Checking for Messages
When you send a message, your device listens for replies for 10 minutes. The device also checks for new messages every hour. When you are using the inReach® tracking feature, your device automatically checks for messages at your tracking interval.
You can force a check for messages by manually checking for messages, sending a message, or sending a track point. During a check, your device connects to satellites and receives messages waiting to be sent to your device.