Editing Telecommunications in Thailand (section)

==Telephone==

===Fixed-line===
There are three fixed-line telephone operators in Thailand: state-owned [[TOT Public Company Limited]] (now known as [[National Telecom Public Company Limited|National Telecom (NT)]]), [[True Corporation]], and [[TT&T]] (Currently name "3BB"). As of 2014, there were 5,687,038 fixed-line subscriptions. That number has been in decline since 2008.<ref name="NBTC report 2013">{{cite web |url=http://www.nbtc.go.th/wps/wcm/connect/df9dca80442ea4be8b10fbfac72eb121/%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99%E0%B8%9C%E0%B8%A5%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%9B%E0%B8%8F%E0%B8%B4%E0%B8%9A%E0%B8%B1%E0%B8%95%E0%B8%B4%E0%B8%87%E0%B8%B2%E0%B8%99+%E0%B8%81%E0%B8%AA%E0%B8%97%E0%B8%8A+2556.pdf?MOD=AJPERES&CACHEID=df9dca80442ea4be8b10fbfac72eb121 |script-title=th:รายงานผลการปฏิบัติงาน กสทช. ประจำปี ๒๕๕๖ |date=2014 |website=National Broadcasting and Telecommunications Commission (NBTC) |language=th |trans-title=Annual Report on the Operation of the NBTC 2013 |access-date=2014-08-29 |archive-url=https://web.archive.org/web/20140903160256/http://www.nbtc.go.th/wps/wcm/connect/df9dca80442ea4be8b10fbfac72eb121/%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99%E0%B8%9C%E0%B8%A5%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%9B%E0%B8%8F%E0%B8%B4%E0%B8%9A%E0%B8%B1%E0%B8%95%E0%B8%B4%E0%B8%87%E0%B8%B2%E0%B8%99+%E0%B8%81%E0%B8%AA%E0%B8%97%E0%B8%8A+2556.pdf?MOD=AJPERES&CACHEID=df9dca80442ea4be8b10fbfac72eb121 |archive-date=2014-09-03 |url-status=dead }}</ref>

The first [[landline|fixed-line]] telephone system was installed in Thailand (Siam) under the [[Ministry of Defence (Thailand)|Ministry of Defence]] in 1881, and later its operation was transferred to the Post and Telegraph Department. The Telephone Organization of Thailand (TOT) was established in 1954 to manage the telephone system.<ref>{{cite web |url=http://www.tot.co.th/files/past%20to%20present-21-03-55.pdf |title=From Past to Present |website=TOT Public Company Limited |access-date=2014-08-29 |archive-url=https://web.archive.org/web/20130927225528/http://tot.co.th/files/past%20to%20present-21-03-55.pdf# |archive-date=2013-09-27 |url-status=dead }}</ref>

The penetration of telephone remained relatively limited for most of the 20th century. In 1992, the ratio of telephone lines per population was 3.3 lines per 100 population. In 1991, two private corporations were given concessions to build and operate telephone lines: Telecom-Asia (later renamed [[True Corporation]]) for the [[Bangkok Metropolitan Region]] and Thai Telephone & Telecommunications (TT&T) for the provinces.<ref>{{cite journal |last=Hossain |first=Liaquat |date= 1996 |title=Telecommunications Network Development: Organisational and Societal Challenges for Thailand |url=http://ijcim.th.org/past_editions/1996V04N1/15_Telecommunications_Network_Development-Organisational_and_Societal_Challenges_for_Thailand.pdf |journal=International Journal of the Computer, the Internet and Management |volume=4 |issue=1 |access-date=2014-08-29}}</ref>

===Mobile networks===
As of 2014, there were 97.6 million mobile subscribers in Thailand, a penetration rate of 146 percent of the total population. The Thai market is predominantly [[Prepaid mobile phone|prepaid]] with 84.8 million prepaid subscribers. More than 99 percent of the market share belongs to three large operators (including their subsidiaries): [[Advanced Info Service]] (AIS), 46.52 percent market share, [[DTAC]], 28.50 percent market share, and [[Truemove]], 24.26 percent. Other operators include the state enterprises [[TOT Public Company Limited]] (TOT) with 0.57 percent market share, and [[CAT Telecom]] with 0.15 percent market share and [[mobile virtual network operator|Mobile Virtual Network Operators]] (MVNOs).<ref>"[http://www.slideshare.net/yozzo1/thailands-mobile-market-information-q4-2014 Thailand's Mobile Market Information Q4 2014]" Slideshare</ref>

