Síminn
Major Icelandic telecommunications operator providing mobile, broadband, fixed-line, television, streaming, and related communications services.
Last updated November 4, 2026
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Overview
Síminn hf. is an Icelandic telecommunications company and the successor to the country's former state telephone administration. Its business serves households, businesses, and public-sector customers through mobile communications, fixed-line voice, broadband internet, television, IPTV, streaming, and related digital services. The company operates in Iceland, where it remains one of the principal communications providers and a historically important national infrastructure operator. The brand's origins reach back to 1906, when Iceland established a national telegraph and telephone service after a submarine telegraph cable connected the country with the Faroe Islands and Scotland. The early service combined long-distance communications infrastructure with telephone networks centered on Reykjavík. In 1912, the Reykjavík Telephone Company was merged into the national telephone administration. Postal and telephone operations were consolidated in 1935 under Póstur og Sími, which operated as the dominant state communications institution for much of the twentieth century. The telecommunications function was separated from Iceland Post in 1998 and continued under the Landssíminn name. This restructuring coincided with the opening of Iceland's telecommunications market to competition. New rivals entered mobile, internet, and fixed-line services, ending the former monopoly and forcing the incumbent to compete on pricing, network coverage, broadband performance, and bundled services. The company was privatized in 2005 when the Icelandic government sold its controlling stake to Skipti ehf. Landssíminn subsequently merged with related companies and adopted the Síminn name. Síminn's development has followed the major technological transitions of Icelandic communications. Its predecessor organizations expanded automatic switching, nationwide long-distance dialing, digital exchanges, international submarine connectivity, satellite communications, and fiber-optic infrastructure. Mobile services progressed from NMT in 1986 to GSM in 1994, 3G in 2007, 4G in 2013, and mid-band 5G in 2021. The company also introduced SMS in 1997. Legacy NMT, PSTN, POTS, and ISDN services have since been retired, with traditional fixed voice customers moved toward IP-based services; 2G and 3G networks were scheduled for shutdown in 2025. In fixed broadband, Síminn introduced dial-up internet in 1996 and ADSL in 1999. It later participated with Míla in the development of VDSL and fiber-based access, including the Ljósnet service launched in 2009. Broadband capacity evolved from early 50 Mb/s offerings to higher-speed fiber products, including multi-gigabit services in the 2020s. IPTV, introduced in the early 2000s, enabled the company to combine voice, internet, and television in bundled triple-play packages. Its wider media activities have included live television, video on demand, streaming, and television production. A major structural change occurred in 2007, when the physical network business was separated from the main operating company as Míla. Míla owned and operated important national trunk and access infrastructure, while Síminn focused more directly on customer-facing communications and media services. Míla was later sold to the investment firm Ardian, a transaction reported at approximately ISK 46 billion and accompanied by public debate about foreign ownership and the strategic importance of national telecommunications infrastructure. Síminn has also worked with Ericsson on mobile-network development. Today, Síminn is positioned as an integrated Icelandic communications and entertainment provider. Its competitive proposition combines nationwide mobile coverage, broadband connectivity, fixed and wireless services, television, streaming, and business communications. The company reported population coverage of more than 99% for its 4G and 5G mobile network in the referenced material. Its history gives the brand an incumbent heritage, while its current operations place it in competition with other Icelandic mobile, broadband, and media providers.
