huge and even I wouldn't use it for 2 hours. A short call and mostly text messages. I haven't seen many people to use satellite phone either even in Business class. I have been one of the rare people to use it. Actually, the last time I have seen someone using it was when UA flight got diverted from above of SAN to LAX and people started to call their families.
I know, I know, I am alone with this opinion.