Satellite phone

Short description: Type of mobile phone

First generation late 1990s Iridium satellite phone Satellite phone (Inmarsat) in use in Nias, Indonesia, in April 2005 after the Nias–Simeulue earthquake

A satellite telephone, satellite phone or satphone is a type of mobile phone that connects to other phones or the telephone network by radio link through satellites orbiting the Earth instead of terrestrial cell sites, as cellphones do. Therefore, they can work in most geographic locations on the Earth's surface, as long as open sky and the line-of-sight between the phone and the satellite are provided. Depending on the architecture of a particular system, coverage may include the entire Earth or only specific regions. Satellite phones provide similar functionality to terrestrial mobile telephones; voice calling, text messaging, and low-bandwidth Internet access are supported through most systems. The advantage of a satellite phone is that it can be used in such regions where local terrestrial communication infrastructures, such as landline and cellular networks, are not available.

Satellite phones are popular on expeditions into remote locations where there is no reliable cellular service, such as recreational hiking, hunting, fishing, and boating trips, as well as for business purposes, such as mining locations and maritime shipping.[1] Satellite phones rarely get disrupted by natural disasters on Earth or human actions such as war, so they have proven to be dependable communication tools in emergency and humanitarian situations, when the local communications system have been compromised.[2]

The mobile equipment, also known as a terminal, varies widely. Early satellite phone handsets had a size and weight comparable to that of a late-1980s or early-1990s mobile phone, but usually with a large retractable antenna. More recent satellite phones are similar in size to a regular mobile phone while some prototype satellite phones have no distinguishable difference from an ordinary smartphone.[3][4]

A fixed installation, such as one used aboard a ship, may include large, rugged, rack-mounted electronics, and a steerable microwave antenna on the mast that automatically tracks the overhead satellites. Smaller installations using VoIP over a two-way satellite broadband service such as BGAN or VSAT bring the costs within the reach of leisure vessel owners. Internet service satellite phones have notoriously poor reception indoors, though it may be possible to get a consistent signal near a window or in the top floor of a building if the roof is sufficiently thin. The phones have connectors for external antennas that can be installed in vehicles and buildings. The systems also allow for the use of repeaters, much like terrestrial mobile phone systems.

In the early 2020s, various manufacturers began to integrate satellite messaging connectivity and satellite emergency services into conventional mobile phones for use in remote regions, where there is no reliable terrestrial network.

## Contents

* 1 Satellite network
* 1.1 Geostationary satellites
* 1.2 Low Earth orbit
* 1.2.1 Geotracking
* 2 Virtual country codes
* 3 Cost
* 3.1 Calling cost
* 4 One-way services
* 5 Legal restrictions
* 6 Security concerns
* 7 Use in disaster response
* 8 Integration into conventional mobile phones
* 9 See also
* 10 References
* 11 External links

## Satellite network

Satellite phone systems can be classified into two types: systems that use satellites in a high geostationary orbit, 35,786 kilometres (22,236 mi) above the Earth's surface, and systems that use satellites in low Earth orbit (LEO), 640 to 1,120 kilometers (400 to 700 miles) above the Earth.

### Geostationary satellites

Some satellite phones use satellites in geostationary orbit (GSO), which appear at a fixed position in the sky. These systems can maintain near-continuous global coverage with only three or four satellites, reducing the launch costs. The satellites used for these systems are very heavy (about 5000 kg) and expensive to build and launch. The satellites orbit at an altitude of 35,786 kilometres (22,236 mi) above the Earth's surface; a noticeable delay is present while making a phone call or using data services due to the large distance from users. The amount of bandwidth available on these systems is substantially higher than that of the low Earth orbit (LEO) systems; all three active systems provide portable satellite Internet using laptop-sized terminals with speeds ranging from 60 to 512 kbit per second (kbps).

Geostationary satellite phones can only be used at lower latitudes, generally between 70 degrees north of the equator and 70 degrees south of the equator. At higher latitudes the satellite appears at such a low angle in the sky that radio frequency interference from terrestrial sources in the same frequency bands can interfere with the signal.

Another disadvantage of geostationary satellite systems is that in many areas—even where a large amount of open sky is present—the line-of-sight between the phone and the satellite is broken by obstacles such as steep hills and forest. The user will need to find an area with line-of-sight before using the phone. This is not the case with LEO services: even if the signal is blocked by an obstacle, one can wait a few minutes until another satellite passes overhead, but a GSO satellite may drop a call when line of sight is lost.

