Forget what you thought you knew about satellite phones. While market attention remains fixed on artificial intelligence and quantum computing, a Texas-based company is making significant strides in its mission to revolutionize global internet access.

AST SpaceMobile (ASTS 3.87%) is on the verge of launching a commercial space-based cellular network that communicates directly with the smartphone in your pocket. After a volatile journey since its 2021 public debut, a series of critical developments in 2025 are bringing its ambitious vision into sharp focus. Here's what you need to know about this high-profile space stock.

Space-level view of cellular networks in the United States.

Image source: Getty Images.

A work in progress

AST SpaceMobile's first-quarter 2025 results underscored the capital demands of its ambitious mission, reporting a $63 million operating loss driven by heavy research and development (R&D) and manufacturing investments. But that figure now comes with important context.

In a pivotal breakthrough, the company secured a term sheet granting it long-term (80-plus years) access to 45 megahertz (MHz) of premium lower mid-band spectrum in North America through a settlement with Ligado. To fund the deal, AST also lined up $550 million in non-recourse financing.

This is a game-changing development. It locks in a vital strategic asset and injects substantial capital without shareholder dilution, resolving a major financial overhang and providing the company with a much clearer path forward.

Armed with this backing, AST's projections look increasingly credible: gateway equipment bookings of roughly $10 million per quarter and its first major revenue surge, estimated at $50 million to $75 million, in the second half of 2025. The transition from R&D to commercial deployment is no longer theoretical. It's in motion.

A market opportunity redefined

The global mobile connectivity market is a behemoth, generating over $135 billion in 2024. Yet, vast swathes of the planet and billions of people remain disconnected due to the economic and geographical limitations of terrestrial cell towers.

AST SpaceMobile aims to close this digital divide by transforming space into the ultimate cell tower. The company's next-generation Block 2 BlueBird satellites, featuring massive 2,400-square-foot communications arrays, are engineered to deliver up to 10 times the bandwidth of their predecessors.

This technological leap represents a fundamental reimagining of telecommunications infrastructure, offering solutions to challenges such as rural tower maintenance, the high cost of 5G densification, and network outages caused by natural disasters.

A deepening competitive moat

AST SpaceMobile's core advantage is its ability to deliver broadband directly to standard, unmodified smartphones -- eliminating the need for specialized terminals. Unlike traditional satellite internet providers, AST enables seamless roaming between terrestrial and space-based networks, creating a user experience that mirrors existing mobile coverage.

That advantage just became more defensible. The company's new long-term agreement for premium L-Band spectrum is a strategic coup, establishing a regulatory and resource barrier that few can match. Combined with a growing patent portfolio and spectrum-sharing deals with major carriers like AT&T and Verizon, AST is locking in a lead that's increasingly hard to close.

But urgency is rising. SpaceX's Starlink may be limited to text messaging in its Direct-to-Cell beta, yet it has already completed its first-generation satellite constellation -- proof of its rapid deployment capability. To rival AST's broadband ambitions, Starlink must still secure new spectrum access and enhance its hardware. However, its momentum highlights the importance of AST's early mover edge.

Other players are also closing in. Lynk Global, backed by SES, is advancing commercial operations, signaling that the race for direct-to-device dominance is well underway.

A valuation demanding a long-term view

As of mid-June 2025, AST SpaceMobile has surged 81% year to date, lifting its market cap above $12.5 billion. For a company just beginning to generate revenue, this valuation is undeniably priced for the future.

Traditional satellite operators, such as Iridium, offer limited benchmarks. A better comparison might be early-stage biotech or deep-tech firms -- businesses where value hinges on scalability and binary execution milestones. If AST succeeds in launching its commercial service and captures even a modest share of its massive addressable market, today's valuation may prove conservative.

The upcoming launch cadence is pivotal. AST plans five orbital launches over the next six to nine months, beginning in July 2025. The goal is to enable continuous cellular broadband coverage across the U.S., Europe, and Japan by 2026. Execution on that timeline could mark the company's transition from promise to reality, thereby justifying the market's confidence.

Risks remain, but so does the asymmetric upside

The bullish case for AST SpaceMobile has sharpened. With financing secured and spectrum access locked in, the investment thesis now rests squarely on operational execution.

The biggest risks are no longer financial -- they're physical. Satellite manufacturing is complex, and any launch failure could derail the rollout timeline. Regulatory headwinds may also emerge, particularly as astronomers raise concerns about light pollution and radio interference from growing satellite constellations.

Still, for investors with high risk tolerance and a long-term horizon, AST offers a rare asymmetric opportunity. The company has cleared major technical, strategic, and financial hurdles. Now comes the hardest part: executing at scale.

Success would mean not just delivering broadband from space, but reshaping the entire architecture of global connectivity. That's a transformation worth watching closely.