CSL Mobile explained

CSL Mobile Limited 香港移動通訊有限公司
Type:	Subsidiary
Foundation:	1980 (first incorporation) 2014 (the merger with PCCW Mobile)
Location Country:	Hong Kong
Area Served:	Hong Kong
Industry:	Mobile communication
Parent:	HKT
Homepage:

CSL Mobile Limited is a Hong Kong telecommunications company, which operates mobile network brands of "csl", "1O1O" and "Club SIM". CSL is a subsidiary of Hong Kong Telecom (HKT) and was Hong Kong's first mobile communications operator established in 1983,^[1] and also the first network to launch the world’s first dual band 4G LTE network with DC-HSPA+.

The brand CSL was under different legal person in its operating history, namely Communication Services Limited, which known as Hong Kong Telecom CSL Limited from 1990 to 1999, and then Cable & Wireless HKT CSL Limited from 1999 to 2001, and then Hong Kong CSL Limited from 2001 (it became a subsidiary of CSL Limited^[2] after the formation of CSL New World Mobility), CSL Limited (formerly known as New World PCS) and CSL Mobile Limited; The current legal person of the brand, CSL Mobile Limited, was formally known as PCCW Mobile HK Limited. It was the result of the merger of the brands CSL and PCCW Mobile.

History

In the 1990s, CSL was a company of PCCW (formerly HKT). In 2002, PCCW sold CSL. In 2005, PCCW re-entered the mobile network operator business by acquiring SUNDAY^{[3] [4]} and setting up a new brand "PCCW Mobile". In 2014, HKT (a member of PCCW Group) acquired CSL New World Mobility and its subsidiaries such as CSL Limited and New World Mobility. In 2014, the legal person of PCCW Mobile was renamed into CSL Mobile Limited.^[5] However, it used the brand CSL instead.

CSL was an abbreviation for Communication Services Limited^{[6] [7]} and their original branding of "Create a Simple Life".^[8] The CSL brand, logo and corporate colour (green) were all updated in August 2011 ^[9] and again in recent year.

Timeline

• 1980: Communication Services Limited was incorporated.^[5]
• 1984: CSL, a wholly owned subsidiary of Hong Kong Telecom, launches Hong Kong's first public mobile radiotelephone service using NEC's Advance Mobile Telephone System.^[10]
• July 1993: CSL launches its GSM service.^[10]
• June 1997: CSL launches its GSM 1800 network.^[10]
• December 1997: CSL acquires Pacific Link Communications. The acquisition included the digital cellular phone services (D-Amps), PCS (GSM1800) and radio paging services.^[10]
• 2000: PCCW Limited buys HKT, including subsidiary CSL (known as Hong Kong Telecom CSL Limited at that time), for an estimated US$38 billion from Cable & Wireless.^[11]
• February 2001: PCCW sells 60% of CSL to Telstra for $3.05 billion, in a joint venture called "Regional Wireless Company" (RWC).^{[12] [13]}
• July 2002: Telstra purchases PCCW's 40% stake in RWC for A$1.1billion, giving Telstra 100% ownership of CSL.^[14]
• March 2006: CSL & New World PCS merge to become the CSL New World Mobility.^[15] The enlarged group owned the brands CSL, 1010, One2Free and New World Mobility, and was majority owned by Telstra; New World Mobile Holdings was a minor shareholder.
• January 2007: New World Mobile Holdings agrees to sell its quarter stake of CSL New World Mobility to its parent company New World Development, for US$321 million.
• March 2009: CSL launches the international award winning Next G™ network. Next G™ is an all-IP HSPA+ commercial mobile broadband network capable of download speeds up to 21 Mbit/s ^{[16] [17]} and provides the widest coverage in Hong Kong (as at 1 Dec 2011).^[18]
• November 2010: Launches the world's first LTE/DC-HSPA+ network in partnership with ZTE.^{[19] [20]}
• June 2012: CSL and SK Telecom, the largest mobile operator in Korea, launches the world’s first 4G LTE international roaming between their two markets – Hong Kong and Korea.^[21]
• December 2013: CSL launches the first VoLTE (Voice over LTE) network in Hong Kong.^[22]
• December 2013: Telstra and New World Development have agreed to sell CSL New World Mobility to HKT, a listed unit of PCCW for $2.43B USD, essentially selling it back to PCCW. Telstra owns 76.4% of CSL, New World Development owns the rest 23.6%.^[23]
• May 2014: The Communications Authority agree to the sale of CSL, subject to conditions.^[24]
• September 2014: The brand New World Mobility was renamed to Sun Mobile, and owned by HKT and
• December 2014: CSL launches the first LTE Advanced network in Hong Kong.^[25]
• April 2020: Become one of the three operators in Hong Kong to launch 5G network.^[26]

Network

Frequencies used on csl (HKT) in Hong Kong

Frequency	Frequency Width	Protocol	Notes
900 MHz (895~905;940~950)	2*10 MHz	GSM/LTE	3G: 937.4;892.4
1800 MHz (1720~1740;1805~1825)	2*20 MHz	GSM/LTE
2100 MHz	2*15 MHz	UMTS/LTE	3G: 2132.6;1942.6 + 2137.4;1947.4
2600 MHz (2530~2550;2650~2670)	2*20 MHz	LTE	swap spectrum with CMHK ^[27]
2600 MHz (2515~2520;2635~2640)	2*5 MHz	LTE	via Genius Brand Limited (JV of HKT， three hk)
3.3 GHz (3330~3360)	30 MHz
3.5 GHz (3460~3510)	50 MHz
4.9 GHz (4880-4920)	40 MHz

