AST SpaceMobile and Rakuten to Launch Direct-to-Cell Network in Japan

AST SpaceMobile is partnering with Rakuten Mobile to deploy a direct-to-cell satellite network across Japan, marking a major step in the race to eliminate cellular dead zones. The initiative allows standard smartphones to connect directly to satellites without requiring modified hardware or proprietary equipment.

The project will be structured as a 50/50 joint venture led by Rakuten, with a projected investment of approximately 150 billion yen—roughly $926 million to $1 billion—over the next three years. The network will utilize Rakuten's 700 MHz spectrum band to facilitate the connection between space-based assets and ground-level devices. The partners aim to launch limited services in 2026, with the goal of achieving full nationwide coverage by fiscal 2027.

The Direct-to-Cell Race

AST SpaceMobile is developing a space-based cellular broadband network designed to integrate seamlessly with existing mobile ecosystems. Unlike traditional satellite internet services that require a specialized dish or terminal, this technology treats the satellite as a "cell tower in space." Rakuten, a major player in the Japanese telecommunications market, has emerged as a key strategic partner in this global rollout, providing the necessary spectrum and local infrastructure to make the service viable in one of the world's most densely populated regions.

Industry Implications

Providing seamless cellular coverage via satellite without specialized user equipment is often described as the "holy grail" for the telecommunications industry. By removing the hardware barrier, AST SpaceMobile and Rakuten can potentially offer ubiquitous connectivity to any user with a standard LTE or 5G phone. This creates a significant competitive alternative to SpaceX's Starlink. While Starlink has traditionally relied on proprietary hardware for high-speed internet, SpaceX is also moving toward direct-to-cell partnerships, intensifying the competition for global satellite-to-phone dominance.

Market Reaction and Outlook

The announcement triggered a strong response from investors, with AST SpaceMobile (ASTS) stock jumping approximately 21%, recovering from a recent downward slide. Market analysts view the Japanese government's backing of the 700 MHz network as a critical validation of the technology's commercial viability. Observers will now be watching for the successful deployment of the initial satellite constellations required to meet the 2026 limited service deadline and the subsequent scaling to nationwide coverage by 2027.