Global Mobile Satellite Services (GMSS) provide communication capabilities via satellites, enabling users to connect from virtually anywhere on Earth. These services are essential for remote areas where traditional cellular networks are unavailable. GMSS supports voice calls, data transmission, and internet access, making it valuable for industries like maritime, aviation, and emergency response. The technology behind GMSS involves a network of satellites orbiting the Earth, which relay signals to and from mobile devices. Companies like Inmarsat and Iridium are key players in this field, offering various plans and devices tailored to different user needs, ensuring reliable connectivity in challenging environments.