* ACeS: This former Indonesia-based small regional operator provided voice and data services in East Asia, South Asia, and Southeast Asia using a single satellite. It ceased operations in 2014.
* Inmarsat: The oldest satellite phone operator, a British company founded in 1979. It originally provided large fixed installations for ships, but has recently entered the market of hand-held phones in a joint venture with ACeS. The company operates eleven satellites. Coverage is available on most of the Earth, except polar regions.
* Thuraya: Established in 1997, United Arab Emirates-based Thuraya's satellites provide coverage across Europe, Africa, the Middle East, Asia and Australia .
* MSAT / SkyTerra: An American satellite-phone company that uses equipment similar to Inmarsat, but plans to launch a service using hand-held devices in the Americas similar to Thuraya's.
* Terrestar: Satellite-phone system for North America.
* ICO Global Communications: An American satellite-phone company which has launched a single geosynchronous satellite, not yet active.

### Low Earth orbit

Satellite phones may utilize satellites in low Earth orbit (LEO). The advantages include the possibility of providing worldwide wireless coverage with no gaps. LEO satellites orbit the Earth in high-speed, low-altitude orbits with an orbital time of 70–100 minutes, an altitude of 640 to 1,120 kilometers (400 to 700 miles). Since the satellites are not geostationary, they move with respect to the ground. A given satellite is only in view of a phone for a short time, so the call must be "handed off" electronically to another satellite when one passes beyond the local horizon. Depending on the positions of both the satellite and terminal, a usable pass of an individual LEO satellite will typically last 4–15 minutes on average.[5] At least one satellite must have line-of-sight to every coverage area at all times to guarantee coverage; thus a constellation of satellites, typically 40 to 70, is required to maintain worldwide coverage.

* Globalstar: A network covering most of the world's landmass using 48 active satellites. However, many areas of the Earth's surface are left without coverage, since a satellite requires to be in range of an Earth station gateway. Satellites fly in an inclined orbit of 52 degrees, therefore polar regions cannot be covered. The network went into full commercial service in February 2000. A second-generation constellation consists of 24 low Earth orbiting (LEO) satellites. The launch of the second-generation constellation was completed on February 6, 2013.
* Iridium: A network operating 66 satellites in a polar orbit that claims to have coverage everywhere on Earth. Radio cross-links are used between satellites to relay data to the nearest satellite with a connection to an Earth station.[6] Commercial service started in November 1998 and fell into Chapter 11 bankruptcy in August 1999.[7] In 2001, service was re-established by Iridium Satellite LLC. Iridium NEXT, a second-generation constellation of the communications satellites, was completed on January 11, 2019.

Both systems, based in the United States , started in the late 1990s, but soon went into bankruptcy after failing to gain enough subscribers to fund launch costs. They are now operated by new owners who bought the assets for a fraction of their original cost and are now both planning to launch replacement constellations supporting higher bandwidth. Data speeds for current networks are between 2200 and 9600 bit/s using a satellite handset.

A third system was announced in 2022 when T-Mobile US and SpaceX announced a partnership to add satellite cellular service to Starlink second generation (Gen2) satellites that are to begin launching to orbit in late 2022. The service is aimed to provide dead-zone cell phone coverage across the US using existing midband PCS spectrum that T-Mobile owns.[8] Cell coverage will begin with messaging and expand to include voice and limited data services later, with testing to begin in 2023. With Starlink Gen2 satellites in low Earth orbit using existing PCS spectrum, T-Mobile plans to be able to connect ordinary mobile devices to satellites, unlike earlier satellite phones in the market which used specialized radios to connect to geosynchronous-orbit satellites, which have longer communications latencies.[9] T-Mobile has offered to extend the offering globally if cellular carriers in other countries wish to exchange roaming services via the T-Mobile partnership with SpaceX, with other carriers working with their regulators to enable midband communications landing rights on a country-by-country basis. Bandwidth will be limited to approximately 2 to 4 megabits per second spread across a very large cell coverage area, with thousands of voice calls or millions of text messages simultaneously in an area. The size of a single coverage area has not yet been specified.[9]

#### Geotracking

LEO systems have the ability to track a mobile unit's location using Doppler navigation from the satellite.[10] However, this method can be inaccurate by tens of kilometers. On some Iridium hardware the coordinates can be extracted using AT commands, while recent Globalstar handsets will display them on the screen.[11]

Most VSAT terminals can be reprogrammed in-field using AT-commands to bypass automatic acquisition of GPS coordinates and instead accept manually injected GPS coordinates.

