Roaming & IDD Service
  • Can use roaming data, voice, SMS and local IDD001/1968 service.
  • Customers who use credit card or bank autopay to settle SUPREME monthly bill, can simply press *100# for registration. SMS confirmation will be received upon successful activation of Roaming & IDD Service.
#Features of "Full Roaming Service" is equivalent to "Roaming & IDD Service"
"Smart Roaming Firewall" function (no application is required)
When your location is close to the border, your phone may connect to a roaming network. SUPREME's "Smart Roaming Firewall" function will automatically identify those non-roaming usage and waive the unnecessary roaming charges for you. Term & conditions apply. Click here for details.
Data Roaming
5G Roaming Service
5G roaming service is now available in Mainland China, and we will continue to expand the coverage to more destinations. Customers only need to meet the following conditions to experience 5G high speed data roaming.
  • Subscribe SUPREME 5G service monthly plan
  • Activate roaming and IDD service
  • Use 5G roaming compatible mobile phone and iOS/Android version (Please check with the relevant mobile phone suppliers)
  • Under designated destinations and designated networks (Click here for details)
Q: What are the charges for 5G roaming service?
A: There is no additional charge for 5G roaming service. If customer meets the above conditions, they can enjoy 5G roaming service at where available, data roaming charges will be charged based on the current standard roaming rates or applicable data roaming plans. Please note that 5G roaming service depends on the 5G network coverage of the local network provider. If there is no 5G network coverage, roaming service will be available through other network standards.

Plan Features
Roam-in-Command One Pass with infinity data, simply activate once to enjoy seamless connection for each trip.
Mainland China & Macau 3-Day Pass Freely use travel data and voice calls
Data Roaming Daily Pass
RoamLite Pass
Fixed daily charge
Greater China Monthly Plan Share data in Mainland China, Hong Kong, Macau and Taiwan. Keep using social media apps just like in Hong Kong
Please refer to below for other data roaming plan:
Europe 5/10-Day Pass
Customers without any data roaming plan will be charged at standard roaming charges. Please click here for details.


Check activated data roaming plans:
Login My Account or click "Travel Data" in SUPREME App.
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:
  1. VoLTE Roaming Service is only applicable to postpaid SUPREME 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.
  2. 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.
  3. 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.
  4. SUPREME 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 SUPREME. SUPREME shall have the right of final decision in case of any dispute.
VoLTE Roaming Service FAQ
Roaming Voice Call and SMS
Voice Call
Calling Hong Kong/Other Countries Press
+
Country Code
Area code
Telephone No.
Calling your roamed location
Receive Call Press
Receive Call
button
Use Home Direct Line Service to call back to Hong Kong Press
**132*
Hong Kong Telephone No.
#
SMS
Send SMS to Hong Kong telephone number Press
Hong Kong Telephone No.
, then type your text message,
then press
Send
button
Send SMS to a local number / Other countries' phone number Press
+
Country Code
Area code
Telephone No.
,
then type your text message, then press
Send
button
Click here for the coverage and charge of Roaming Voice Call and SMS service.
Roaming Management Service
International Call Forward and Roaming Voicemail
While roaming, you can choose one of the following types of call forward features to divert your incoming calls to a local fixed line or mobile phone number of your roaming destination, or use roaming voicemail, to keep your un-answered calls in your voice mail box.
Call Forward Type Setting Service Charges
Unconditional Call Forward **21*
001
Country Code
Area Code
Telephone No.
#
IDD 001 charges (from HK to the forwarded no.)
Unreachable Call Forward (turn off the phone) **62* IDD 001 charges (from HK to the forwarded no.)
Unreachable Call Forward (out of coverage) Roaming incoming call charges + Roaming outgoing call charges (from roaming country to the forwarded no.)
Busy Call Forward **67* Roaming incoming call charges + Roaming outgoing call charges (from roaming country to the forwarded no.)
No Answer Call Forward **61*
Cancel International Call Forward ##21#  
Retrieve Voicemail **132**32#
(4G LTE / 3G Customer)
Use Home Direct Line to retrieve voice mail while travelling abroad and no need to enter your mobile phone number and password.
Home Ringback Tone
Callers will hear the same Hong Kong ringback tone when overseas. Just activate and deactivate the service by using the below short codes.
  Activation Deactivation Interrogation
Chinese **139# ##139# *#139#
English **139*# ##139*# *#139*#
Service charge: HK$10 per day
Click here to view Roaming Management Service terms and conditions
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