AST SpaceMobile, Inc. is a publicly traded satellite designer and manufacturer based in Midland, Texas, United States. The company is building the SpaceMobile satellite constellation, a space-based cellular broadband network designed to connect directly to standard, unmodified smartphones. The network is intended to deliver 4G and 5G broadband coverage globally, particularly in remote and underserved regions. Its BlueWalker 3 prototype and BlueBird commercial satellites are reported as among the largest commercial communications arrays in low Earth orbit after their respective launches and unfoldings in 2022 and 2024. The company's 2023 demonstrations included voice and data connections between standard smartphones and its BlueWalker 3 satellite.