When it comes to satellite communications, choosing the right network can make a world of difference. Whether you're heading off-grid for an expedition, managing remote assets, or supporting field operations, understanding the differences between Iridium, Inmarsat, and Globalstar is key to finding the best solution for your needs.
At GTC, we offer equipment and airtime across all major satellite networks, so here’s a clear, side-by-side comparison to help you make the right choice.
Coverage
Iridium
Truly global coverage
Iridium operates a constellation of 66 low Earth orbit (LEO) satellites, providing pole-to-pole coverage. It’s the only network that covers the entire planet, including the polar regions, open oceans, and remote deserts.
Inmarsat
Near-global coverage
Inmarsat uses a small number of high Earth orbit (GEO) satellites, offering reliable service across most of the globe, excluding the extreme polar regions. Its strength lies in strong regional beams with high reliability in mid-latitudes.
Globalstar
Regional coverage
Globalstar provides coverage across North America, parts of South America, Europe, and limited areas in Africa and Asia. While not global, it’s a cost-effective option for users who operate within its coverage footprint.
Key Products by Network
Iridium
- Iridium GO! exec: Portable Wi-Fi hotspot for voice and apps over the Iridium Certus network
- Iridium 9555 and 9575 Extreme: Rugged satellite phones with global voice, SMS, and emergency SOS features
- Iridium Certus terminals: High-speed L-band data terminals for land, sea, and air applications
Inmarsat
- IsatPhone 2: Reliable satellite phone with long battery life and GPS tracking
- BGAN terminals: Compact terminals for broadband internet, VoIP, and remote workstations
- FleetBroadband and Fleet One: Marine satellite terminals for global voice and data connectivity
Globalstar
- SPOT Gen4: One-way GPS tracker with SOS functionality for personal safety in remote areas.
- SPOT X: Two-way satellite messenger with standalone messaging and built-in SOS.
- SPOT Trace: Satellite-powered tracker that monitors asset movement and sends location updates.
Best-Use Applications
Iridium
Best for global travellers, polar expeditions, and critical communications anywhere in the world.
- Aviation tracking
- Maritime operations
- Military & government
- Adventure travel
- Remote workforce safety
Inmarsat
Ideal for high-speed data users and commercial operations outside the polar regions.
- Media broadcasting
- Oil & gas and mining operations
- NGO and emergency response
- Remote offices
- Maritime vessels
Globalstar
Great for recreational users, lone workers, and businesses operating in supported regions.
- Outdoor recreation
- Vehicle and asset tracking
- Lone worker safety
- Small-scale remote communication
- Affordable satellite messaging
Which Network is Right for You?
| Feature | Iridium | Inmarsat | Globalstar |
|---|---|---|---|
| Coverage | Global | Near-global | Regional |
| Best For | Remote expeditions, aviation, critical comms | High-data users, maritime, NGOs | Recreational use, tracking, budget options |
| Voice & SMS | Yes | Yes | Yes |
| Broadband Data | Yes (Certus) | Yes (BGAN, GX) | Limited |
| SOS/Emergency Support | Yes (GEOS with devices) | Yes (GEOS with IsatPhone 2) | Yes (SPOT devices) |
Need Help Choosing?
Whether you need a global voice plan, a maritime data solution, or a simple emergency tracker, our team at GTC can help you find the right product and airtime plan to match your needs and location.
Get in touch with us for expert advice or shop satellite phones and trackers now ➜
