Mainland China
Number Service

Upgraded mainland China &
HK 1-Card-2-Number

Seamlessly travel to mainland China without SIM swap

Own both mainland China and Hong Kong numbers yourself. No more call forwarding or SIM swapping
Stay connected with both Hong Kong and mainland China numbers on voice and messaging services. Seamlessly access and use mainland China Apps
Use your mainland China number to text or make calls to mainland China from Hong Kong
Experience clearer call quality with VoLTE HD voice technology

Subscribe now to enjoy below advantages

Open bank account &
activate e-payments in mainland China

Book a ride and contact
driver immediately

Get an e-reservation
and order food delivery

Upgraded 1-Card-2-Number

	Monthly Plan	Standalone
Monthly Fee	$28	$28
Contract Period	24 months	-
Enjoy	Free 20 roaming voice minutes per month^	-

Upgraded 1-Card-2-Number and Travel Data Combo

Subscribing Together	Upgraded 1-Card-2-Number + Mainland China & Macau Travel Data Pass Package Details
Monthly Fee	$126	$136
Contract Period	24 months	12 months
Enjoy	6-month waiver for Upgraded 1-Card-2-Number* (Value $168) + Free 20 roaming voice minutes per month^	3-month waiver for Upgraded 1-Card-2-Number* (Value $84)

^Roaming voice calls include incoming calls in mainland China and outgoing calls to mainland China and Hong Kong.
*6-month / 3-month waiver will be rebated on the 4th, 8th, 12th, 16th, 20th and 24th monthly bills / 4th, 8th and 12th monthly bills separately.

Other Charges

	In Mainland China	In Hong Kong	In Other overseas area
Incoming Call (Per minute)
Using Hong Kong Number	$0.5/min (special offer)	Local Airtime Charge	Standard Roaming Charges
Using mainland China Number	$0.5/min (special offer)	Local Airtime Charge + $0.98/min	Standard Roaming Charges +$0.98/min
Outgoing Call (Per minute)
To Hong Kong number	$0.5/min (special offer)	Local Airtime Charge	Standard Roaming Charges
To mainland China number	$0.5/min (special offer)	IDD + $0.98/min	Standard Roaming Charges
To Other Overseas Area	Standard Roaming Charges	IDD	Standard Roaming Charges
SMS (Per SMS)
Received by Hong Kong number	Free
Received by mainland China number	Free
Sent to Hong Kong number	$0.98/SMS (special offer)	Local SMS Charge	Standard Roaming Charge + Local SMS Charge
Sent to China number	$0.98/SMS + International SMS Charge	International SMS Charge	Standard Roaming Charge + International SMS Charge
Sent to Other Overseas Area	Standard Roaming Charge	International SMS Charge	Standard Roaming Charge + International SMS Charge

Mainland China & HK 1-Card-2-Number is not support video call and MMS.
Customer need to connect to China Unicom's mobile network in mainland China.
The voice minutes and SMS usage incurred by upgraded “mainland China & HK 1-Card-2-Number” will be deducted from the monthly SIM plan (if applicable). Extra charge will be incurred with extra local voice call/ intra-SMS/ inter-SMS/ International SMS usage.

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VoLTE Roaming Service

Customers need to meet the following conditions to use voice calls through overseas partner's 4G LTE network while roaming.

Activate roaming and IDD service
Use compatible mobile phone and iOS/Android version that support VoLTE service (Please check with the relevant mobile phone suppliers for VoLTE-compatible handset and VoLTE function setting)
Under designated destinations and designated networks which has enable VoLTE Roaming Service

VoLTE Roaming Voice Service dialing method

Calling your roamed location / Other Countries	Press + Country Code Area code Telephone No.
Calling Hong Kong	Press + 852 Telephone No.

Terms and Conditions:

VoLTE Roaming Service is only applicable to postpaid 3HK monthly plan. Customer is required to activate Roaming and IDD service and use designated compatible device with specified system version in order to use VoLTE Roaming Service in designated areas with designated networks.
Roaming voice call rates are stated in H.K. dollars. Roaming voice call charges are calculated in 1-minute interval and rounded up to the nearest 1-minute.
VoLTE Roaming Service may not completely cover all locations within the periphery, depending on performance of 4G LTE networks run by local operators. Roaming service will not automatically switch to 3G, or other network operators in locations not covered by a 4G LTE network.
3HK reserves the right to amend the charges and terms and conditions of the Service (including but not limited to designated destinations and designated networks, their coverage, system compatibility and other relevant conditions of the designated networks) and to suspend or terminate any part of the Service at any time without prior notice, especially in case where any roaming partner terminates cooperation with 3HK. 3HK shall have the right of final decision in case of any dispute.

VoLTE Roaming Service FAQ

The "Mainland China & HK 1-Card-2-Number" service is available to existing customers who have been using SUPREME mobile phone postpaid services for two years or more.
Click here to view terms and conditions

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