Apple Watch International Roaming: Stay Connected Overseas
The Apple Watch International Roaming Service enables your compatible Apple Watch to maintain cellular connection to the 1O1O network—without your iPhone—even when you travel abroad to designated VoLTE roaming areas. Enjoy local voice and data sharing, plus unlimited yearly roaming data.
Apple Watch International Roaming enables your Apple Watch to stay connected to 1O1O’s network without Wi-Fi or having your phone with you – even when overseas.
5G Network Support #
Enjoy enhanced speed and performance with our independent 5G network, delivering faster data speeds and lower latency when available.
One Number Convenience
Use the same phone number on your Apple Watch as your iPhone, eliminating the need for a separate number.
Share Allowances
Your Apple Watch shares your mobile plan’s data and voice-minute entitlements for efficient usage.
Flexibility & Freedom
Leave your phone behind! Stay connected without it, whether you're at the gym or stepping out for a short trip.
Worry-Free Overseas Travel
Enjoy unlimited roaming data yearly in designated VoLTE roaming service areas, keeping you connected while traveling abroad.
Note:
To receive SMS, MMS, or push notifications from third-party apps on your Apple Watch with cellular, your paired iPhone must be powered on and connected to Wi-Fi or cellular.
#Requires compatible specified devices and subscription to designated services.
Apple Watch International Roaming Service Charge
| Service | Service Charge | |
|---|---|---|
| 5G Network | 4G LTE Network | |
|
International Roaming Service
(Includes: One Number Service and unlimited roaming data usage yearly in designated areas) |
Promo Price: HK$18/month*
+ HK$150/year (Regular HK$28/month) |
HK$18/month*
+ HK$150/year |
* The Promotion offer is valid from 19 September 2025 to 31 December 2026.
Apple Watch eSIM Subscription Flow
STEP 1
From iPhone:
- Open 'Watch' app to pair your Apple Watch
- Tap 'My Watch' from bottom left of 'Watch' app
- Tap 'Mobile Data'
- Tap 'Set Up Mobile Data'
- Tap 'Select My Plan'
STEP 2
- Type in password of your mobile number
- Tap 'Continue'
STEP 3
- Type in one-time password
- Tap 'Submit'
STEP 4
- Select Your Device
- 5G-compatible or 4G LTE-compatible Apple Watch - Tap 'Next'
STEP 5
- Select “Apple Watch International Roaming Service”, service includes:
- local voice and data shared with mobile service plan, and
- unlimited data usage yearly in VoLTE roaming service designated areas; Standard roaming charge will be applied to using roaming voice call - Read and accept the “Terms and Conditions”
- Tap “Submit”
STEP 6
- Wait for the 'Activation done' message
- Tap 'OK' when finish'
STEP 7
- Return to the 'Watch' app
- If you see 1O1O / csl
icon next appears under
DATA PLAN then your Apple Watch is successfully connected.
Apple Watch eSIM訂購流程
步驟1
從iPhone:
- 打開 “Watch” 應用程序，以配對您的 Apple Watch
- 點擊 “Watch” 應用程序左下角的 “我的手錶”
- 點擊 “流動網絡”
- 點擊 “設定流動網絡”
- 點擊 “訂購服務”
步驟2
- 輸入您的手機號碼的密碼
- 點擊 “下一步”
步驟3
- 輸入驗證碼
- 點擊“提交”
步驟4
- 選擇您的裝置
- 支援5G 或4G LTE的Apple Watch - 點擊“提交”
步驟5
- 選擇 “家人共享設定服務”
- 與主號碼共享通話分鐘及流動數據 - 閱讀並接受 “服務條款及細則”
- 點擊 “下一步”
步驟6
- 選擇手錶的流動電話號碼或可選擇刷新流動電話號碼
- 閱讀並接受 “服務條款及細則”
- 點擊 “提交”
步驟7
- 等待 “成功訂購” 信息
- 完成後點擊 “確認”
步驟8
- 返回到 “Watch” 應用程序
- 如果您看到流動數據計劃下出現 csl 圖標 icon next appears under
DATA PLAN then your Apple Watch is successfully connected.