In 1980s and 1990s, private mobile operators were given concessions from TOT and CAT. TOT and CAT were corporatised in 2002–2003, and the Thai telecommunications landscape transitioned towards spectrum allocation by independent regulator. The [[2007 Constitution of Thailand|2007 constitution]] and the ''Act on Organization to Assign Radio Frequency and to Regulate the Broadcasting and Telecommunications Services'' include the provisions that a national independent regulator is established and frequencies for commercial activities must be allocated via auction.<ref>{{cite web |url=http://www.nbtc.go.th/wps/wcm/connect/a0726c804a97b6209a1edfb1f5b6d48d/%E0%B9%80%E0%B8%A7%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%8A%E0%B8%B1%E0%B9%88%E0%B8%99%E0%B8%A0%E0%B8%B2%E0%B8%A9%E0%B8%B2%E0%B8%AD%E0%B8%B1%E0%B8%87%E0%B8%81%E0%B8%A4%E0%B8%A9.pdf?MOD=AJPERES&CACHEID=a0726c804a97b6209a1edfb1f5b6d48d |title=Unofficial translation: Act on Organization to Assign Radio Frequency and to Regulate the Broadcasting and Telecommunications Services B.E. 2553 (2010)| format=PDF}}</ref> The first successful spectrum auction by the [[National Broadcasting and Telecommunications Commission]] was organised in 2012, allocating 45&nbsp;MHz of [[UMTS frequency bands#UMTS-FDD frequency bands and channel bandwidths|IMT (2100) frequency band]] to three mobile phone operators.

Legislation that governs the Mobile networks includes the Act on the Organisation to Assign Radio Frequency and to Regulate Broadcasting and Telecommunications Services 2010 (the NBTC Act) and the Telecommunications Business Act 2001 (the Telecommunications Business Act). Additionally, any operator wishing to issue telephone numbers shall obtain a separate licence from the NBTC, subject to a Telecommunications Numbering Plan issued by the NBTC.<ref>{{Cite web|url=https://gettingthedealthrough.com/area/39/jurisdiction/60/telecoms-media-thailand/|title = Work areas - Getting the Deal Through - Lexology}}</ref>

In 2015 the NBTC arranged two rounds of auctions for 1800&nbsp;MHz and 900Mhz. In November, Advance Info Service and True Corporation won the 1800&nbsp;MHz license in the auction which takes nearly 33 hours to complete. In December, True Corporation and Jasmine International won the 900&nbsp;MHz auction. The significance of this auction is the establishment of Jasmine International in the telecommunication business which didn't have a new player for many years. There are many rumours following this auction questioning Jasmine International on its ability to pay the license fee to NBTC.<ref>{{cite web|title=หรือจะต้องประมูลคลื่น 900 MHz กันอีกรอบ?|url=http://www.kao-it.com/2016/01/30/%E0%B8%AB%E0%B8%A3%E0%B8%B7%E0%B8%AD%E0%B8%88%E0%B8%B0%E0%B8%95%E0%B9%89%E0%B8%AD%E0%B8%87%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%A1%E0%B8%B9%E0%B8%A5%E0%B8%84%E0%B8%A5%E0%B8%B7%E0%B9%88%E0%B8%99-900-mhz/|website=www.kao-it.com|access-date=2016-01-30|archive-url=https://web.archive.org/web/20170105235206/http://www.kao-it.com/2016/01/30/%E0%B8%AB%E0%B8%A3%E0%B8%B7%E0%B8%AD%E0%B8%88%E0%B8%B0%E0%B8%95%E0%B9%89%E0%B8%AD%E0%B8%87%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%A1%E0%B8%B9%E0%B8%A5%E0%B8%84%E0%B8%A5%E0%B8%B7%E0%B9%88%E0%B8%99-900-mhz/|archive-date=2017-01-05|url-status=dead}}</ref>

In 2017, the number of mobile subscribers has reached 121.53 million,<ref>"[https://www.statista.com/statistics/501146/number-of-mobile-cellular-subscriptions-in-thailand/ Statistik 2017]</ref><ref>"[https://www.theglobaleconomy.com/Thailand/Mobile_phone_subscribers/ Statistik 2017]</ref> and in 2018 has already reached 125.6 million.<ref>"[http://ttid.nbtc.go.th/mobile_subscribers.html Statistik 2018]</ref> To purchase a SIM card in Thailand, it is necessary to present an ID to register.

