The Thuraya Satsleeve can be an option,if you have NO GSM signal in a particular area.
(ie. your mobile phone/smartphone will be useless if there is no GSM service.)
At present,your Iphone4/4s/ or Iphone5, will turn into a satellite phone,if you place these into
a Thuraya Satsleeve(of course with Thuraya SIM CARD) + the Satsleeve(with docked IPHONE) must
have a "line of sight" un-obstructed view of the sky/horizon, wherein the satsleeve antenna must see (at all times),the
Thuraya Satellite in the sky. These setup presently works in IPHONE4/4S/5/5C/5S and who knows,,
maybe these technology would be made available to other smartphones
(samsung/blackberry/HTC/NOKIA/SONY etc...)
Message was edited by: ece_guy76