## Virtual country codes

Satellite phones are usually issued with numbers in a special country calling code.

Inmarsat satellite phones are issued with codes +870. In the past, additional country codes were allocated to different satellites, but the codes +871 to +874 were phased out at the end of 2008 leaving Inmarsat users with the same country code, regardless of which satellite their terminal is registered with.[12]

Low Earth orbit systems including some of the defunct ones have been allocated number ranges in the International Telecommunication Union's Global Mobile Satellite System virtual country code +881. Iridium satellite phones are issued with codes +881 6 and +881 7. Globalstar, although allocated +881 8 and +881 9 use U.S. telephone numbers except for service resellers located in Brazil , which use the +881 range.

Small regional satellite phone networks are allocated numbers in the +882 code designated for "international networks" which is not used exclusively for satellite phone networks.

## Cost

Satellite phones on display

While it is possible to obtain used handsets for the Thuraya, Iridium, and Globalstar networks for approximately US$200, the newest handsets are quite expensive. The Iridium 9505A, released in 2001, sold in March 2010 for over $1,000.[13] Satellite phones are purpose-built for one particular network and cannot be switched to other networks. The price of handsets varies with network performance. If a satellite phone provider encounters trouble with its network, handset prices will fall, then increase once new satellites are launched. Similarly, handset prices will increase when calling rates are reduced.

Among the most expensive satellite phones are BGAN terminals, often costing several thousand dollars.[14][15] These phones provide about 0.5 Mbit/s Internet and voice communications. Satellite phones are sometimes subsidised by the provider if one signs a post-paid contract, but subsidies are usually only a few hundred dollars or less.

Since most satellite phones are built under license or the manufacturing of handsets is contracted out to OEMs, operators have a large influence over the selling price. Satellite networks operate under proprietary protocols, making it difficult for manufacturers to independently make handsets.

A startup is proposing the use of standard mobile phone technology in satellites to enable low bandwidth text message with satellites from cheap mobile phones.[16]

### Calling cost

A handheld satellite phone

The cost of making voice calls from a satellite phone varies from around $0.15 to $2 per minute, while calling them from landlines and regular mobile phones is more expensive. Costs for data transmissions (particularly broadband data) can be much higher. Rates from landlines and mobile phones range from $3 to $14 per minute with Iridium, Thuraya[17] and Inmarsat being some of the most expensive networks to call. The receiver of the call pays nothing, unless they are being called via a special reverse-charge service.

Calls between different satellite phone networks are often very expensive, with calling rates of up to $15 per minute.

Calls from satellite phones to landlines are usually around $0.80 to $1.50 per minute unless special offers are used. Such promotions are usually bound to a particular geographic area where traffic is low.

Most satellite phone networks have pre-paid plans, with vouchers ranging from $100 to $5,000.

## One-way services

Some satellite phone networks provide a one-way paging channel to alert users in poor coverage areas (such as indoors) of the incoming call. When the alert is received on the satellite phone it must be taken to an area with better coverage before the call can be accepted.

Globalstar provides a one-way data uplink service, typically used for asset tracking.

Iridium operates a one-way pager service as well as the call alert feature.

## Legal restrictions

In some countries, possession of a satellite phone is illegal.[18] Their signals will usually bypass local telecoms systems, hindering censorship and wiretapping attempts, which has led some intelligence agencies to believe that satellite phones aid terrorist activity.[19] It is also common for restrictions to be in place in countries with oppressive governments regimes as a way to both expose subversive agents within their country and maximize the control of the information that makes it past their borders.[20]

* China – Inmarsat became the first company permitted to sell satellite phones in 2016.[21] China Telecom began selling satellite phones in 2018[22] and six other satellite phone companies expressed their interest in entering the Chinese market shortly after.[23]
* Cuba[24][25]
* India – only Inmarsat-based satellite services are permitted within territories and areas under Indian jurisdiction. Importation and operation of all other satellite services, including Thuraya and Iridium, is illegal.[26] International shipping is obliged to comply with Indian Directorate-General of Shipping (DGS) Order No. 02 of 2012 which prohibits the unauthorised import and operation of Thuraya, Iridium and other such satellite phones in Indian waters. The legislation to this effect is Section 6 of Indian Wireless Act and Section 20 of Indian Telegraph Act. International Long Distance (ILD) licences and No Objection Certificates (NOC) issued by Indian Department of Telecommunications (DOT) are mandatory for satellite communication services on Indian territory.[27][28][29][30]
* Myanmar[31]
* North Korea[32] – The US Bureau of Diplomatic Security advises visitors that they have "no right to privacy in North Korea and should assume your communications are monitored"[33] which excludes the possibility of satellite phone technology.
* Russia – in 2012, new regulations governing the use of satellite phones inside Russia or its territories were developed with the stated aim of fighting terrorism by enabling the Russian government to intercept calls.[34] These regulations allow non-Russian visitors to register their SIM cards for use within Russian territory for up to six months.

