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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →AST SpaceMobile aims to let an ordinary, unmodified smartphone connect to a satellite when it is outside terrestrial cellular coverage. Its BlueBird satellites act as cellular access points in orbit, using large steerable antennas and mobile-operator spectrum to link the phone with a carrier network. The system has been demonstrated in tests, but AST’s Form 10-Q for the quarter ended June 30, 2026, said its SpaceMobile Service had not launched.
How does AST SpaceMobile connect a phone to a satellite?
The short version is: phone to satellite, then through the satellite and carrier network to the service the subscriber is using. AST describes BlueBird as an added cellular coverage layer for mobile operators, not a replacement for the entire ground network. A satellite can provide a radio link where a carrier’s terrestrial towers do not reach, subject to the satellite’s coverage, spectrum permissions, and network deployment.
1. The phone sends and receives a cellular signal
AST’s design is intended to work with an existing, everyday smartphone, without a separate satellite handset, dish, special app, or software update. The phone communicates over radio spectrum allocated for the service. Which frequencies can be used depends on the market, the carrier’s spectrum rights, and applicable approvals.
2. A BlueBird satellite forms a coverage cell
Rather than relying on a small antenna pointed at one device, a BlueBird uses a large phased-array antenna. Its elements work together to form and steer radio beams toward areas on Earth. Those illuminated areas function as cellular coverage cells. Because the satellite is moving and the link is between an orbiting platform and a phone on the ground, this is not identical to connecting to a fixed tower.
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3. The signal is processed and routed with the carrier network
AST says its system integrates with mobile network operators (MNOs), which provide licensed spectrum and network connections in their markets. The satellite processes the radio signal and helps route it through the operator’s network. AST identifies its custom AST5000 application-specific integrated circuit (ASIC) as part of the processing and beam-steering design for next-generation satellites.
A useful analogy is a cell site in orbit: it can extend a carrier’s coverage into an area without a tower, but its beams, motion, capacity, and regulatory permissions differ from those of ground infrastructure. It does not mean every place has continuous satellite coverage.
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What equipment and performance figures has AST reported?
The figures below come from AST’s own technical materials and its Form 10-Q for the quarter ended June 30, 2026. They describe different things: antenna area, a test result, and company-stated next-generation capabilities. They should not be treated as equivalent measures or as guaranteed service for subscribers.
| Figure | What it describes | Qualification |
|---|---|---|
| 693 square feet | Phased-array antenna on BlueBirds 1–5 | AST company network description, accessed in 2026; this is the first-generation commercial BlueBird array. |
| Approximately 2,400 square feet | Maximum stated Block 2 phased-array size | AST Form 10-Q for the quarter ended June 30, 2026; the filing describes it as more than three times the Block 1 array. |
| 98.9 Mbps | Peak data speed directly to a standard, unmodified smartphone | AST-reported Block 1 BlueBird test result in the June 30, 2026 Form 10-Q; it is not a customer speed promise. |
| Over 150 Mbps per coverage cell; more than 2,000 cells | Next-generation capability claims | AST technical and product pages accessed in 2026; these are company-stated capabilities, not the 98.9 Mbps Block 1 test. |
| Up to 10 GHz of processing bandwidth | Block 2 processing capability | AST product-page claim accessed in 2026; processing bandwidth is not the same as end-user throughput. |
AST attributes Block 2 capacity gains to the larger antenna aperture, precision beamforming, and the AST5000 chip. Its filing says the phased array is designed to form narrower, more focused coverage areas, reduce interference, and maximize capacity. These are descriptions of the system’s design and company claims, not independent measurements of routine customer performance.
What has been demonstrated, and what does that establish?
AST reports tests with BlueWalker 3 and BlueBird satellites using ordinary smartphones. Its listed milestones include an early voice call in April 2023, a video call in June 2023, a 5G call in September 2023, and tests with AT&T and Verizon in the United States in 2025. In July 2025, AST reported a VoLTE call and SMS using AT&T spectrum and core network; in October 2025, it reported calls, data, and video streaming with Bell in Canada.
These tests show that voice, video, messaging, and data links have been demonstrated under test conditions. They do not by themselves establish retail availability, service quality everywhere, continuous coverage, or a particular subscriber speed. AST has also named partners including Vodafone in Europe, Rakuten in Japan, and stc in Saudi Arabia and regional markets; a partnership announcement or technical test is not the same as a consumer launch in that market.
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How is direct-to-cell different from towers and satellite phones?
| Type of connection | Device used | How the network connection works | Coverage and availability |
|---|---|---|---|
| Terrestrial cellular | Ordinary mobile phone | Phone connects to a ground tower and the carrier network. | Depends on the carrier’s tower coverage. |
| AST SpaceMobile direct-to-cell design | Intended to use an ordinary, unmodified smartphone | A BlueBird satellite supplies a cellular radio link; AST’s design uses partner-operator spectrum and integrates with carrier networks. | Intended to supplement tower coverage. The service was not launched according to AST’s June 30, 2026 Form 10-Q. |
| Conventional satellite phone or terminal | Dedicated satellite handset or terminal | Uses equipment designed for a satellite connection rather than the ordinary-phone approach AST describes. | Coverage and availability depend on the particular provider and service. |
The distinction matters when deciding whether to buy equipment: AST’s stated approach is to use the phone a subscriber already owns, not to require a satellite phone or dish. It also means the service depends on operator arrangements and local spectrum and regulatory conditions rather than being a universal standalone satellite plan.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is AST SpaceMobile available to consumers?
AST’s Form 10-Q for the quarter ended June 30, 2026, stated: “The SpaceMobile Service has not been launched and therefore has not yet generated any revenue.” The company’s second-quarter update described preparation for beta service in 2026, with scaled noncommercial use involving strategic operator partners. AST’s FAQ described an initial U.S. beta target with noncontinuous nationwide coverage.
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AST’s launch page reported BlueBird 11, 12, and 13 launched on August 5, 2026, after BlueBird 6 in December 2025 and BlueBirds 8–10 in June 2026. The same Form 10-Q reported that BlueBird 7 entered an orbit too low to sustain operation and was de-orbited. Satellite launches and planned beta activity are deployment milestones; they do not on their own establish a generally available retail service. Availability, beta participation, pricing, and launch timing can change, so the dates above identify what the cited company materials reported rather than guaranteeing the present status.
What determines whether the service can work in a particular place?
- Carrier arrangements: AST’s model relies on integration with mobile operators; the carrier partner determines consumer plans and pricing.
- Spectrum rights: AST says the system uses partner operators’ licensed frequencies alongside its own spectrum holdings. The bands and permissions available vary by market.
- Regulatory authorization: Approvals are market-specific. Authorization in one country does not establish permission to operate everywhere.
- Satellite and coverage deployment: Coverage depends on the satellites and beams available at a given time; planned or noncontinuous coverage is not equivalent to uninterrupted nationwide service.
For a consumer, the practical takeaway is that having a compatible ordinary phone is only one part of the equation. The operator, local approvals, spectrum, and service launch all have to line up before a satellite connection is an available option.
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