Here are three of the most popular brands of satellite phones...

Inmarsat was one of the first in the satellite phone field. They have a satellite phone communication network that provides coverage to over 95% of the planet. You also get access to international telephone, fax, and data networks.

Iridium (which falls under Motorola) has over 50 satellites, which ensures that you can communicate from anywhere on Earth. Like Inmarsat, Iridium is one of the most popular satellite phone choices.

GlobalStar satellite phones are valued for their ability to switch between satellite phone networks and cellular networks. Globalstar also offers high speed data and fax features.