Hong Kong · Telecom, Internet & Apps

csl

One of Hong Kong's longest-established mobile network operators, offering prepaid and postpaid plans with wide coverage.

What it helps with

Data right after landingAirport and 7-Eleven.
Data in mainland ChinaCross-border packs.
eSIM before the tripOnline activation.

About csl

csl is one of Hong Kong's original mobile network operators and now part of HKT (PCCW's telecom arm), known for extensive network coverage including deep in-building and MTR tunnel coverage across the city.

Key Features

Prepaid Tourist SIMs: Short-term data-and-call SIM options aimed specifically at visitors.
Wide Network Coverage: Long-established infrastructure with strong in-building and underground coverage.
5G Availability: 5G network coverage across most of the urban area on supported plans and devices.
Bundled Home Broadband: Options to bundle mobile plans with home fibre broadband through the wider HKT group.

How to Get Started

Buy a csl SIM card at the airport, a csl store, or many convenience stores.
Choose between a prepaid tourist SIM or a longer-term postpaid plan, which requires identity verification.
Insert the SIM and follow the setup instructions for data and calls.
Top up a prepaid SIM online, in-app or at retail outlets as needed.

Before you use it

Sign-up: Under real-name registration, a csl prepaid SIM is registered with a passport before it works.
Good to know: Cross-border SIMs for Hong Kong and mainland China give access to Google and WhatsApp in the mainland.

English available

Frequently Asked Questions

Does csl work with a foreign bank card in Hong Kong?: Not reliably - a foreign card may be declined. Check the notice above, or plan to use a local payment method.
Is csl available in English?: Yes, csl has an English-language interface.
Do I need a local phone number to use csl?: No, an international phone number generally works for csl.
Do I need local ID or residency for csl?: No, csl doesn't require local ID or residency for visitors.
Where can I use csl?: iOS · Android · Web
How much does csl cost?: Tourist SIMs from about HK$88; monthly plans for residents