The advent of 5G mobile Internet connectivity will see csl making the everyday lives of customers smarter and healthier, as well as more convenient and enjoyable.

HKT has acquired spectrum in the 3.3GHz, 3.5GHz, 4.9GHz and 26/28GHz frequency bands, a capability that will combine with our extensive infrastructure to get the very best out of 5G technology – all to the benefit of csl customers.

Date of acquisition
in 2019
Band Frequency acquired
March 27
High-band spectrum 26/28GHz
October 14
October 23
Mid-band spectrum
(golden band spectrum)
November 6

5G characteristics

Ultra high speed

20 times faster than maximum 4G download speeds.

Massive connectivity

The number of smart devices that can be connected simultaneously is more than 100 times greater than 4G can achieve.

Ultra-low latency

Latency of less than one-thousandth of a second.

Three major 5G frequency bands

Global and Hong Kong 5G spectrums are broadly divided into three different frequency bands – high, medium and low. Each range comes with completely different characteristics and advantages.

High-band spectrum


UHF broadband for ultra-high transmission speed.

Deployment in the environment

This is suitable for indoor and high-density environments, and provides ultra high-speed connectivity for multiple users simultaneously.

Mid-band spectrum
3.3GHz, 3.5GHz
and 4.9GHz


Considered 5G’s “golden band spectrum”, mid-band provides high speeds and wide coverage.

Deployment in the environment

5G service will be rolled out to many Hong Kong districts.

Low-band spectrum
2GHz and below


Very high penetrating signal power to suit Hong Kong’s proliferation of high-rise buildings.

Deployment in the environment

Use high and medium frequencies to maximize 5G coverage.

Source: Information and figures on 5G are referenced from the documents listed by GSM Association. More details can be found in

Some figures quoted are theoretical value, actual performance may vary due to location, spectrum allocated, network resource availability and the compatible handset’s capability, etc.

5G network coverage

The 5G network coverage map is for illustration purpose, some locations may not be covered.

Our truly genuine 5G network now covers 90% of outdoor areas% in Hong Kong, as well as 99.5%# of the Golden Bowl and main business district. Our 5G network also covers the interiors of Hong Kong International Airport and major shopping malls.

We are the first mobile operator to provide seamless 5G coverage along six major MTR lines*, which means passengers are able to enjoy ultra-fast 5G service on concourses and platforms at more than 50 stations, as well as onboard trains. csl will continue extending 5G overage throughout the rest of the MTR network including West Rail Line, Tung Chung Line, Airport Express Line, South Island Line, Disney Line and High Speed Rail by the end of 2020.

Customers simply need to use a 5G mobile device compatible with 4.9GHz to reap the extraordinary speed and other benefits of csl’s 5G network at locations such as the Hong Kong Science Park and certain areas of Tai Po and Ma On Shan.

Our 5G network was also field tested by trade press publications1&2, which reported satisfactory results in and outdoors. csl’s 5G capability proved significantly faster than 4G service and performed well in large crowded shopping malls such as The Gateway and K11 MUSEA.

csl will continue extending 5G coverage throughout Hong Kong, in step with launch of new 5G smartphones this year, while making the many wonders of this amazing new mobile broadband technology readily available to customers.

1. PCM online version (published on 8 Oct 2020)
2. online version (published on 22 Apr 2020)

% Network coverage is based on our test results on major roads as of October 12-16, 2020.

# With regard to our testing results as of October 12-16, 2020 , Golden Bowl and main business district refer to outdoor areas in Kowloon (south of Lung Cheung Road to Tsim Sha Tsui) and the northern part of Hong Kong Island (Sheung Wan to Tai Koo).

* Our 5G network covers major MTR stations according to test results conducted on October 16, 2020.

Some figures quoted are of theoretical value. Actual performance may vary depending on location, spectrum allocated, availability of network resource, a compatible handset’s capability and other factors.