## Security concerns

All modern satellite phone networks encrypt voice traffic to prevent eavesdropping. In 2012, a team of academic security researchers reverse-engineered the two major proprietary encryption algorithms in use.[35] One algorithm (used in GMR-1 phones) is a variant of the A5/2 algorithm used in GSM (used in common mobile phones), and both are vulnerable to cipher-text only attacks. The GMR-2 standard introduced a new encryption algorithm which the same research team also cryptanalysed successfully. Thus satellite phones need additional encrypting if used for high-security applications.

## Use in disaster response

Most mobile telephone networks operate close to capacity during normal times, and large spikes in call volumes caused by widespread emergencies often overload the systems when they are needed most. Examples reported in the media where this has occurred include the 1999 İzmit earthquake, the September 11 attacks, the 2006 Kiholo Bay earthquake, the 2003 Northeast blackouts, Hurricane Katrina,[36] the 2007 Minnesota bridge collapse, the 2010 Chile earthquake, and the 2010 Haiti earthquake. Reporters and journalists have also been using satellite phones to communicate and report on events in war zones such as Iraq.

Terrestrial cell antennas and networks can be damaged by natural disasters. Satellite telephony can avoid this problem and be useful during natural disasters. Satellite phone networks themselves are prone to congestion as satellites and spot beams cover a large area with relatively few voice channels.

## Integration into conventional mobile phones

In the early 2020s, manufacturers began to integrate satellite connectivity into smartphone devices for use in remote areas, out of the cellular network range.[37][38] The satellite-to-phone services use L band frequencies, which are compatible with most modern handsets.[39][40] However, due to the antenna limitations in the conventional phones, in the early stages of implementation satellite connectivity is limited to satellite messaging and satellite emergency services.[41][42]

In 2022, the Apple iPhone 14 started supporting sending emergency text messages via Globalstar satellites.[43] In 2023, the Apple iPhone 15 added satellite communication with roadside service in the United States.[44] In 2022, T-Mobile formed a partnership to use Starlink services via existing LTE spectrum, expected in late 2024.[45][46][47][48] In 2022, AST SpaceMobile started building a 3GPP standard-based cellular space network to allow existing, unmodified smartphones to connect to satellites in areas with coverage gaps.[49][50] In 2023, Qualcomm announced Snapdragon Satellite, the service that will allow supported cellphones, starting with Snapdragon 8 Gen 2 chipset, to send and receive text messages via 5G non-terrestrial networks (NTN).[51] In 2024, Iridium introduceed Project Stardust, a standard-based satellite-to-cellphone service supported via NB-IoT for 5G non-terrestrial networks, which will be utilized over Iridium's existing low-earth orbit satellites. Scheduled for launch in 2026, the service provides messaging, emergency communications and IoT for devices like cars, smartphones, tablets and related consumer applications.[52][53]

## See also

* Broadband Global Area Network (BGAN)
* Mobile-satellite service
* Satellite internet
* Telecommunications