At the end of 2021, the total number of mobile subscriptions in Thailand was 99.4 million, representing a mobile penetration rate of 150 percent of the total population. More than 96.5 percent of the total market share belongs to three large operators (including their subsidiaries): [[Advanced Info Service]] (AIS), 44.38 percent market share, [[Truemove]], 32.44 percent and [[DTAC]], 19.68 percent market share. Other operators include the state enterprises [[National Telecom Public Company Limited|National Telecom (NT)]] with 3.45 percent market share, and [[mobile virtual network operator|mobile virtual network operators (MVNO)]] with 0.05 percent market share, resulting in a [[Herfindahl–Hirschman index|(HHI)]] of 3,421<ref>"[https://www.yozzo.com/insights/thailands-mobile-market-end-of-year-2021/ Thailand’s Mobile Market End of Year 2021]" Yozzo</ref>

On November 22, 2021, [[Telenor]] and [[Charoen Pokphand|Charoen Pokphand Group]], officially announced they have agreed to explore a USD 8.6 billion merger plan between Thailand’s second and third largest telecom operators (by subscribers), [[True Corporation]] (TRUE) and [[Total Access Communication]] (DTAC) – The proposed merger is subject to regulatory approvals.<ref>{{Cite news|url=https://www.yozzo.com/insights/a-deep-dive-into-the-true-dtac-merger-in-thailand/|title=A deep dive into the TRUE/DTAC merger in Thailand| work=Yozzo.com|access-date=2022-01-06}}</ref> The merger was "acknowledged" by the regulator NBTC at a meeting on October 20, 2022.<ref>[https://asia.nikkei.com/Business/Telecommunication/Thai-telecoms-regulator-allows-7.3bn-True-DTAC-merger Thai telecoms regulator allows $7.3bn True-DTAC merger]</ref> The newly merged company still retain the True Corporation name, which was founded on March 1, 2023 and it was listed on the [[Stock Exchange of Thailand]] under the stock ticker symbol TRUE on March 3, 2023.<ref>[https://www.bangkokpost.com/business/2481210/merged-true-dtac-to-be-called-true-corp Merged True-DTAC to be called True Corp]</ref>

