{"id":47499,"date":"2026-07-27T15:10:09","date_gmt":"2026-07-27T14:10:09","guid":{"rendered":"https:\/\/www.ispreview.co.uk\/?p=47499"},"modified":"2026-07-27T15:14:17","modified_gmt":"2026-07-27T14:14:17","slug":"amazon-leo-prep-new-constellation-of-5105-satellites-for-global-5g-mobile","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2026\/07\/amazon-leo-prep-new-constellation-of-5105-satellites-for-global-5g-mobile.html","title":{"rendered":"Amazon Leo Prep New Constellation of 5,105 Satellites for Global 5G Mobile"},"content":{"rendered":"

The Amazon Leo<\/a> (formerly Project Kuiper) service, which is building a new mega constellation of ultrafast broadband satellites in Low Earth Orbit<\/strong> (LEO) for the UK and globally, has revealed plans to launch a “new constellation<\/em>” of up to 5,105 satellites to connect compatible 4G<\/a> and 5G<\/a> mobile devices on the ground directly from space (Direct-to-Device<\/strong>).<\/p>\n

Until now all the focus has been on Amazon<\/a>’s plans for a broadband service, which will be available to homes, businesses and the public sector. This is currently still in its commercial beta phase and will start to launch properly through 2026 and 2027. Amazon Leo<\/a> currently has approval to deploy and operate their own initial constellation of 3,236 LEO<\/strong> broadband satellites (altitudes of between 590km to 630km). A total of nearly c.400 Kuiper satellites<\/a> have already been placed into orbit (they need at least 500 for basic global coverage) and many more are due to follow.<\/p>\n

NOTE:<\/strong> The space-based network is expected to cost up to around $20bn (\u00a314.9bn) to deliver, using a mix of rockets from ULA, Arianespace, Blue Origin and even SpaceX, by around 2030\/31.<\/div>\n

However, Amazon<\/a> has made no secret of their desire to launch a satellite<\/a>-based mobile service too (similar to Starlink<\/a>’s Direct to Cell<\/strong><\/a> product – as already used by O2<\/a> in the UK), which is one of the key reasons why they recently spent $11bn to gobble Globalstar (here<\/a>). The move gave Amazon<\/a> access to Globalstar\u2019s existing satellites, radio frequency spectrum, and operational expertise, which will in turn support their plans for adding Direct-to-Device<\/strong> (D2D) mobile services.<\/p>\n

The big announcement today is that Amazon Leo has officially filed with the Federal Communications Commission (FCC) in the USA to deploy up to 5,105 new satellites designed to use Globalstar\u2019s spectrum to bring voice, data (mobile broadband), messaging, and emergency services directly to mobile devices on the ground. Deployment for this is tentatively being set to start sometime in 2028<\/strong>.<\/p>\n

The new D2D system will operate alongside Leo\u2019s first and second-generation satellite<\/a> broadband systems\u2014as well as Globalstar\u2019s HIBLEO and C-3 satellite<\/a> constellations\u2014extending Leo satellite connectivity directly to compatible mobile devices. The system is “designed to reach any compatible mobile device<\/em>” – including any of the growing number of Smartphones from major manufacturers that have satellite-capable chipsets built in.<\/p>\n

Amazon Leo has already announced an agreement with Apple to power satellite services for supported iPhone and Apple Watch models\u2014including Emergency SOS via satellite, Messages, Find My, and Roadside Assistance via satellite\u2014and to collaborate with Apple on future satellite services using the expanded network. Amazon Leo has already announced partnerships with telecom operators like Vodafone<\/a><\/span>, DirecTV<\/span>, Herotel<\/span>, and Australia\u2019s National Broadband Network<\/span>, and more will follow.<\/span><\/p>\n

AMAZON LEO – How will the D2D network operate?<\/strong><\/p>\n

Leo will distribute its D2D satellites across five orbital shells, each optimized to reach different parts of the planet. The three mid-latitude shells provide dense coverage across heavily populated regions, while the higher-inclination shells extend service toward polar areas.<\/p>\n