## References

1. ↑ "Satellite phone: know the 5 sectors that use them the most" (in en-US). 2018-08-28. https://axessnet.com/en/satellite-phone-know-the-5-sectors-that-use-them-the-most/.
2. ↑ "Everything That You Need to Know About a Satellite Phone" (in en-US). https://www.satellitephonereview.com/everything-to-know-satellite-phone/.
3. ↑ "New Satellite Phone Runs Windows Mobile". Gearlog. http://www.gearlog.com/2008/04/new_satellite_phone_runs_windo.php.
4. ↑ "CTIA 2008: MSV Makes "Lost" Satellite Phone Real". Gearlog. http://gearlog.com/2008/04/ctia_2008_msv_makes_lost_satel.php.
5. ↑ "Delay/Disruption-Tolerant Network Testing Using a LEO Satellite". NASA. http://personal.ee.surrey.ac.uk/Personal/L.Wood/publications/uk-dmc-dtn-saratoga-testing-estc-2008.pdf.
6. ↑ "Iridium Communications Network and Satellite Coverage" (in en). https://www.roadpost.com/iridium-satellite-network.
7. ↑ Jaejoo Lim; Richard Klein; Jason Thatcher (2005). "Good technology, bad management: A case study of the satellite phone industry". Journal of Information Technology Management (Association of Management) XVI (2). ISSN 1042-1319. http://jitm.ubalt.edu/XVI-2/article5.pdf.
8. ↑ "T-Mobile is winning the race to 100MHz for midband 5G". Light Reading. 2021-11-15. https://www.lightreading.com/5g/t-mobile-is-winning-race-to-100mhz-for-midband-5g/a/d-id/773516.
9. ↑ 9.0 9.1 Berger, Eric (25 August 2022). "Forget 5G wireless, SpaceX and T-Mobile want to offer Zero-G coverage". Ars Technica. https://arstechnica.com/science/2022/08/forget-5g-wireless-spacex-and-t-mobile-want-to-offer-zero-g-coverage/.
10. ↑ "Archived copy". http://www.skyhelp.net/acrobat/Iridium SBD-FAQ 1-05.pdf. .
11. ↑ "Globalstar GSP-1700 manual". http://common.globalstar.com/doc/common/en/products/gsp1700_usermanual.pdf.
12. ↑ "Dialling codes – customer support". Inmarsat. http://www.inmarsat.com/Support/Calling/Dialling_codes.aspx.
13. ↑ "Satellite Phone Rentals and Sales". Allroadcommunications.com. http://www.allroadcommunications.com/products/.
14. ↑ "BlueCosmo BGAN Pricing". Bluecosmo.com. http://www.bluecosmo.com/mobile-satellite-internet-c-27.html.
15. ↑ "TS2 BGAN Pricing". http://satphones.eu/en/maritime-mobile/105-hughes-9201.html?c=3.
16. ↑ Harris, Mark (18 July 2019). "UbiquitiLink Wants To Turn Every Cellphone Into a Satellite Phone". IEEE Spectrum. https://spectrum.ieee.org/tech-talk/aerospace/satellites/ubiquitilinks-satellite-phone-service.
17. ↑ Thuraya – "Thuraya Satellite Phones"
18. ↑ Hossain, Moazzem (September 24, 2002). "Bangladesh jails Indian rebel chief". BBC News. http://news.bbc.co.uk/2/hi/south_asia/2278655.stm.
19. ↑ "How illegal sat phones are a big headache for intelligence agencies". Rediff. http://www.rediff.com/news/report/how-illegal-sat-phones-are-a-big-headache-for-intelligence-agencies/20140212.htm.
20. ↑ "Countries Where Satellite Phones Are Banned or Restricted" (in en-US). Blog - Telestial. 2017-11-08. https://blog.telestial.com/2017/11/08/countries-where-satellite-phones-banned-or-restricted/.
21. ↑ "Inmarsat given approval for IsatPhone 2 in China - Inmarsat". https://www.inmarsat.com/press-release/inmarsat-given-approval-isatphone-2-china/.
22. ↑ "China Telecom offers satellite phone services". http://www.chinadaily.com.cn/a/201805/17/WS5afd09b9a3103f6866ee8fc5.html.
23. ↑ "Satcom companies willing to partner with China to gain market access". June 29, 2018. https://spacenews.com/satcom-companies-willing-to-partner-with-china-to-gain-market-access/.
24. ↑ Administrator. "SHIPMENTS SHALL NOT CONTAIN". http://www.aduana.co.cu/index.php?option=com_content&view=article&id=15&Itemid=61&lang=en.
25. ↑ Alan Gross
26. ↑ "Subject: Illegal use of Satellite Phones in India – regarding". http://www.cbec.gov.in/customs/cs-circulars/cs-circulars10/circ37-2k10-cus.htm.
27. ↑ "Recommendation: Telecom Regulatory Authority of India". http://www.trai.gov.in/Content/ReDis/526_83.aspx.
28. ↑ "Restrictions on the use of Satellite Phone – Carrier Services – Licensing – Department of Telecommunications". http://www.dot.gov.in/carrier-services/restrictions-use-satellite-phone.
29. ↑ "INMARSAT – Carrier Services – Licensing – Department of Telecommunications". http://www.dot.gov.in/carrier-services/inmarsat.
30. ↑ "Archived copy". http://www.intmsearch.gov.in/bimonthly/2015/01 of 2015.pdf.
31. ↑ Dobie, Michael (September 28, 2007). "Junta tightens media screw". BBC News. http://news.bbc.co.uk/2/hi/asia-pacific/7016238.stm.
