In July 2025, T-Mobile and SpaceX’s Starlink launched the first nationwide D2D messaging service available to all US carriers on any compatible smartphone. No specialized hardware, no satellite terminal – just standard smartphones connecting directly to low-earth orbit. Almost immediately, operators worldwide began scrambling to match the capability. For IT and network professionals, the question has shifted from whether D2D will matter to how fast you need to plan for it.
The answer, based on where the market sits right now: faster than most infrastructure roadmaps assume.
The Gap D2D Is Built to Fill
More than 80% of the world’s landmass and 95% of sea areas lie beyond the reach of ground-based cellular networks. The ITU puts the number of people still offline at roughly 2.6 billion as of end-2024 – about a third of the global population. In many of those areas, terrestrial infrastructure is simply too expensive to deploy commercially.
Traditional satellite services existed to fill these gaps, but required specialized, costly hardware. What’s changed is standardization. 3GPP’s non-terrestrial network (NTN) specifications – starting with Release 17 in 2022 and now into Release 19 – define how existing smartphones can connect directly to satellites using the same cellular protocols they already use. No antenna upgrades. No new devices. That’s the structural shift driving everything else.
What You Actually Get Today
The Wireless Infrastructure Association’s October 2025 white paper is the clearest available reality check. Current D2D performance sits below 1 Mbps download. Signals require line of sight to the satellite, which limits indoor coverage considerably. Each satellite beam covers hundreds of square miles, meaning bandwidth is shared across a large user base – capacity constraints are real.
T-Satellite, T-Mobile’s commercial service, launched at $10 per line per month, initially covering texting, and expanded to apps like WhatsApp and Google Maps by October 2025. Useful, clearly – but not a broadband substitute. AST SpaceMobile, backed by AT&T and Verizon, is building toward voice and data at roughly 4G LTE outdoor quality, targeting early 2026 for initial US service. That’s the realistic near-term ceiling, and indoors will be slower.
The WIA paper puts it plainly: D2D strengthens network reach and resilience but remains a complement – not a substitute – for terrestrial towers and small cells.
A Market That Isn’t Waiting
Constraints or not, the money is moving. Global smartphone D2D services will reach 411 million monthly active users and generate $11.99 billion by 2030, at 80.1% annual MAU growth and 49.4% annual revenue growth from 2026-2030. Digitimes estimates annual revenues could exceed $10 billion by 2030 if key constellations advance as planned.
Enterprise is driving near-term adoption more than consumers. Utilities, oil and gas, maritime logistics, and agriculture are already deploying D2D-enabled IoT for asset tracking and operational continuity in coverage-dead zones. Novaspace’s May 2025 report puts the satellite broadband addressable market at over $320 billion through 2033. The competitive field reflects this urgency:
- SpaceX / Starlink: Over 600 D2D-dedicated satellites in orbit by Q3 2025, with carrier partners including T-Mobile, Rogers, KDDI, and Salt.
- AST SpaceMobile: AT&T- and Verizon-backed, targeting a US commercial launch in early 2026; a Vodafone joint venture advancing in Europe.
- Skylo Technologies: Verizon partnership has been live since 2024, reaching 8 million activated devices globally by August 2025.
- Lynk Global: Commercial D2D SMS live with multiple operators; merged with Omnispace in October 2025 to consolidate spectrum and capability.
Europe is accelerating independently. Orange was set to become the first European operator to launch D2D commercially in late 2025. Virgin Media O2 signed with Starlink for UK rural coverage. The pattern is the same everywhere: operators treating satellite connectivity as a competitive differentiator, not a niche add-on.
| PRO TIP: Run a Coverage Gap Audit Before Evaluating Any D2D Vendor D2D’s value today is sharpest in defined scenarios – remote field operations, maritime routes, disaster recovery failover, and rural IoT asset tracking. Before engaging any satellite vendor, map exactly where your terrestrial coverage fails, by geography and business impact. If your primary gaps are urban or indoor, D2D is not the right tool yet; terrestrial small cells and Wi-Fi offload still perform better there. A gap audit tied to operational risk gives you a clear brief for vendor conversations and prevents over-investing in a solution that doesn’t match your actual exposure. |
The Standards Timeline Is the Real Trigger
The commercial launches get attention, but the progression of 3GPP standards determines long-term scale. Release 17 introduced NTN for handheld devices. Release 18 added new frequency bands. Release 19’s functional freeze was approved in September 2025, introducing regenerative NTN architecture – placing full base station functionality directly on satellites – plus inter-satellite links for better mobility. Release 20 will mark the start of the 6G NTN transition.
Standards-based D2D means chipset makers, handset manufacturers, and operators can all build to a common spec. That’s the mechanism for mainstream device integration – and why watching 3GPP milestones matters as much as watching SpaceX launch schedules. The US DoD allocated $134 million in its FY2025 budget for commercial satellite bandwidth, with SpaceX, Iridium, and Viasat as expected beneficiaries – adding government investment momentum to the commercial push.
If You’re a System Integrator or in IT, Here’s Your Move
If you’re a system integrator working with enterprise clients, start with the coverage gap inventory – not the satellite pitch deck. Identify where terrestrial failures create measurable operational risk, then match those specific gaps to what D2D can deliver today. Prioritize IoT and asset-tracking use cases; they are commercially proven right now. Evaluate NTN standards-compliant solutions from Skylo, Lynk Global, and AST SpaceMobile-based services, and get clear on which carrier partnerships align with your clients’ existing mobile contracts. Build D2D into resilience and redundancy frameworks now, even if commercial deployment is 12-18 months out.
If you’re in IT or network planning, D2D belongs in your multi-year connectivity strategy. Treat the 3GPP Release 19 rollout and AST SpaceMobile’s initial service launch as the planning triggers – those events expand what D2D can actually do. Review business continuity plans for single-mode terrestrial dependencies and start the conversation with your carrier reps about what D2D add-ons will look like on enterprise mobile agreements. Those conversations are already happening at the operator level.
D2D satellite won’t replace your terrestrial infrastructure. But as a resilience layer, a coverage extension for remote operations, and a failover for when towers go down, it’s moving from experimental to operational faster than most planning cycles have anticipated.
