Mainland China
Number Service
Mainland China HK
1-Card-2-Number
Mainland China HK Macau
1-Card-Multi-Number
Seamless Communication Without Boundary
Enjoy the convenience of keeping just one SIM card with both Mainland and Hong Kong numbers embedded, stay connected between Mainland China and Hong Kong without hassle.

Service Features
  • Auto number switching across borders, hassle free on call forwarding or card swapping
  • Stay connected with both HK & Mainland China numbers on voice and messaging services wherever you are
  • Special rate of $0.98/min at the Special Zones1 for incoming call and outgoing calls to Mainland China and Hong Kong.
Monthly Fee $28
Within Mainland China Special Zones1 Outside Special Zones2
Outgoing Call ($/min)
To HK or Mainland China number
Standard Roaming Rates
Incoming Call ($/min)
To HK or Mainland China number5
Sending SMS ($/msg)
To HK or Mainland China number
Receiving SMS Free
Data Service
MNP (Mobile Number Portability) customers Enjoy 2 months monthly fee waiver3
New customer Enjoy IDD 1968 Mainland China Pack - Free 20 minutes4
  1. The term "Special Zones" used in this content now covers Beijing, Shanghai and Guangdong (Shenzhen, Guangzhou, Fuoshan, Zhuhai, Shaoguan, Dongguan, Zhanjiang, Zhongshan, Zhaoqing, Huizhou, Shantou, Jiangmen, Shunde, Jieyang, Chaozhou, Meizhou, Qingyuan, Maoming, Yangjiang, Heyuan and Shanwei).
  2. The rest of Mainland China other than the Special Zones.
  3. The monthly fee for the "1-Card-2-Number" service will be billed and charged automatically immediately after the first 2-month service fee waiver period (subject to the then prevailing monthly fee for the "1-Card-2Number" service).
  4. 20 free minutes to Mainland China is only applicable to IDD prefix 1968 (by dialing 1968 + country code + area code + telephone number). If a customer uses "+", "Redial" or "001", the standard IDD 001 charges shall apply. IDD free minutes will be offered and calculated on the basis of the actual number of days for which the relevant subscriber subscribes for the "1-Card-2-Number"service, and thus the free IDD minutes offered to the subscriber for the first and last months of the subscription period for the "1-Card-2-Number"service shall be on a pro-rata basis. The unused or expired free minutes for each of the subscription months for the "1-Card-2-Number"service cannot be accumulated for use for the next month but will be cancelled accordingly upon the expiry of each subscription month. This 20 free minutes offer will be terminated simultaneously upon the termination of the "1-Card-2-Number" service.
  5. An additional charge of $0.98/min will be applied to all incoming calls to the secondary number of a customer when he or she is then located in Hong Kong or using the mobile network other than the China Unicom network in Mainland China or using the roaming service overseas.
FAQ
In response to the latest epidemic prevention measures in Mainland China, "Telecommunication Data Based Travel Itinerary Card" has been terminated with effect from 13 December 2022. 3HK will no longer provide "Telecommunication Data Based Travel Itinerary Card Authorization Service", while "Mainland China Number Service" or "1-Card-2-Number" service would not be affected.
Click here to view terms and conditions
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