Call was executed using 850 MHz Band 5 spectrum licensed to AT&T, which has been supporting AST SpaceMobile’s testing efforts.
SOURCE: Urgent Communications
DATE: April 26, 2023
AST SpaceMobile today announced that it completed the first two-way voice calls via satellite-direct-to-phone connections during tests to unmodified cellular devices—a breakthrough claim in the nascent satellite-direct-to-phone arena, which previously has been limited to text-based applications.
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