History
Iceland's national telecommunications history began in 1906, when a submarine telegraph cable reached Seyðisfjörður from the direction of Scotland through the Faroe Islands. A telegraph and telephone connection was built from the landing point to Reykjavík, and a national organization known as Landssíminn was established. Telephone activity had already begun through private local links in the 1890s and a Reykjavík telephone company founded in 1904, but the private Reykjavík network was merged into Landssíminn in 1912. The organization expanded from a capital-centered telephone service into a nationwide network. A new headquarters and automatic exchange opened in Reykjavík in 1931, followed by another automatic exchange in Hafnarfjörður. Postal and telephone services were consolidated in 1935 as Póstur og Sími. Direct subscriber trunk dialing was introduced in southwestern Iceland in 1951, expanded to Akureyri in 1965, and eventually became available nationwide. Rural telephone-line construction was substantially completed around 1960, while all telephone exchanges were connected to automatic systems by 1986. Technological modernization accelerated in the second half of the twentieth century. Iceland opened international shortwave telephone links with Denmark and Britain in 1935 and with New York in 1946. Submarine telephone cables to Scotland and Canada entered service in 1962, and the Skyggnir satellite ground station began operating in 1980. Digital switching started with an Ericsson AXE exchange in Reykjavík in 1984 and was extended to all exchanges by 1995. Fiber-optic cable construction began in 1985. A seven-digit numbering plan was introduced in 1995, and national calls moved to a flat minute rate in 1997. ISDN became available from 1996. Mobile communications developed through several generations. Iceland's NMT network entered service in 1986, GSM began in 1994, and SMS was introduced in 1997. A 3G network followed in 2007, 4G in 2013, and mid-band 5G in 2021. The older NMT system closed in 2010, while GSM and 3G were scheduled for retirement in 2025. Internet and broadband services became central to the business in the 1990s. Síminn launched dial-up access in 1996 and ADSL in 1999, bringing broadband rapidly to urban areas. A limited coaxial cable television and internet rollout began in 1997 but was eventually discontinued in favor of DSL and fiber. In the early 2000s, Síminn introduced IPTV with live television and video on demand over ADSL, allowing it to sell integrated voice, television, and internet packages. In 2009, Míla, working with Síminn, introduced VDSL and GPON fiber services under the Ljósnet name. These services later progressed to gigabit and, by 2023, 10-gigabit offerings in supported locations. The end of the state-monopoly era came with telecommunications-market liberalization in 1998. The telecommunications business was separated from Iceland Post and continued as Landssíminn. Competitors including TAL, Íslandssími, and later Og Vodafone entered mobile and fixed communications, while numerous internet providers competed in access and online services. The state privatized Landssími Íslands in July 2005 by selling its 98.8% holding to Skipti ehf. Later that year, Landssími Íslands, SkjárEinn, and Skipti-related entities were consolidated and the company adopted the Síminn name. A further reorganization created a distinct infrastructure company, Míla, in 2007. Míla owned and operated physical national trunk and access networks, while Síminn concentrated on retail telecommunications and related services. Míla was later sold to Ardian for a reported approximately ISK 46 billion. The transaction generated debate over the transfer of strategically important infrastructure to foreign investors. Síminn continued to operate as a listed Icelandic telecommunications company, expanding its mobile, broadband, television, streaming, and business-service activities. Its present identity combines the historical role of Iceland's former national telephone administration with the operating model of a competitive, converged communications provider.
- 2025
2G and 3G shutdown
[1]The company scheduled the retirement of its legacy GSM and 3G networks.
- 2024
Legacy fixed voice services closed
[1]PSTN, POTS, and ISDN services were retired and customers were moved to VoIP.
- 2022
Míla sold to Ardian
[1]The group's former infrastructure arm was sold to Ardian in a transaction reported at approximately ISK 46 billion.
- 2021
Mid-band 5G launches
[1]Síminn began operating mid-band 5G mobile services.
- 2013
4G mobile service launches
[1]Síminn introduced fourth-generation mobile broadband services.
- 2009
Ljósnet VDSL and fiber services launch
[1]Míla and Síminn introduced VDSL and GPON fiber-based access under the Ljósnet brand.
- 2007
3G launches and Míla is separated
[1]Síminn introduced 3G mobile service and separated its physical network infrastructure into Míla.
- 2005
Landssími Íslands is privatized and renamed Síminn
[1]The government sold its controlling interest, and corporate consolidation led to the Síminn name.
- 2004
IPTV service introduced
[1]The company launched IPTV with live television and video on demand over its broadband network.
- 1999
ADSL broadband introduced
[1]Síminn deployed ADSL broadband, initially focusing on urban areas.
Products and positioning
An established Icelandic full-service communications and entertainment provider combining incumbent network heritage with mobile, broadband, television, streaming, and business connectivity.
Mobile telecommunications · 1986
Mobile communications
Síminn provides consumer and business mobile voice, messaging, and data services over its Icelandic cellular network. The network evolved from NMT and GSM to 3G, 4G, and 5G. The referenced material describes 4G and 5G population coverage of more than 99%, positioning mobile connectivity as one of the company's core national services.
Internet access · 1996
Broadband and fiber
The company's internet portfolio developed from dial-up access and ADSL into VDSL and full-fiber services. Fiber access was developed with Míla through the Ljósnet platform and subsequently expanded to gigabit and multi-gigabit speeds where infrastructure is available. Broadband connectivity supports both standalone access and bundled television and voice propositions.
