Satellite phones, also known as satphones, are a type of mobile phone that can be used to make and receive calls and send text messages from anywhere on Earth, as long as the device has a clear view of the sky. These devices work by communicating with a network of satellites that are in orbit around the Earth, rather than relying on terrestrial cell towers like traditional mobile phones.

Satellite Phones

Satphones are often used in remote or rural areas, or in locations where there is no cellular coverage, as well as by people working in industries like oil and gas, mining, shipping, and wilderness guiding. They are also used by news organizations, the military, aid groups, and other organizations that operate in remote or disaster-stricken areas.

It's worth noting that even though satphones work anywhere, it does not mean that they will work everywhere. The device still needs a clear view of the sky, which might not be the case in some buildings, caves, underground areas, or heavy-canopy forests. It may also be affected by weather conditions. Moreover, the cost of a satellite phone call is generally higher than a traditional mobile phone call, and the cost of the device itself is also typically more expensive than traditional mobile phones.

In summary, a satellite phone works anywhere on earth, as long as the device has a clear view of the sky, which makes them a great option for people who need to communicate in remote or rural areas, but they are not as accessible or cost-effective as traditional mobile phones.