AT&T and AST SpaceMobile Demonstrate Ground-to-Satellite Network Handoff

Key Points

• AT&T and AST SpaceMobile reported what they believe is the industry’s first successful handoff between a ground-based cellular network and a direct-to-device satellite network.
• The demonstration took place outside Granite Falls, Washington, on October 21, 2026.
• Ericsson and Nokia supplied supporting network and mobility technologies.
• The goal is to maintain connectivity as everyday smartphones move between terrestrial and satellite coverage.
• Real-world beta services are the expected next phase; the milestone does not mark a commercial launch.

AT&T (NYSE: T) and AST SpaceMobile (NASDAQ: ASTS) have demonstrated a handoff designed to keep a connection active as it moves between their ground-based and satellite networks.

The achievement builds on earlier voice calls, text messages and video calls through AST SpaceMobile’s BlueBird satellites. This demonstration addressed a different challenge: integrating the two networks so users can transition between them without manually managing the connection.

Service Continuity Is the Central Advance

Connecting a smartphone to a satellite is one part of the intended service. Preserving that connection when coverage shifts between ground and space is another.

The companies aim to make the transition happen behind the scenes, reducing the risk of dropped calls or interrupted connections. Satellite connectivity is intended to complement AT&T’s existing network in remote and hard-to-reach locations—not replace terrestrial coverage.

Four Companies Contribute Different Technologies

The collaboration combines distinct network capabilities:

• AT&T provides the ground-based wireless network and network integration.
• AST SpaceMobile provides the satellite network designed to connect directly with everyday smartphones.
• Ericsson supplies AT&T’s combined radio and core technology, including automation intended to optimize handoffs and reduce transition times.
• Nokia supplies radio-access technology and mobility software supporting AST SpaceMobile’s space-based network and service continuity.

The demonstration took place at 8:15 a.m. PT on October 21 outside Granite Falls. The supplied information does not provide detailed test results for throughput, connection reliability, or performance across different devices and conditions.

Beta Testing Remains Ahead

The next expected phase is beta service under real-world conditions, allowing the companies to refine performance before progressing toward commercial availability.

The intended applications include extending coverage for everyday users and adding communications resilience for first responders and essential workers. Those are service objectives rather than evidence of broadly available coverage today.

Investor Takeaway: Integration Progress, Not Yet Commercial Scale

For investors, the milestone demonstrates progress on a practical requirement for satellite connectivity: making it function as an extension of the mobile network rather than a separate experience.

However, no commercial launch date, pricing, subscriber forecast or revenue contribution was provided. The next meaningful checkpoints are beta performance, service availability and the ability to deliver reliable handoffs under varied real-world conditions.