CSL - Hong Kong

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Carrier
CSL
Country
Hong Kong Flag of Hong Kong View country details


CSL (Hong Kong) uses 2 GSM bands, 2 UMTS bands, and 2 LTE bands. Find out if your unlocked phone or mobile device will work with CSL (Hong Kong). See the tables below for details.

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Carrier website: https://www.hkcsl.com/

CSL Hong Kong is one of the major mobile network operators in Hong Kong, known for its extensive coverage and advanced network capabilities. Here are some key points about CSL Hong Kong's mobile network:

  1. Coverage and Availability:

    • CSL offers widespread 4G LTE network coverage across Hong Kong, ensuring high-quality wireless broadband connectivity throughout the territory.
    • The network also supports 5G, which is a significant enhancement for faster data speeds and lower latency.

  2. Data Services:

    • CSL provides fast 4G LTE mobile network services, supported by a 1,000Mbps optical fiber backhaul capability, which ensures a robust and fast data experience.
    • Additionally, CSL offers Wi-Fi connectivity at over 15,000 hotspots across Hong Kong, providing an extensive range of options for users to stay connected.

  3. Security and Scam Prevention:

    • CSL emphasizes the importance of security and scam prevention. They remind users to be cautious of unsolicited or suspicious text messages and emails, and to never click on links or disclose personal data unless they are sure of the authenticity of the message.

  4. Customer Support:

    • CSL offers a customer service hotline (2512 3123) for any doubts or questions users may have, ensuring that customers can get help when needed.

Overall, CSL Hong Kong's mobile network is designed to provide a comprehensive and reliable service to both residents and visitors, with a strong focus on security and customer support.

Frequency Bands

GSM

Name Interface Description
900 MHz (E-GSM) GSM

CSL Hong Kong uses the GSM 900 MHz (E-GSM) frequency band. The deployment of this frequency band in Hong Kong is not specified.
1800 MHz (DCS) GSM

CSL Hong Kong uses the GSM 1800 MHz (DCS) frequency band. This band operates within the 1.8 GHz frequency range, offering reduced signal interference and greater channel availability compared to the more crowded 900 MHz and 1800 MHz bands used by GSM. The frequency ranges for GSM 1800 are:

  • Uplink: 1710–1785 MHz
  • Downlink: 1805–1880 MHz

This band provides services such as voice communication, text messaging (SMS), and basic data communications, similar to GSM. It is known for its efficient use of the 1.8 GHz band through modulation schemes like Time Division Multiple Access (TDMA) and Frequency Hopping Spread Spectrum (FHSS).

Supported GSM Protocols

Name Generation
GPRS 2.5G
EDGE 2.5G

UMTS

Name Interface Description
B1 (2100 MHz) UMTS

CSL Hong Kong uses the UMTS B1 (2100 MHz) frequency band. The deployment date for this band is not specified.
B8 (900 MHz GSM) UMTS

CSL Hong Kong uses the UMTS B8 (900 MHz GSM) frequency band. This band is utilized for both GSM and UMTS operations, supporting both 2G and 3G services. The deployment of this frequency band is part of CSL's broader network infrastructure, which includes GSM, UMTS, LTE, and 5G services.

Supported UMTS Protocols

Name Generation
UMTS 3G
HSPA+ 3.5G (4G speed)

LTE

Name Interface Description
B3 (1800 MHz +) LTE

CSL Hong Kong uses LTE Band 3 (1800 MHz +) for its LTE network. This frequency band supports both FDD and TDD configurations, making it suitable for dense urban areas. CSL Hong Kong deployed LTE Band 3 in 2010, as part of its initial LTE network rollout.
B7 (2600 MHz) LTE

CSL Hong Kong uses LTE band B7 (2600 MHz) for its 4G LTE services. This band is utilized for providing high-speed data connectivity and supports LTE-A protocols. The deployment of this band is part of CSL's extensive 4G LTE network coverage across Hong Kong, ensuring high-quality wireless broadband connectivity throughout the territory.

Supported LTE Protocols

Name Generation
LTE 4G
LTE-A 4G

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