Does the SPOT Satellite GPS Messenger require a phone or cellular service to work?

No, the SPOT Satellite GPS Messenger does not require a phone or cellular service to function. It operates via satellite communication, allowing it to work in remote areas where phone signals may not be available. The device uses the Globalstar satellite network to send location updates, messages, and emergency SOS signals to the SPOT International Emergency Coordination Center. This means that even in areas without cellular coverage, users can still use the device for tracking their location, sending predefined messages to contacts, and requesting help in emergencies. The SPOT Satellite GPS Messenger offers a reliable and independent communication solution for outdoor enthusiasts, travelers, and adventurers in all types of remote locations.