32. ↑ "North Korea Loosens Cell Phone Restrictions For Visiting Foreigners". 2016-03-04. https://www.huffingtonpost.com/2013/01/21/north-korea-cell-phone_n_2518006.html.
33. ↑ "Travel Warning: North Korea". https://www.osac.gov/pages/ContentReportDetails.aspx?cid=13765.
34. ↑ "From Russia with Love: New Regulations for Satellite Phones in Russia". http://www.outfittersatellite.com/blog/inmarsat-bgan/satellite-phones-russia-iridium.html.
35. ↑ Benedikt Driessen; Ralf Hund; Carsten Willems; Christof Paar; Thorsten Holz (2012). "Don't Trust Satellite Phones: A Security Analysis of Two Satphone Standards". 2012 IEEE Symposium on Security and Privacy. http://www.ieee-security.org/TC/SP2012/papers/4681a128.pdf. Retrieved 2013-04-28.
36. ↑ Prepare for the Hurricane Season with Satellite Phones – "Preparing for Hurricane Season with Satellite Phones"
37. ↑ Sheetz, Michael (October 23, 2022). "The major space players and diverging strategies in the race to connect your smartphone via satellites" (in en). https://www.cnbc.com/2022/10/23/space-race-to-connect-satellites-to-phones-with-apple-spacex-att.html.
38. ↑ Sweezy, Tim (2023-01-05). "Qualcomm's Snapdragon Satellite Will Connect The World In The Most Remote Areas Imaginable" (in en-us). https://hothardware.com/news/qualcomms-snapdragon-satellite-will-connect-world-in-remotest-areas-imaginable.
39. ↑ Nin, Catherine Sbeglia (2023-01-10). "Qualcomm announces Snapdragon Satellite for premium phones" (in en-US). https://www.rcrwireless.com/20230110/network-infrastructure/qualcomm-announces-snapdragon-satellite-for-premium-phones.
40. ↑ "T-Mobile to Expand Coverage With the Help of SpaceX's Starlink Satellites" (in en). https://www.pcmag.com/news/t-mobile-to-expand-coverage-with-the-help-of-spacexs-starlink-satellites.
41. ↑ "Qualcomm's Snapdragon Satellite will let Android phones text off the grid" (in en-US). January 5, 2023. https://www.engadget.com/qualcomm-snapdragon-satellite-messaging-android-211037007.html.
42. ↑ "The problems with Elon Musk's satellite phone plan" (in en). 2022-08-26. https://qz.com/the-problems-with-elon-musks-satellite-phone-plan-1849462167.
43. ↑ Kelly, Heather; Velazco, Chris (2022-11-16). "iPhone 14s now can send SOS via satellite. Use it carefully." (in en-US). Washington Post. ISSN 0190-8286. https://www.washingtonpost.com/technology/2022/11/15/iphone-satellite-sos/.
44. ↑ Tuohy, Jennifer Pattison (2023-09-12). "Apple is adding Roadside Assistance via satellite to the iPhone" (in en-US). https://www.theverge.com/2023/9/12/23870328/apple-iphone-roadside-assistance-emergency-sos-satellite-aaa.
45. ↑ "T-mobile and Starlink satellite connectivity explained: What you need to know" (in en). 2022-09-13. https://www.androidauthority.com/t-mobile-starlink-satellite-connectivity-3207661/.
46. ↑ "SpaceX to Serve T-Mobile Phones With Second-Gen Starlink Satellites" (in en). https://www.pcmag.com/news/spacex-to-serve-t-mobile-phones-with-second-gen-starlink-satellites.
47. ↑ "How T-Mobile and SpaceX are teaming up to give you coverage from space" (in en). Washington Post. 2022-08-30. https://www.washingtonpost.com/technology/2022/08/30/spacex-t-mobile-starlink-satellite/.
48. ↑ "Elon Musk’s Starlink to offer direct-to-cell service in T-Mobile partnership" (in en). 2024-01-03. https://www.kiro7.com/news/trending/elon-musks-starlink-offer-direct-to-cell-service-t-mobile-partnership/7VEEU2SMNRGJJGJ7MJRYVL5G2Q/.
49. ↑ "A new firm says it can link satellites to ordinary smartphones". The Economist. ISSN 0013-0613. https://www.economist.com/science-and-technology/2020/03/07/a-new-firm-says-it-can-link-satellites-to-ordinary-smartphones.
50. ↑ Rainbow, Jason (2023-09-20). "AST SpaceMobile’s prototype satellite makes first 5G connection" (in en-US). https://spacenews.com/ast-spacemobiles-prototype-satellite-makes-first-5g-connection/.
51. ↑ "Qualcomm announces Snapdragon Satellite for Android, and it's not just for emergencies" (in en-US). https://www.gsmarena.com/qualcomm_announces_snapdragon_satellite_twoway_satellite_messaging_for_android-news-57097.php.
52. ↑ "Iridium Project Stardust Satellite-to-Cellphone Offering Will Support 5G Messaging - Telecompetitor". https://www.telecompetitor.com/iridium-project-stardust-satellite-to-cellphone-offering-will-support-5g-messaging/.
53. ↑ "Iridium Unveils Project Stardust; Developing the Only Truly Global, Standards-Based IoT and Direct-to-Device Service" (in en-US). https://investor.iridium.com/2024-01-10-Iridium-Unveils-Project-Stardust-Developing-the-Only-Truly-Global,-Standards-Based-IoT-and-Direct-to-Device-Service.

