CSL is one of the largest mobile communication networks in Hong Kong, and its coverage is one of the best in the industry. Whether it is in urban areas, the New Territories or outlying islands, CSL's 4.5G and 5G signals are relatively stable.
In terms of speed, CSL's 4.5G daily download speed is about 50-150Mbps, and 5G is 200-800Mbps. In MTR carriages, CSL's signal usually remains very good, which is one of its major advantages.
The disadvantage of CSL is that the monthly fee is relatively high. For the same level of plan, CSL is usually 10-20% more expensive than 3HK or CMHK. But if you value network quality more than price, CSL is indeed a good choice.
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