See also

• Sun Mobile, a mobile network operator that is also owned by HKT

External links

• • Official website of CSL Mobile's 1010 brand

Notes and References

1. Web site: CSL Celebrates its 20th Anniversary and Opens a New Head Office in Cyberport. 16 June 2003. CSL Mobile. 2 April 2020.
2. Joint Announcement. 20 December 2013. 28 February 2018. PCCW Limited and HKT Trust c/o HKT Limited. Hong Kong Exchanges and Clearing website. 13–14.
3. News: Mark. Lee. Wong. Ka-chun. PCCW returns to mobiles with $1.94b bid for Sunday. The Standard. Hong Kong. Sing Tao News Corporation . 14 June 2005. https://web.archive.org/web/20060309053535/http://www.thestandard.com.hk/stdn/std/Front_Page/GF14Aa02.html. 9 March 2006. 28 February 2018.
4. News: Telecom: Hong Kong Regulator Clears PCCW Purchase . 6 July 2005. The Asian Wall Street Journal. Hong Kong. 0377-9920. Factiva. Dow Jones & Company.
5. Data in Hong Kong Companies Registry
6. Hong Kong CSL Selects OceanFax FoIP to Replace its Existing Fax Server and Integrate with Exchange and Backend System. Ocean Fax. 30 April 2018.
7. Web site: OFTA - Telecom Milestones. tel_archives.ofca.gov.hk. 2019-10-14.
8. CSL zin2 si6 cyun4 san1 kei5 jip6 jing4 zoeng6. zh:CSL 展示全新企業形象. 15 February 2001. Hong Kong CSL Limited [香港流動通訊有限公司]. zh-hk. CSL Unveils New Corporate Identity. 30 April 2018.
9. CSL unleashes its new vision and logo. CSL Limited. 24 August 2011. 1 February 2012.
10. Web site: Telecom Milestones. OFTA. Office of the Telecommunications Authority. dead. https://web.archive.org/web/20090708134734/http://www.ofta.gov.hk/en/telecom_fact/milestones/main.html. 2009-07-08.
11. Web site: PCCW Fast Facts. PCCW Fast Facts.
12. Web site: Telstra and PCCW Launch Joint Ventures. Telstra and PCCW Launch Joint Ventures. 1 February 2012. https://web.archive.org/web/20120224160127/http://reach.com/news/in_the_news_archive/20010207_Telstra_and_PCCW_Join_Forces_In_Pan.pdf. 24 February 2012. dead.
13. Web site: Telstra, PCCW Finalize Alliance. Telstra, PCCW Finalize Alliance. 1 February 2012.
14. Web site: PCCW ditches mobile ambitions. PCCW ditches mobile ambitions. BBC News. 1 February 2012.
15. Web site: FY2006 Annual Results Announcement. FY2006 Annual Results Announcement. New World Development Company Limited. 1 February 2012. https://web.archive.org/web/20120224053638/http://www.nwd.com.hk/html/download/Presentation/2006ar.pdf. 24 February 2012. dead.
16. Web site: CSL's Next G, the Shining Star in Hong Kong. CSL's Next G, the Shining Star in Hong Kong. ZTE Limited. 1 February 2012.
17. Web site: Murph. Darren. 21Mbps Next G mobile broadband comes to Hong Kong's CSL Limited. 21Mbps Next G mobile broadband comes to Hong Kong's CSL Limited. Endgadget. 1 February 2012.
18. Web site: Corporate Profile. Corporate Profile. CSL Hong Kong. 1 February 2012. https://web.archive.org/web/20120121192045/http://www.hkcsl.com/en/about_us/corporate_profile.jsp. 21 January 2012. dead.
19. Web site: CSL Launches World’s First Commercial Grade LTE/DC-HSPA+ Network. CSL Launches World’s First Commercial Grade LTE/DC-HSPA+ Network. CSL Hong Kong. 1 February 2012.
20. Web site: CSL and ZTE Unveils its Latest UMTS and LTE Developments for its Award-winning Next G Network in Hong Kong. CSL and ZTE Unveils its Latest UMTS and LTE Developments for its Award-winning Next G Network in Hong Kong. UMTS Forum. 1 February 2012.
21. Web site: CSL and SK Telecom launch world’s first 4G LTE international roaming. CSL and SK Telecom launch world’s first 4G LTE international roaming. CSL Hong Kong. 6 July 2012.
22. Web site: 1O1O and one2free turn on VoLTE Network across Hong Kong. 1O1O and one2free turn on VoLTE Network across Hong Kong. CSL Limited. 3 January 2014.
23. Web site: Telstra enters into agreement to sell CSL in Hong Kong. Telstra enters into agreement to sell CSL in Hong Kong. Telstra Corporation Limited. 3 January 2014.
24. Web site: Communications Authority Decides to Give Consent to the Proposed Acquisition of CSL New World Mobility Limited ("CSLNWM") by HKT Limited with Conditions Imposed. Communications Authority Decides to Give Consent to the Proposed Acquisition of CSL New World Mobility Limited ("CSLNWM") by HKT Limited with Conditions Imposed. Communications Authority. 5 May 2014.
25. Web site: csl. customers to be the first in Hong Kong to benefit from the faster LTE-Advanced mobile network technology. csl. customers to be the first in Hong Kong to benefit from the faster LTE-Advanced mobile network technology. HKT Limited. 19 December 2014.
26. Web site: HKT to launch 'True 5G' service Hong Kong on 1 April. 1 April 2020. Telecompaper. 2 April 2020.
27. Web site: Frequency Swap betweenChina Mobile Hong Kong Company Limited andHong Kong Telecommunications (HKT) Limitedin the 2600 MHz BandStatement of the Communications Authority. 19 January 2016. Communications Authority. Hong Kong. 20 October 2019.