Fixed telecommunications · 1906
Fixed voice and VoIP
Síminn historically operated Iceland's fixed telephone network, including PSTN, POTS, and ISDN services. Those legacy technologies were retired in 2024, with customers transferred to IP-based voice services. Fixed communications remain relevant to business customers and households as part of broader connectivity packages.
Television and pay TV · 2004
IPTV and television
Síminn introduced IPTV in the early 2000s, delivering live television and video on demand through its broadband network. Television services support the company's converged communications strategy by combining connectivity with entertainment. The wider business has also included streaming services and television production.
Enterprise telecommunications
Business communications
Síminn serves corporate and institutional customers with communications connectivity and related telecommunications services. The offering is built around mobile, fixed, broadband, internet, and integrated communications capabilities rather than a single enterprise product.
Brand decisions
2024
Migration from legacy fixed telephony to VoIPGeneration changeBackground
Legacy circuit-switched fixed telephone technologies were being replaced by internet-based communications.
Action taken
Síminn closed PSTN, POTS, and ISDN services and transferred customers to VoIP.
Aftermath
The change completed a major stage of the company's transition to IP-based fixed communications.
2022
Sale of Míla to ArdianM&ABackground
The group reviewed the ownership structure of its infrastructure assets and pursued a transaction involving its national trunk and access network subsidiary.
Action taken
Míla was sold to Ardian.
Aftermath
The transaction produced public debate about foreign ownership and the strategic importance of Icelandic telecommunications infrastructure, while Síminn continued as the customer-facing operator.
Reported transaction value. Approximately ISK 46 billion (2022)
2021
Mid-band 5G deploymentProduct launchBackground
Mobile users and enterprises were moving toward higher-capacity, lower-latency networks.
Action taken
Síminn launched mid-band 5G mobile service in Iceland.
Aftermath
5G became part of the operator's technology roadmap alongside its established 4G network.
2009
Launch of Ljósnet broadband accessProduct launchBackground
Demand for faster fixed broadband was increasing beyond the capabilities of conventional ADSL.
Action taken
Míla, working with Síminn, introduced VDSL and GPON fiber technology under the Ljósnet name.
Aftermath
The service provided a path from DSL toward fiber-based access and later higher-speed broadband tiers.
2007
Separation of the infrastructure businessStrategyBackground
The group sought to distinguish customer-facing telecommunications operations from ownership and operation of national physical network assets.
Action taken
Míla was established as the infrastructure arm, alongside Síminn as the main operating company and a separate real-estate entity.
Aftermath
The reorganization created a distinct infrastructure business that was ultimately sold to Ardian.
2005
Privatization and corporate consolidationStrategyBackground
The former state telecommunications incumbent was being separated from its postal origins while Iceland's communications market opened to competition.
Action taken
The Icelandic government sold its 98.8% interest in Landssími Íslands to Skipti ehf.; later in the year related companies were merged and the Síminn name was adopted.
Aftermath
Síminn became a privately controlled, commercially oriented telecommunications company and later operated as a listed company.
Recent events
- 2025
Síminn retires 2G and 3G mobile networks[1]
Product generation
The operator planned the closure of its legacy GSM and 3G networks as mobile services moved toward newer 4G and 5G technologies.
- 2024
Síminn retires legacy fixed-line telephone services[1]
Product generation
The company shut down PSTN, POTS, and ISDN services and transitioned affected fixed-line customers to voice-over-IP services.
- 2022
Míla is sold to Ardian[1]
M&A · Regulation
Síminn's infrastructure arm Míla was sold to Ardian. The transaction was reported at approximately ISK 46 billion and prompted discussion about foreign ownership and the national-security implications of transferring control of strategic communications infrastructure.
- 2017
Síminn and Ericsson establish a mobile-network deployment partnership[1]
Other
Síminn partnered with Ericsson in the development and deployment of elements of its mobile network infrastructure.
- 2007
Síminn separates infrastructure operations into Míla[1]
Other
The group reorganized its activities, separating the customer-facing telecommunications company from Míla, which owned and operated national trunk and access infrastructure.
- 2005
Iceland privatizes Landssími Íslands[1]
M&A
The Icelandic government sold its 98.8% stake in the former national telecommunications operator to Skipti ehf., beginning the company's transition from state ownership to private control.
- 2005
Landssíminn adopts the Síminn name after corporate consolidation[1]
Other
Landssími Íslands, SkjárEinn, and Skipti-related entities were consolidated and the operating company adopted the Síminn name.
Sources1 sources
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