Basic Requirements & FAQs
| Device | 5G Network | 4G LTE Network |
|---|---|---|
| iPhone | iPhone 11 or later and running on iOS 26 or newer | iPhone 6s or later and running on iOS 14 or newer |
| Apple Watch | Apple Watch Series 11 / SE 3 / Ultra 3 (GPS + Cellular) and running on WatchOS 26 or newer | Apple Watch Series (4th to 10th generation) / SE (1st and 2nd generation) / Ultra (1st and 2nd generation) (GPS + Cellular) and running on WatchOS 7 or newer |
Note: To check if your service plan is eligible, dial *163# using the iPhone that you want to use with your Apple Watch. You will receive an SMS with eligibility information.
When a customer starts the Apple Watch eSIM subscription process via Apple Watch, the system will check whether the customer has completed Real-name Registration. If not completed, the system will send the customer a text message through their mobile number. By clicking on the SMS link, the customer can submit his/her identity documents to complete Real-name Registration. Upon successful registration, he/she can subscribe to the Apple Watch eSIM immediately. If personal info needs updating before submitting Real-name Registration, review results will be sent by SMS or email within 3 working days.
Please note you need to enter a one-time password to verify your identity as part of the self-subscription flow. For any enquiries, simply call our 24-hour Customer Service Hotline on 2888 1010.
If you have not completed Real-name Registration, please watch the following tutorial:
Yes. For switching from Apple Watch to Apple Watch, please go to iPhone "Watch" Apps to update pairing.
Yes. If you have already registered for IDD service, you can make international calls using IDD service on your wearable device.
Yes. When you travel to designated VoLTE roaming countries or regions, you can enjoy unlimited roaming data yearly (please check the details of your service for fair usage policy). Standard roaming charge will be applied to using roaming voice call.
Yes. You can call "988" as usual via your wearable device to check your voicemail.
Each mobile number is eligible for up to 4 "Apple Watch International Roaming Service" subscriptions, and only one paired Apple Watch is enabled per subscription at a time. If you need to switch, please use the "Watch" app on your iPhone to update pairing.
No. If you change to use another supported iPhone with the same mobile number, simply pair your new iPhone with your wearable device to continue enjoying the service.
When your iPhone is not nearby, your Apple Watch connects to the cellular network automatically. Check the Control Center (by pressing the side button); if the cellular button on the top left turns green, your Apple Watch is successfully connected. The green bars indicate signal strength.
International Roaming Terms and Conditions
- The Offer is valid from 19 September 2025 to 31 December 2026, both dates inclusive (the “Promotion Period”).
- In order to qualify for the Offer, you must subscribe to a designated 1O1O / csl / Club Sim mobile service plan (“Service Plan”), and use a 5G-compatible Apple Watch Series 11 / Apple Watch SE 3 / Apple Watch Ultra 3 (GPS + Cellular) or later models running on WatchOS 26 or newer and use a compatible iPhone 11 or later models running on iOS 26 or newer.
- During the Promotion Period, customers can subscribe to the Service at a promotional price HK$18 per month and HK$150 per year (with no commitment period). This service is available through the Watch app on your iPhone, over the phone via our 24-hour customer service hotline, or in person at any 1O1O Center or csl shop with one of our sales representatives.
- After the Promotion Period, customers can continue to enjoy Apple Watch International Roaming Service (the “Service”) at regular price of HK$28 per month and HK$150 per year. The Service is automatically renewed until it is cancelled. If you want to terminate the Service during Promotion Period, 7 days prior notice is required before the end of Promotion Period. If you decide to terminate the Service after the end of Promotion Period, 30 days prior notice is required.
- The Offer is subject to availability while stocks last.
- Unless otherwise stated, the Offer cannot be used in conjunction with any other promotional or discount offer, and are non-transferable or exchangeable for cash or other products.
