Inmarsat GSPS (or Global Satellite Phone Service) provides phone calling, short messaging (SMS), email-to-text, and 2400bps data over much of the world excluding the polar caps. Other Inmarsat solutions such as BGAN are available if high speed internet is required.
The main benefit of GSPS over other mobile satellite services is the ability to make long duration calls without unexpected call drops. It has a personal assistance button to quickly transmit a short message with your latest GPS
fix to a preset emergency contact. A personal tracking feature is also handy, sending a breadcrumb trail of GPS location reports. This can be switched off using a button on the side of the phone.
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