Staying connected in Hong Kong is straightforward, with options ranging from high-speed physical SIMs available at the airport to instant-activation eSIMs. Since March 2022, real-name registration is legally required for all local SIM cards in Hong Kong, including those used by tourists.

Quick Comparison of Top Carriers
The four major mobile operators are China Mobile Hong Kong (CMHK), csl, 3 Hong Kong, and SmarTone.
| Feature | csl Discover Hong Kong | CMHK Tourist SIM | 3 HK (SoSIM) |
|---|---|---|---|
| Best For | Tourists/Short stays | Coverage & 5G speed | Budget & value |
| Price Range | HK$88 – HK$118 | HK$38 – HK$148 | From HK$33 |
| Data Options | 12GB – 32GB (Tourist) | 5GB – 60GB | High-volume local data |
| Special Perk | Unlimited csl Wi-Fi hotspots | Multi-day passes | Easy refills at Watsons/ParknShop |
Where to Buy
- Hong Kong International Airport (HKG): After clearing customs, you can find kiosks for CMHK, 1O1O (csl), and Travelex. Stores like 1O1O will typically assist with your registration on the spot.
- Convenience Stores: You can pick up prepaid cards at 7-Eleven or Circle K locations throughout the city.
- Online Pre-orders: You can book through platforms like Klook or KKday and pick up your SIM at the airport.
The eSIM Alternative
If your phone is compatible, an eSIM is the fastest way to get online without a physical card.
- Instant Activation: Providers like Holafly, Saily, and Nomad allow you to buy and activate a plan digitally.
- Registration Note: Some international eSIMs that function via roaming may not require the local real-name registration, making them more convenient for quick trips.
Essential Registration Info
To activate a local SIM, you must complete a “Real-name Registration”.
- Insert the SIM to receive a registration link via SMS.
- Upload your ID: You will need a photo of your Passport (for tourists) or HKID.
- Wait for confirmation: Activation usually takes just a few minutes after submission.