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| Company type | Subsidiary |
|---|---|
| Industry | Mobile communication |
| Founded | 1980 (first incorporation) 2014 (the merger with PCCW Mobile) |
| Headquarters | |
Area served | Hong Kong |
| Brands |
|
| Parent | HKT |
| Website | hkcsl 1010 clubsim |
CSL Mobile Limited (Chinese:香港移動通訊有限公司;Cantonese Yale:Hēunggóng yìhduhng tūngseun yáuhhaahngūngsī) is aHong Kong telecommunications company, which operates mobile network brands of "csl", "1O1O" and "Club SIM". CSL is a subsidiary ofHong Kong Telecom (HKT) and wasHong Kong's firstmobile communications operator established in 1983,[1] and also the first network to launch the world’s first dual band4G LTE network withDC-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,[2] and then Cable & Wireless HKT CSL Limited from 1999 to 2001,[2] and then Hong Kong CSL Limited from 2001[2] (it became a subsidiary of CSL Limited[3][non-primary source needed] after the formation of CSL New World Mobility), CSL Limited (formerly known asNew World PCS)[2] and CSL Mobile Limited; The currentlegal person of the brand, CSL Mobile Limited, was formally known asPCCW Mobile HK Limited.[2] It was the result of the merger of the brands CSL and PCCW Mobile.
In the 1990s, CSL was a company ofPCCW (formerlyHKT). In 2002, PCCW sold CSL.[4] In 2005, PCCW re-entered themobile network operator business by acquiringSUNDAY[5][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 andNew World Mobility. In 2014, the legal person ofPCCW Mobile was renamed into CSL Mobile Limited.[2] However, it used the brand CSL instead.
CSL was an abbreviation forCommunicationServicesLimited[6][7] and their original branding of "Create aSimpleLife".[8] The CSL brand, logo and corporate colour (green) were all updated in August 2011[9] and again in recent year.
| 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 | 5G NR | |
| 4.9 GHz (4880-4920) | 40 MHz |
| HKT |
| ||||
|---|---|---|---|---|---|
| HK Television Entertainment | |||||
| Financial Services | |||||
| Others | |||||
| Mobile network operators (MNOs) |
|  | |
|---|---|---|---|
| Major mobile virtual network operators (MVNOs) | |||
