You may be planning to go on a wildlife safari in a protected park in Africa. Or you might want to go to the Australian outback and experience the wilderness firsthand. Or you may want to go on a trek through the Andes, where the high altitude and cold can freeze you solid. You might even want to brag that you're going to the top of Mount Everest and are about to plant your country's flag there! Now think: how are you going to call the people back home?
One solution might be e-mail instead of a phone call, but how will you be able to communicate using the Internet if you have no electricity, or are far away from any computer? You may say that you have a great cellular phone, but the signals for mobile phones do not cover the entire planet, and you may be in for a surprise when you switch on your cell, see that you have no signal bars, and find that your little device is nothing but a piece of metal out in the wilds. You might, however, also try a satellite phone.
A satellite phone operates by bouncing signals off a satellite, and sending them back to earth through a telephone or cellular network. This means that you can carry your satellite phone on your vacation and be sure that you can reach people on the other side of the globe, as long as you are within line of sight of a satellite. There are also devices that can help you get a satellite signal. For instance, some satellite service companies have antennas that allow you to pick up satellite signals if you are not sure where in the sky the satellite is.
Of course, there are disadvantages to using a satellite phone. For instance, you will need the presence of a satellite, as well as good weather conditions to carry your call. For more information, talk to your satellite phone service representative, and see if a satellite can serve you well on your next vacation.