5G Greater China 365-day Data Prepaid SIM card (12GB)
  • 12GB Greater China Data Usage^
  • 2000 minutes local airtime
  • Registration not required. For your instant usage upon purchase
  • Tethering is supported 

^When data usage reached 12GB, data service will be automatically terminated, customer can refill the SIM card in order to re-subscribe the package and continue using data service.
• Enjoy extra free 3GB data usage upon activation on or before December 31 2022

Starter Pack

Face Value Stored Value Validity Period
$1581 $1581 365 Day2
*From 23 Sep 2021, the face value & stored value have been changed from $198 to $158, yet the old packing may still show $198, but it does not affect the actual usage.
  1. 5G mobile data usage will be effective upon SIM activation. All stored value will be deducted accordingly.
  2. Subject to the expiry date as printed on the SIM Cardholder, mobile data service is valid from the next day upon activation to the 365th day 23:59 (Hong Kong time).
  3. If the package validity period is longer than the prepaid SIM card validity period, the service will be suspended without prior notice when the SIM card validity expires. Customers are required to refill the SIM card to extend the validity in order to re-activate the service.

Data Package3,4,6,8


Maximum Data Volume

Local Airtime




Hong Kong Local Data Package

$68 5GB 2000 Minutes 365 Days *103*100*26#


$98 10GB *103*100*24#

20GB Local and 3GB Mainland China

$148 30GB *103*100*25#
$228 50GB *103*100*23#
$238 70GB *103*100*34#

Mainland China & Hong Kong Data Package

$108 5GB *103*100*29#
$168 15GB *103*100*30#
$378 30GB *103*100*31#
$498 50GB *103*100*32#

Mainland China, Hong Kong, Macau & Taiwan Data Package

$158 12GB *103*100*27#

Mainland China & Hong Kong Data Package

$358 30GB N/A 180 days *103*100*47# *103*11#
$548 60GB N/A 180 days *103*100*48#

Remarks: After subscribing to any 365 days data package, the validity of your Prepaid SIM Card will subject to either the original SIM validity or validity of the data package, to which has a longer period.

5G Data Service Subscription Cancellation
Apply for 5G data service 9,13 *104*01# *104*02#

Remarks: Customers who do not have access to 5G data services are required to subscribe to the service by pressing the subscription USSD code. Customers who have 5G access can unsubscribe the 5G data service by pressing the cancellation USSD code, data services can be provided on 4G/3G/2G networks afterwards.

Service Charges
Local Airtime Charge12 24-hr Flat Rate: $0.1/min

Short Message Service11

  • Local Intra-network SMS
  • Local Inter-network SMS
  • International SMS to Mainland China
  • International SMS



  • $0.3/SMS
  • $0.7/SMS
  • $1.5/SMS
  • $1.8/SMS

*Remark:  Effective from 12 July 2021, the charge of local intra SMS will be adjusted to $0.3 each.

Multimedia Messaging Service (MMS)11

  • Send MMS
  • Surcharge on sending International MMS
  • $0.5/SMS
  • $3/SMS
  1. Subscription of any new data package will reset the data usage and local airtime immediately.
  2. All data packages cannot be co-existed.
  3. Only mobile data, local airtime and SMS services are supported, no other value-added service.
  4. Mobile data service is only accessible in the regions listed in the data packages, but not in other area.
  5. All mobile data usage consumed via designated operators ( Hong Kong : CMHK) during the service period (starting from the next day upon activation to the 365th day Hong Kong time 23:59) will be deducted from this card. CMHK reserves its absolute right to change the operator at any time without prior notice to the customer.
  6. 12GB Mainland China, Hong Kong, Macau and Taiwan shared data usage is included in this card. When the cumulated data usage for the package reaches the upper limit during the validity period, data service will be suspended. If further data service is needed, customers are required to re-subscription after cancelling the service, any unused usage in the existing data package will be forfeited.
  7. In those Hong Kong areas where the 5G networks are not available, CMHK will provide the service under 4G/3G/2G network. The use of designated handset model(s) or device(s) are required for using 5G network service.
  8. Actual data transmission speed may vary due to many factors, including but not limited to network provider, network usage, handset model, setting (including handset hardware and software), upload/download content and other external factors.
  9. Please check if applicable handset models are used to receive the content, and if the recipient's network is compatible. Otherwise customer could be charged even if the transmission is unsuccessful.
  10. When call minutes accumulated up to the available usage, thereafter local airtime charge will be calculated on a pay-as-you-go basis.
  11. 5G data service is only available in Hong Kong and Mainland China, but not in other area.

***If Mobile Duck Prepaid Card cannot activate normally, please contact or replace directly with dealer by bringing along with the packing & prepaid SIM card.

Distribution Channels

Prepaid SIM Card is available at dealer shops.

For details locations, please contact our 24-hour Customer Care Hotline 2211 7188

Refill Amount and Validity Period

Only applicable to online refill 
Recharge Amount(per single recharge transaction) Validity*
$50 - $99 180 days
$100 - $199
$200 - $299 365 days
$300 or above 365 days

*Every time your Prepaid SIM Card is refilled, the stored value validity period will be automatically extended starting from the date of refill. If the original validity period is longer, then the original validity period will prevail.

Terms & Conditions

  • The use of the individual service shall be subject to such terms and conditions as stated on the relevant service leaflet or on CMHK relevant web page.
  • The SIM Card is non-refundable and non-returnable.
  • The SIM Card should be activated before the stipulated expiry date, otherwise it will be invalid automatically.
  • Where a SIM Card has expired, or where service has been suspended for more than 30 days due to whatever reasons, or where service has been terminated due to whatever reasons, the remaining stored value (if any) shall be non-refundable and non-transferable.
  • The SIM Card shall be valid for 365 days starting from the next day upon activation date, subject to the activation taking place within the stipulated validity period.
  • CMHK will not be liable for any damages, however arising, of the SIM Card or responsible for repairing and making good therefor.
  • The mobile number is assigned randomly and Customer cannot return, choose or request to change to other mobile numbers. Customer will not be able to keep the allocated mobile number once the SIM Card has expired, or where its service has been suspended for more than 30 days due to whatever reasons or where its service has been terminated due to whatever reasons.
  • Calculation of data usage duration and volume is based on the network report of CMHK. In case of dispute, the records of CMHK are conclusive and binding. All calculations are subject to such prevailing rates or tariff as imposed by CMHK from time to time.
  • CMHK is entitled at their full discretion to temporarily suspend any or all of the Services without notice to the Customer for the purpose of preventing any improper or abnormal use of CMHK's network or resources, fraudulent or deceptive acts until CMHK is satisfied that the Customer has ceased such acts or the relevant investigation has been completed. CMHK may assess abnormal usage based on comparisons to the usage patterns and levels of CMHK’s other customers, and/or based on whether such usage level is considered to have affected our other customers' ability to optimally use the same network or service.
  • CMHK reserves its absolute right to change the terms and conditions relating to the use of the SIM Card including but not limited to the data usage rate at any time without prior notice to or consent from the Customer.
  • The above information and rates are subject to change without prior notice.
  • Any change or amendment will be published on CMHK Website.
  • For the details of the Terms and Conditions, please click here.

User Guide

Click here to view the details of user guide.