- The Offer is subject to further terms and conditions. For details, please visit https://www.1010.com.hk/apple_watch#intl_watch or https://www.hkcsl.com/en/apple-watch-international-roaming-service-activation-and-support/.
- The General Terms and Conditions of CSL Mobile Limited (“CSL”) apply (https://www.1010.com.hk/terms_and_conditions or https://www.hkcsl.com/en/service-terms-and-conditions/) to the relationship between CSL and you in respect of the mobile service.
- CSL reserves the right to vary or cancel the Offer and/or amend these Terms & Conditions at any time without notice.
- If there is any inconsistency between the Chinese and English versions of these terms and conditions, the English version shall prevail.
- In order to qualify for the Service, you must subscribe to a designated 1O1O / csl / Club Sim mobile service plan (the “Service Plan”) and:
- For 4G LTE-compatible Apple Watches, who (i) have activated IDD and Roaming service, (ii) use an Apple Watch Series (5th to 10th generation) / Apple Watch SE (1st and 2nd generation) / Apple Watch Ultra (1st and 2nd generation) (GPS + Cellular) running on WatchOS 9.1 or newer (the “Device”); and (iii) use a compatible iPhone 8 or later models running on iOS 16.1 or newer.
- For 5G-compatible Apple Watches, who (i) have activated IDD and Roaming service, (ii) use an Apple Watch Series 11 / Apple Watch SE 3 / Apple Watch Ultra 3 (GPS + Cellular) running on WatchOS 26 or newer (the “Device”); and (iii) use a compatible iPhone 11 or later models running on iOS 26 or newer.
- Access to the Service is subject to the payment of both the (a) monthly fee (the “Monthly Fee”) and (ii) annual fee (the “Annual Fee”) as stated in your application. The Monthly fee and Annual fee are subject to change from time to time without prior notice.
- Local Data usage of the Service will be deducted from the iPhone Service Plan.
- You can make or receive calls from the Device using the mobile number of your iPhone.
- The Service is applicable to mobile data roaming and applies to mobile data roaming usage such as Internet Browsing, Roaming MMS, WAP and audio or video streaming but not support VoIP, BitTorrent, Peer to Peer file sharing (such as FTP file sharing and webcam applications), Peer Casting type applications (such as PPLive and PPStream), VPN Tunnel service, corporate e-mail service or any commercial promotion activities or any means which may be harmful or adversely affect our network or other customers. The mobile data roaming available for the Service is 500MB per month, after which the data transmission speed will be capped at 128kbps. Please note the actual speed and usage experience depends on applicable roaming networks.
- Standard roaming charges are applied to using voice, call forwarding, sending SMS, and MMS services outside of Hong Kong. For details, please visit https://www.1010.com.hk/en/business_roaming_mass or https://www.hkcsl.com/en/roaming-coverage-and-charge/
- For a 5G network connection, Apple Watches that support 5G are required to use the 5G data service. 5G local data service may not completely cover all locations within the service area, depending on performance of local 5G network. Local data service will automatically switch to 4G LTE, or other technologies, in locations not covered by a 5G network.
- The Service may not completely cover all locations within the periphery, depending on the performance of VoLTE networks run by local operators. For details, please visit https://www.1010.com.hk/en/volte_roaming or https://www.hkcsl.com/en/volte-roaming/
- You can only use the Service for one Device at a time. If you want to connect to another Device, you can connect your Device to the Service via “Watch” app on your iPhone. Alternatively, you can purchase an additional Service to use with the new Device on your iPhone.
- You can apply for up to 10 device services for your primary MUP. However, you are further subject to the maximum number of eSIM for each category of service as set out below.
Service Maximum number of eSIM
you can apply by
categories of serviceApple Watch One Number Service;
Apple Watch International Roaming Service;
Other Wearables One Number Service4 Apple Watch Family Sharing Setup Service 5 iPad eSIM Data Sharing Service 5 - If you terminate the Service, you are required to terminate the Service by calling our customer service at least 30 days before your next bill date. If the Service is terminated before the expiry of Minimum Commitment Period (if any), Early Termination Charge shall apply.