{|class="wikitable"
|-
! style="width:3%;"| Rank !! style="width:15%;"| Operator !! style="width:30%;"| Technology !! style="width:20%;" | Subscribers !! style="width:32%;"| Ownership
|-
|align=right| 1 || [[Advanced Info Service|AIS]] ||[[GSM]]-900 ([[GPRS]], [[Enhanced Data Rates for GSM Evolution|EDGE]]),<br>900/2100&nbsp;MHz [[UMTS]], [[High-Speed Packet Access|HSPA]], [[HSPA+]], [[DC-HSPA+]] <br>900/1800/2100&nbsp;MHz [[LTE Advanced|LTE-A]], [[LTE in unlicensed spectrum|LTE-U/LAA]], <br><small>Pseudo [[Mobile virtual network operator|MVNO]] on [[TOT (Thailand)|TOT]] B1 2100&nbsp;MHz</small> <ref>{{Cite web|url=https://www.slideshare.net/yozzo1/thailands-telecom-structure-2017|title=Thailand's Telecom Structure 2017|website=www.slideshare.com|date=6 June 2017|language=en|access-date=2018-12-31}}</ref><br />|| 38.5 million<ref name="beartai.com">{{cite web|url=http://www.beartai.com/news/10879 | title="กสทช." เผยคนใช้มือถือในไทยใกล้ 100 ล้านเบอร์ !!| date=11 March 2014}}</ref> (Q3 2015) <br /> 41,436,800<ref name="bar">{{cite web|url=http://www.yozzo.com/insights/thailands-mobile-market-end-of-year-2020/ | title="Thailand's Mobile Market End of Year 2020| date=7 March 2021}}</ref> (EOY 2020)<br /> 44,116,700<ref name="foo">{{cite web|url=https://www.yozzo.com/insights/thailands-mobile-market-end-of-year-2021/ | title="Thailand’s Mobile Market End of Year 2021| date=20 February 2022}}</ref> (EOY 2021)|| [[Shin Corporation|INTOUCH Company]] (40.45%)<br>[[Singtel]] (23.32%)
|-
|align=right| 2 || [[DTAC]] (merged with [[True Corporation|True]] to form a new [[True Corporation]]) || [[GSM]]-1800&nbsp;MHz([[GPRS]], [[Enhanced Data Rates for GSM Evolution|EDGE]])<br>850/2100 &nbsp;MHz [[UMTS]] [[High-Speed Packet Access|HSPA]], [[HSPA+]], [[DC-HSPA+]]<br>1800/2100&nbsp;MHz [[LTE (telecommunication)|LTE]], <br><small>Pseudo [[Mobile virtual network operator|MVNO]] on [[TOT (Thailand)|TOT]] B40 2300&nbsp;MHz</small> <ref>{{Cite web|url=https://www.slideshare.net/yozzo1/thailands-telecom-structure-2017|title=Thailand's Telecom Structure 2017|website=www.slideshare.com|date=6 June 2017|language=en|access-date=2018-12-31}}</ref><br />||25.3 million<ref name="beartai.com"/> (Q3 2015) <br /> 18,856,000<ref name="bar" /> (EOY 2020) <br />19,561,000<ref name="foo"/> (EOY 2021) || [[Charoen Pokphand|Charoen Pokphand Group]] (3.41%)<br>[[Telenor]] (19.64%)<br>[[China Mobile]] (7.81%)<br>[[National Telecom Public Company Limited|National Telecom]] (2.39%)<br>[[Stock Exchange of Thailand|Thai NVDR]] (9.81%)
|-
|align=right| 3 || [[TrueMove H]] (merged with [[DTAC]] to form a new [[True Corporation]]) ||[[Personal Handy-phone System|PHS]]<br> [[GSM]]-900/1800&nbsp;MHz ([[GPRS]], [[Enhanced Data Rates for GSM Evolution|EDGE]])<br> 850/2100&nbsp;MHz [[UMTS]] [[High-Speed Packet Access|HSPA]], [[HSPA+]], [[DC-HSPA+]]<br />900/1800/2100&nbsp;MHz [[LTE Advanced|LTE-A]], <br><small>Pseudo [[Mobile virtual network operator|MVNO]] on [[CAT Telecom]] B5 850&nbsp;MHz</small> <ref>{{Cite web|url=https://www.slideshare.net/yozzo1/thailands-telecom-structure-2017|title=Thailand's Telecom Structure 2017|website=www.slideshare.com|date=6 June 2017|language=en|access-date=2018-12-31}}</ref><br />||24 million<ref name=20140814-true>{{cite web | url=http://true.listedcompany.com/newsroom/20140814-true-set02-th.pdf | title=ที่ TRUE-SEC 050/2557 | language=th | access-date=27 November 2014}}</ref> (Q3 2015) <br />30,628,000<ref name="bar" /> (EOY 2020) <br />32,250,000<ref name="foo"/> (EOY 2021)|| [[Charoen Pokphand|Charoen Pokphand Group]] (3.41%)<br>[[Telenor]] (19.64%)<br>[[China Mobile]] (7.81%)<br>[[National Telecom Public Company Limited|National Telecom]] (2.39%)<br>[[Stock Exchange of Thailand|Thai NVDR]] (9.81%)
|-
|align=right| 4 || [[National Telecom Public Company Limited|National Telecom (NT)]] || 850&nbsp;MHz B5 [[UMTS]] [[High-Speed Packet Access|HSPA, HSPA+]], [[DC-HSPA+]] <br> 2100&nbsp;MHz B1 [[UMTS]] [[High-Speed Packet Access|HSPA]], [[HSPA+]], [[DC-HSPA+]] <br> 2300&nbsp;MHz B40 [[TD-LTE|TDD LTE]] || 3,425,730<ref name="foo"/> (EOY 2021)|| [[Ministry of Digital Economy and Society]]
|-
|align=right| 5 || [[CAT Telecom|MY]] <br><small>Merged into [[National Telecom Public Company Limited|National Telecom (NT)]] on 7 January 2021</small> || 850&nbsp;MHz B5 [[UMTS]] [[High-Speed Packet Access|HSPA, HSPA+]], [[DC-HSPA+]]|| 2,833,502<ref name="bar" /> (EOY 2020)|| [[CAT Telecom]]
|-
|align=right| 6 || [[TOT (Thailand)|TOT]] <br><small>Merged into [[National Telecom Public Company Limited|National Telecom (NT)]] on 7 January 2021</small> || 2100&nbsp;MHz B1 [[UMTS]] [[High-Speed Packet Access|HSPA]], [[HSPA+]], [[DC-HSPA+]] <br> 2300&nbsp;MHz B40 [[TD-LTE|TDD LTE]] || 106,875<ref>{{cite web|url=http://www.yozzo.com/news-and-information/mvno-mobile-operator-s/thailands-mvno-market-2016-tot-2100mhz-2300mhz | title="Thailand's MVNO Market 2016 – TOT, 2100MHz, 2300MHz| date=3 January 2017}}</ref> (Q3 2016) <br /> 532,905<ref name="bar" /> (EOY 2020)|| [[TOT (Thailand)|Telephone Organization of Thailand (TOT)]]