## External links

* University of Surrey pages with information on some satellite systems, including currently planned, and defunct proposals such as Teledesic (non-commercial)
* Satellite Phone FAQ (satellite phone services and equipment reviews, non-commercial)
* Satellite mobile system architecture (technical)

Links to related articles

* v
* t
* e

Satellite communications

Main articles|

* Satellite television
* Satellite radio
* Relay satellite
* Transponder
* Satellite Internet access
* Amateur satellite
* Ground station
* High-throughput satellite

Hardware|

* Satellite data unit
* Satellite dish
* Satellite modem
* Satellite phone
* Spacebus
* Very-small-aperture terminal

Satellite radio / TV|

* DVB-SH
* S-DMB
* DVB-RCS
* DVB-S2
* Digital audio radio service

Broadcast companies|

* Astra Digital Radio
* DirecTV
* Dish Network
* Sirius XM Holdings
* Sirius Satellite Radio
* Sky Television plc
* Viasat [Nordics]
* 1worldspace

Relay satellite companies|

* EchoStar
* Eutelsat
* Globalstar
* Hughes
* Inmarsat
* Intelsat
* Iridium
* SED Systems
* SES
* Telesat
* Tooway
* Viasat, Inc. [United States]

Satellite manufacturers|

* Airbus
* Boeing
* INVAP
* Lockheed Martin
* Northrop Grumman
* SSL
* Thales Alenia Space

Trade organizations|

* Consultative Committee for Space Data Systems
* ETSI Satellite Digital Radio

Lists|

* List of communications satellite firsts
* List of communication satellite companies

* Communications satellites

* v
* t
* e

Telephony

Types|

* Landline
* Mobile phone
* Satellite phone
* Photophone

Connectivity|

* Cable protection system
* Communications satellites
* Fibre-optical
* Free-space optical
* ISDN
* Mobile phone signal
* POTS
* PSTN
* Submarine cables
* VoIP

Calls|

* Missed call
* Misdialed call
* Nuisance call
* Phone tag

Applications|

* Fax transmission
* Telephone calls
* Telephone newspapers
* Théâtrophone
* Video calls

* v
* t
* e

Telecommunications

History|

* Beacon
* Broadcasting
* Cable protection system
* Cable TV
* Communications satellite
* Computer network
* Data compression
* audio
* DCT
* image
* video
* Digital media
* Internet video
* online video platform
* social media
* streaming
* Drums
* Edholm's law
* Electrical telegraph
* Fax
* Heliographs
* Hydraulic telegraph
* Information Age
* Information revolution
* Internet
* Mass media
* Mobile phone
* Smartphone
* Optical telecommunication
* Optical telegraphy
* Pager
* Photophone
* Prepaid mobile phone
* Radio
* Radiotelephone
* Satellite communications
* Semaphore
* Semiconductor
* device
* MOSFET
* transistor
* Smoke signals
* Telecommunications history
* Telautograph
* Telegraphy
* Teleprinter (teletype)
* Telephone
* The Telephone Cases
* Television
* digital
* streaming
* Undersea telegraph line
* Videotelephony
* Whistled language
* Wireless revolution