- Monthly Fee and Annual Fee are both non-refundable. Upon termination, any unused entitlement shall be forfeited forthwith. For avoidance of doubt, the Annual Fee is payable at the beginning of each 12-monthly period. If the Service is terminated before the expiry of such 12-monthly period, you will not receive any refund of the Annual Fee.
- The Service will be terminated automatically upon termination of your iPhone Service Plan.
- The Service is subject to the Mobile Service Agreement of CSL Mobile Limited, please visit https://www.1010.com.hk/terms_and_conditions or www.hkcsl.com/en/mobile-service-agreement-consumer-customers/.
- If there is any inconsistency between the Chinese and English versions of these terms and conditions, the English version shall prevail.
- In order to qualify for the Service, you must subscribe to a designated csl / 1O1O / Club Sim mobile service plan (the "iPhone Service Plan") who (i) have activated IDD and Roaming service, (ii) use an Apple Watch Series 5/ Apple Watch SE (1st generation)/ Apple Watch Ultra (GPS + Cellular) or later running on watchOS 9.1 or newer (the "Device"); and (iii) use a compatible iPhone 8 or later running on iOS 16.1 or newer.
- Access to the Service is subject to the payment of both the (a) monthly fee (the "Monthly Fee") and (ii) annual fee (the "Annual Fee") as stated in your application. The Monthly fee and Annual fee are subject to change from time to time without prior notice.
- Local Data usage of the Service will be deducted from the iPhone Service Plan.
- You can make or receive calls from the Device using the mobile number of your iPhone.
- The Service is applicable to mobile data roaming and applies to mobile data roaming usage such as Internet Browsing, Roaming MMS, WAP and audio or video streaming but not support VoIP, BitTorrent, Peer to Peer file sharing (such as FTP file sharing and webcam applications), Peer Casting type applications (such as PPLive and PPStream), VPN Tunnel service, corporate e-mail service or any commercial promotion activities or any means which may be harmful or adversely affect our network or other customers. The mobile data roaming available for the Service is 500MB per month, after which the data transmission speed will be capped at 128kbps. Please note the actual speed and usage experience depends on applicable roaming networks.
- Standard roaming charges are applied to using voice, call forwarding, sending SMS, and MMS services outside of Hong Kong. For details, please visit https://www.1010.com.hk/en/business_roaming_mass.
- The Service may not completely cover all locations within the periphery, depending on the performance of VoLTE networks run by local operators. For details, please visit https://www.1010.com.hk/en/volte_roaming.
- You can only use the Service for one Device at a time. If you want to connect to another Device, you can connect your Device to the Service via "Watch" app on your iPhone. Alternatively, you can purchase an additional Service to use with the new Device on your iPhone.
- You can apply for up to 10 device services for your primary MUP. However, you are further subject to the maximum number of eSIM for each category of service as set out below.
Service Maximum number of eSIM
you can apply by
categories of serviceApple Watch One Number Service;
Apple Watch International Roaming Service;
Other Wearables One Number Service4 Apple Watch Family Sharing Setup Service 5 iPad eSIM Data Sharing Service 5 - If you terminate the Service, you are required to terminate the Service by calling our customer service at least 30 days before your next bill date. If the Service is terminated before the expiry of Minimum Commitment Period (if any), Early Termination Charge shall apply.
- Monthly Fee and Annual Fee are both non-refundable. Upon termination, any unused entitlement shall be forfeited forthwith. For avoidance of doubt, the Annual Fee is payable at the beginning of each 12-monthly period. If the Service is terminated before the expiry of such 12-monthly period, you will not receive any refund of the Annual Fee.
- The Service will be terminated automatically upon termination of your iPhone Service Plan.
- The Service is subject to the Mobile Service Agreement of CSL Mobile Limited, please visit www.hkcsl.com/en/mobile-service-agreement-consumer-customers/.
- If there is any inconsistency between the Chinese and English versions of these terms and conditions, the English version shall prevail.