|-
|-
|-
! colspan="5" style="text-align:center;"| [[Mobile Virtual Network Operator]]s
|-
|align=right| 1 || IEC3G Buzzme <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz || Closed 2018 || Mobile 8 Telco Sdn Bhd.
|-
|align=right| 2 || MyWorld 3G <br/> <small>(Host operator [[CAT Telecom|CAT]])</small> ||'''3G :''' [[UMTS]]/[[WCDMA]] : B5 850&nbsp;MHz || Closed || Data CDMA Communication Co., Ltd.
|-
|align=right| 3 || OPEN SIM i-mobile <br/> <small>(Host operator [[CAT Telecom|CAT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B5 850&nbsp;MHz || Closed 2017<ref name="ReferenceA">{{Cite web|url=http://www.yozzo.com/news/mvna-mvne-mvno/i-mobile-hangs-up-its-mvno-business/|title=i-mobile hangs up its MVNO business|website=www.yozzo.com|date=13 June 2017|language=en|access-date=2018-12-27}}</ref> || Samart Corporation Public Company Limited.
|-
|align=right| 4 ||imobile-3GX <br/> <small>(Host operator [[CAT Telecom|CAT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B5 850&nbsp;MHz || Closed 2017<ref name="ReferenceA"/> || Samart Corporation Public Company Limited.
|-
|align=right| 5 || 168 <br/> <small>(Host operator [[CAT Telecom|CAT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B5 850&nbsp;MHz || Closed 2018 || 168 Communication Co Ltd.
|-
|align=right| 6 || Mojo 3G <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz|| Closed 2017<ref>{{Cite web|url=http://www.yozzo.com/news/mvna-mvne-mvno/another-tot-mvno-hangs-up/|title=Another TOT MVNO hangs up|website=www.yozzo.com|date=28 January 2017|language=en|access-date=2018-12-27}}</ref> || MConzult Asia Co., Ltd.
|-
|align=right| 7 || Tune Talk <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz || Closed || Loxley Public Company Limited (50%)<br>Tune Group Sdn Bhd (10%)<br>Thai AirAsia Co., Ltd. (40%)
|-
|align=right| 8 || i-Kool 3G <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz || Closed 2022<ref>{{Cite web|url=https://www.linkedin.com/posts/alrathai_mvno-ikool-feels-activity-7292251614512324608-1Y_m|title=End of an Era: Thailand’s longest-surviving MVNO to shut down|website=www.linkedin.com|language=en|access-date=2025-04-26}}</ref> <br />2,251<ref name="bar" /> (EOY 2020) <br />2,219<ref name="foo"/> (EOY 2021) || Loxley Public Company Limited.
|-
|align=right| 9 || Penguin SIM <br/> <small>(Host operator [[CAT Telecom|CAT]] & [[TOT (Thailand)|TOT]])</small> ||'''3G :''' [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz / B5 850&nbsp;MHz || Closed 2022<ref>{{Cite web|url=https://www.yozzo.com/industry-news/thai-mvno-penguin-sim-throws-in-the-towel/|title=Thai MVNO Penguin SIM throws in the towel|website=www.yozzo.com|date=26 September 2022|language=en|access-date=2022-10-24}}</ref> <br />300,000<ref>{{Cite web|url=http://www.yozzo.com/news/thai-telecom/thailands-mvno-market-2016-cat-telecom-penguin-myworld3g/|title=Thailand's MVNO Market 2016 – TOT, 2100MHz, 2300MHz|website=www.yozzo.com|date=3 January 2017|language=en|access-date=2018-12-27}}</ref> (Q3 2018) <br /> 29,690<ref name="bar" /> (EOY 2020) <br />25,578<ref name="foo"/> (EOY 2021) || The WhiteSpace Co.Ltd.
|-
|align=right| 10 || K4 SIM <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz <br /> '''4G :''' [[LTE-FDD]] : B1 2100&nbsp;MHz <br /> '''4.5G :'''  [[TDD LTE]] : B40 2300&nbsp;MHz || Closed 2025<ref>{{Cite web|url=https://mvno.services/mvno-news/nbtc-revokes-k4-sim-mvno-license-amid-fraud-investigation/|title=NBTC Revokes K4 SIM’s MVNO License Amid Fraud Investigation|website=www.mvno.services|language=en|access-date=2025-04-26}}</ref> <br />(License revoked) ||  K4 Communication Co., Ltd.
|-
|align=right| 11 || Feels <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz <br /> '''4G :''' [[LTE-FDD]] : B1 2100&nbsp;MHz <br /> '''4.5G :'''  [[TDD LTE]] : B40 2300&nbsp;MHz || 4,574<ref name="bar" /> (EOY 2020) <br />26,832<ref name="foo"/> (EOY 2021)||  Feels Telecom Corporation Co., Ltd.
|-
|align=right| 12 || AJ SIM <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz <br /> '''4G :''' [[LTE-FDD]] : B1 2100&nbsp;MHz <br /> '''4.5G :'''  [[TDD LTE]] : B40 2300&nbsp;MHz || Launched November 2020<ref>{{Cite web|url=http://www.yozzo.com/news/mvna-mvne-mvno/new-m2m-mvno-aj-sim-launched-in-thailand/|title=New M2M MVNO AJ SIM launched in Thailand|website=www.yozzo.com|date=13 November 2020|language=en|access-date=2021-05-26}}</ref> ||  AJ Advance Technology Pcl.
|-
|align=right| 13 || Redone <br><small>(Host operator [[TOT (Thailand)|TOT]])</small> ||'''3G :'''  [[UMTS]]/[[WCDMA]] : B1 2100&nbsp;MHz <br /> '''4G :''' [[LTE-FDD]] : B1 2100&nbsp;MHz <br /> '''4.5G :'''  [[TDD LTE]] : B40 2300&nbsp;MHz || Launched May 2021<ref>{{Cite web|url=http://www.yozzo.com/news/mvna-mvne-mvno/redone-has-launched-its-mvno-service-in-thailand/|title=redONE has launched its MVNO service in Thailand|website=www.yozzo.com|date=19 May 2021|language=en|access-date=2021-05-26}}</ref> <br />1,888<ref name="foo"/> (EOY 2021)||  Red One Network (Thailand) Co., Ltd
|}

