Technology Hellenic Police Use Mobile Phones to Coordinate After Tetra Radio System Failure in Attica by Anika Shah - Technology April 22, 2026 by Anika Shah - Technology April 22, 2026 The Hellenic Police confirmed that officers in Attica are using mobile phones to coordinate operations after the Tetra radio system at the GADA Operations Center went offline. The Tetra system … 0 FacebookTwitterPinterestEmail