ASTS AST SPACEMOBILE INC Investments/Divestments 8-K Filing 2023 - Successful Completion of Two-Way Voice Calls via Satellite AST SpaceMobile, Inc. announced the successful completion of two-way voice calls directly to smartphones using the BlueWalker 3 satellite, with ongoing testing for broadband connectivity and 4G LTE/5G waveforms.Get access to all SEC 8-K filings of the AST SPACEMOBILE INC