Here\u2019s how the five orbital shells break down:<\/p>\n

Mid-latitude coverage:<\/p>\n

\u2022 Shell 1: 580 km altitude, 55.7\u00b0 inclination
\n\u2022 Shell 2: 560 km altitude, 58.2\u00b0 inclination
\n\u2022 Shell 3: 510 km altitude, 56.3\u00b0 inclination<\/p>\n

High-latitude coverage:<\/p>\n

\u2022 Shell 4: 570 km altitude, 73\u00b0 inclination<\/p>\n

Near-polar coverage:<\/p>\n

\u2022 Shell 5: 540 km altitude, 84\u00b0 inclination<\/p>\n

The satellites will communicate with mobile devices using dedicated radio frequencies (L-band and S-band spectrum links). Connections between the satellites and Amazon’s ground stations will use separate high-capacity radio links (Ka-band and V-band spectrum) that carry aggregated traffic between the satellite network and the internet, much like a backhaul connection for a cell tower.<\/p>\n

Unlike conventional satellites that simply relay signals to the ground (known in the industry as \u201cbent pipe\u201d satellites), Leo\u2019s D2D satellites will process the signals in orbit before relaying them to improve performance. Also, Leo\u2019s D2D satellites will be equipped with optical inter-satellite links\u2014laser connections between the satellites in orbit\u2014to support intelligent traffic routing across the constellation.<\/p>\n

The satellites will use digital beamforming and beam-hopping to direct concentrated signals precisely where and when they are needed. This maximizes coverage while minimizing wasted power and interference. Combined with the advanced signal-processing techniques described below, this approach will deliver higher spectrum efficiency than legacy systems:<\/p>\n

\u27a4 Tight adjacent-channel performance:<\/strong> The satellites will contain their signal energy within assigned frequency channels with minimal leakage into neighboring bands, protecting other operators while increasing usable capacity.<\/p>\n

\u27a4 Dual-polarization reception:<\/strong> The satellites will receive signals in two orientations simultaneously, increasing the information captured from the same frequency band and improving signal quality from low-power mobile devices.<\/p>\n

\u27a4 Adaptive modulation and coding:<\/strong> The system will continuously adjust how data is encoded based on real-time signal conditions, delivering higher data rates when conditions are favourable and maintaining reliable connections when they are not.<\/p>\n<\/blockquote>\n

The Leo D2D System will complement existing mobile networks by filling coverage gaps where terrestrial deployment is impractical, cost-prohibitive, or vulnerable to disruption. Once again this is intended to be directly competitive with Starlink<\/a>’s current mobile solution, which initially envisages working with existing mobile operators and regulators to deliver the service (likely as an add-on). But Starlink<\/a> is known to be exploring the idea of launching their own global mobile service, independent of existing mobile operators, which could be another potential option for Amazon to pursue too.<\/p>\n

At this stage we don’t yet know what kind of real-world performance such a network will deliver or what its caveats might be, but such details should follow in the future. Starlink’s own mobile service is currently quite app-specific and is only good at common but basic tasks, although they are expanding it and future satellites will be much faster too.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Amazon Leo (formerly Project Kuiper) service, which is building a new mega constellation of ultrafast broadband satellites in Low Earth Orbit (LEO) for the UK and globally, has revealed plans to launch a “new constellation” of up to 5,105 satellites to connect compatible 4G and 5G mobile devices on the ground directly from space […]<\/p>\n","protected":false},"author":1,"featured_media":43969,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[61,406,60,77],"class_list":["post-47499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uk_isp_news","tag-4g","tag-5g","tag-mobile-broadband","tag-satellite"],"share_on_mastodon":{"url":"https:\/\/mastodon.social\/@ispreview\/116992345068300361","error":""},"yoast_head":"\nAmazon Leo Prep New Constellation of 5,105 Satellites for Global 5G Mobile - ISPreview UK<\/title>\n<meta name=\"description\" content=\"The Amazon Leo (formerly Project Kuiper) service, which is building a new mega constellation of ultrafast broadband satellites in Low Earth Orbit (LEO)\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/2026\/07\/amazon-leo-prep-new-constellation-of-5105-satellites-for-global-5g-mobile.html\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Amazon Leo Prep New Constellation of 5,105 Satellites for Global 5G Mobile - 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