A Satellite Phone Primer
An introduction to satellite phones & what they do
If you need to communicate where or when regular telephone and internet services are unreliable or unavailable, satellite communications can help
In remote areas, satellite communications are an invaluable way to ensure reliable methods of communications are kept open. Even when in foreign countries with GSM coverage, the affordable call rates offered by satellite networks mean they are often cheaper to use than your GSM phone in roaming mode whilst abroad.
Working slightly differently from mobile phones, satellite communications depend on having a clear line of sight to the satellite in the sky. They work most effectively when used outside with as few obstructions (tall buildings, mountains, trees etc) as possible.