PARIS — Startup satellite-to-unmodified smartphone broadband service provider AST SpaceMobile said the company’s in-orbit BlueWalker 3 satellite has shown signal strength “sufficient to support 4G and 5G data speeds” and that a full test program demonstrating the capacity is imminent.
AST announced in April that it had successful established a two-way voice call using AT&T spectrum with an off-the-shelf Samsung Galaxy phone and other devices, giving the company confidence that its design choices were on target.
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