===Mobile Virtual Network Aggregator (MVNA) / Mobile Virtual Network Enabler (MVNE)===
The National Broadcasting and Telecommunications Commission (NBTC), has awarded a Type 1 Mobile Virtual Network Aggregator (MVNA) license to the MVNA and [[Mobile virtual network enabler]] (MVNE) company [https://mvno.services/ MVNO.SERVICE Co., Ltd.]<ref>{{Cite web|url=https://mvno.services/press-releases/new-joint-venture-to-transform-thailands-mobile-service-sector/|title=New Joint Venture to Transform Thailand’s Mobile Service Sector|website=www.mvno.services|date=27 November 2024|language=en|access-date=2024-12-04}}</ref>

===Numbering===
{{Further|Telephone numbers in Thailand}}
Fixed-line telephone numbers have nine digits, while mobile numbers have ten digits, both including the [[trunk prefix]] "0".
<!----
===Telephone system===
High quality, especially in urban areas such as Bangkok; liberalization, as required by [[World Trade Organization]] commitment, is complete by 2006
*Domestic: [[microwave]] radio relay and multichannel cable; domestic [[satellite]] including new [[iPSTAR]] satellite, so far the heaviest comms satellite in orbit.
*International: Satellite earth stations - 2 [[Intelsat]] (1 Indian Ocean and 1 Pacific Ocean)--->