Inmarsat GSPS provides voice, SMS (texting), email-to-text and 2.4 kbps internet access. Inmarsat coverage is worldwide except for the polar caps. We recommend it for users operating between 50° N and 50° S latitude but not in mountainous terrain. A key safety feature of the IsatPhone 2 is the ability to leave a breadcrumb trail of GPS locations. For more information, please contact us.