Satellite Phone Coverage

Iridium: Everywhere

Iridium Communications Inc. is the only satellite communications company that offers truly global voice and data communications coverage. A technology innovator and market leader, Iridium is advancing the way global enterprises conduct daily mission-critical activities through reliable, near real-time, communications services.

Iridium’s 66 low-Earth orbiting (LEO) cross-linked satellites “the world’s largest commercial constellation” operate as a fully meshed network that is supported by multiple in-orbit spares.

Reaching over oceans, through airways and across the Polar Regions, Iridium solutions are ideally suited for industries such as maritime, aviation, government/military, emergency/humanitarian services, mining, forestry, oil and gas, heavy equipment, transportation and utilities. Iridium provides service to subscribers from the U.S. Department of Defense, as well as other civil and government agencies around the world. Iridium sells its products, solutions and services through a network of service providers and value-added dealers.



Satellite footprints form seven overlapping regions

The Inmarsat satellites transmit radio beams that form seven overlapping regions across the globe. Their combined footprint provides seamless worldwide communications coverage from latitudes -82 to +82 degrees, which excludes only the extreme Polar Regions.

Beams cover oceans and land masses

As Inmarsat was founded as a maritime communications operator, the first wholly-owned constellations − the Inmarsat-2 and Inmarsat-3 series − are located above the sea to form four ocean regions:

  • Atlantic Ocean Region West (AOR-W), at 54 degrees West
  • Atlantic Ocean Region East (AOR-E), at 15.5 degrees West
  • Indian Ocean Region (IOR), at 64 degrees East
  • Pacific Ocean Region (POR), at 178 degrees East.

Following the full deployment of the Inmarsat-4 (I-4) satellite constellation in 2009, a further three satellite regions were created over the Earth’s major land masses. They are:

  • I-4 Americas, at 98 degrees West
  • I-4 EMEA (Europe, Middle East and Africa), at 25 degrees East
  • I-4 Asia-Pacific, at 143.5 degrees East.