Can I send inReach messages without internet access?

Using the Satellite Network

The Garmin inReach device uses both satellite and cellular networks to send messages. When you’re in an area with no cellular coverage, it will automatically switch to the satellite network. This network allows you to send messages, including emails and SOS alerts, to other inReach users or to emergency services, even when you’re far from any cell towers.

Satellite Network Coverage

Garmin’s satellite network is provided through a partnership with Globalstar. This network has a global reach, but the quality and availability of signals can vary depending on your location. In general, you can expect to get a signal from the satellite network in areas with clear line-of-sight to the horizon, such as from a mountain or a body of water. The inReach device can transmit signals from as low as 3,000 feet above sea level.

Sending Messages via Satellite

When you send a message via the satellite network, the inReach device will first attempt to send it to the nearest satellite, which is about 14,000 kilometers (8,700 miles) away. The message is then relayed back to Earth through a network of ground stations. The entire process can take anywhere from a few minutes to several hours, depending on your location and the strength of the signal. The inReach device will display a message indicating when the message has been sent successfully.