Pioneers|

* Nasir Ahmed
* Edwin Howard Armstrong
* Mohamed M. Atalla
* John Logie Baird
* Paul Baran
* John Bardeen
* Alexander Graham Bell
* Tim Berners-Lee
* Jagadish Chandra Bose
* Walter Houser Brattain
* Vint Cerf
* Claude Chappe
* Yogen Dalal
* Donald Davies
* Lee de Forest
* Philo Farnsworth
* Reginald Fessenden
* Elisha Gray
* Oliver Heaviside
* Erna Schneider Hoover
* Harold Hopkins
* Internet pioneers
* Bob Kahn
* Dawon Kahng
* Charles K. Kao
* Narinder Singh Kapany
* Hedy Lamarr
* Innocenzo Manzetti
* Guglielmo Marconi
* Robert Metcalfe
* Antonio Meucci
* Jun-ichi Nishizawa
* Radia Perlman
* Alexander Stepanovich Popov
* Johann Philipp Reis
* Claude Shannon
* Henry Sutton
* Nikola Tesla
* Camille Tissot
* Alfred Vail
* Charles Wheatstone
* Vladimir K. Zworykin

Transmission
media|

* Coaxial cable
* Fiber-optic communication
* optical fiber
* Free-space optical communication
* Molecular communication
* Radio waves
* wireless
* Transmission line
* data transmission circuit
* telecommunication circuit

Network topology
and switching|

* Bandwidth
* Links
* Nodes
* terminal
* Network switching (circuit
* packet)
* Telephone exchange

Multiplexing|

* Space-division
* Frequency-division
* Time-division
* Polarization-division
* Orbital angular-momentum
* Code-division

Networks|

* ARPANET
* BITNET
* Cellular network
* Computer
* CYCLADES
* Ethernet
* FidoNet
* Internet
* Internet2
* ISDN
* LAN
* Mobile
* NGN
* NPL network
* Public Switched Telephone
* Radio
* Telecommunications equipment
* Television
* Telex
* WAN
* Wireless network
* World Wide Web

* Category
* Outline
* Portal
* Commons

* v
* t
* e

Mobile phones

General|

* Features
* GSM
* services
* History
* Operating system
* Security
* Phone cloning
* Telephony
* airplane mode
* Text messaging
* SMS
* MMS
* RCS
* Spam
* Tracking
* Web browsing
* HTML5

Software|

| Apps|

* Development
* Distribution
* Management
* Cloud computing

|

Commerce|

* Banking
* Marketing
* advertising
* campaigns
* Payments
* contactless
* donating
* Ticketing

Content|

* Blogging
* Email
* Gambling
* Gaming
* Health
* Instant messaging
* Learning
* Music
* News
* Search
* local
* Social
* address book
* Television

Culture|

* Charms
* Comics
* Dating
* Japanese culture
* Novels
* Ringtones
* silent mode
* Selfie
* Txtspk
* Wallpaper

Devices|

* Manufacturers
* 3D phone
* Camera phone
* Car phone
* Feature phone
* Projector phone
* Satellite phone
* Smartphone

Form factors|

* Bar
* Flip
* Phablet
* Slider
* Smartwatch

Smartphones|

* Android devices
* rooting
* BlackBerry 10
* iPhone
* iOS jailbreaking
* Open-source mobile phones
* Symbian devices
* Windows Phone devices

Environment
and health|

* Overuse and relation to mental health
* BlackBerry thumb
* Driving safety
* Electronic waste
* External power supply
* Phantom vibration syndrome
* Radiation and health
* Recycling

Law|

* Carrier IQ
* Use restrictions while driving
* Legality of recording by civilians
* Photography and the law
* Telephone tapping
* Texting while driving
* Mobile phones in prison

Networking|

* Channel capacity
* Frequencies
* Multi-band
* Network operator
* list
* Roaming
* Signal
* SIM
* dual SIM
* SIM lock
* Standards comparison
* Tethering
* VoIP
* WAP
* XHTML-MP

Generations|

* 0G
* 1G
* 2G
* 3G
* adoption
* 3.5G
* 4G
* 4.5G
* 5G

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Satellite phone. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Engineering:Satellite_phone&oldid=999913"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template