eSIM service - SUN Mobile

SUN Mobile eSIM Service Guide

eSIM and Number Share (eSIM) Service Application and Usage Guide

Details

eSIM
Service Application and Usage Guide

Details

Number Share (eSIM)
Service Application and Usage Guide

What is eSIM?

eSIM is an embedded electronic SIM card inside your device that allows you to activate mobile communication services on your phone or smart device without a physical SIM card. If your smartphone or eSIM-supported device meets the requirements, you can simply scan a QR code to download and activate the eSIM, enabling both voice and data services. New customers joining SUN Mobile can choose to use the eSIM service for free, easily experiencing a cardless communication era.

New Customer Offer
First-time applicants can enjoy a free choice of using eSIM — experience the card-free communication era with ease.

Details

Supported eSIM Devices
List of supported eSIM models

Details

Simple Activation
Just scan the QR code to activate the service

eSIM Service FAQs
- Q1: Which devices support eSIM?
  A1：Please refer to the "Supported eSIM Devices" list.
- Q2: As an existing customer, how do I apply for and activate eSIM?
  A2：
  Step 1. Bring your valid Hong Kong ID to a SUN Mobile store to apply for the replacement of your physical SIM card with an eSIM. Handling fees apply (please see https://www.sunmobile.com.hk/eng/customerservice/199.jhtml for details under "Replacement of SIM Card" fees).
  
  Step 2. After successful application, you will receive an eSIM QR code to scan and download using your eSIM-capable device.
  
  Step 3. Ensure your device is connected to Wi-Fi or mobile data during download. Your physical SIM card will be deactivated approximately 15 minutes after activation.
- Q3: What happens to my eSIM if I reset my phone?
  A3：When resetting or restoring factory settings, you must choose the "Keep eSIM" option. Otherwise, your eSIM data will be deleted and you will need to visit a store to reissue it, paying the applicable fee.
- Q4: Will using eSIM affect my current mobile service?
  A4：After activation, your physical SIM card will be deactivated, and all mobile services will switch to the eSIM.
- Q5: Can I use the same eSIM on multiple devices?
  A5：No. Once scanned, an eSIM is bound to the device and can only be used on that single device.
- Q6: What if I change my phone?
  A6：You need to reapply for a new eSIM at a SUN Mobile store and bind it to your new device. The eSIM on the old device will become invalid.
- Q7: Are there any extra fees for using eSIM?
  A7：Free replacement for new activations, but re-issuance or re-applications of eSIM require a handling fee. Please check https://www.sunmobile.com.hk/eng/customerservice/199.jhtml for details.
- Q8: What should I do if I have issues activating or downloading eSIM?
  A8：Ensure your device supports eSIM and is connected to a stable network. If problems persist, call SUN Mobile Customer Service hotline at 8118 3131 or visit a store for help.

What is Number Share (eSIM) Service?

Number Share (eSIM) lets your smartphone and eSIM-supported wearable devices (such as smartwatches) share the same phone number and mobile data plan. The monthly fee for Number Share (eSIM) Service is HK$18，Key benefits include:

Share the Same Number
Once your smartphone pairs with your wearable device, the wearable can independently make and receive calls, send and receive SMS, and access the internet—without needing to carry your phone, keeping you connected anytime.

Shared Mobile Plan
Your wearable shares the voice minutes and data usage within your existing mobile plan, no extra SIM card needed. All usage is consolidated on a single bill for easy tracking and management.

Online Activation, Simple and Convenient
You can activate this service easily through your phone’s app or the SUN Mobile App without visiting a store. SET HEIGHT....................................

Details

Supported Number Share (eSIM) Devices
List of supported models for Number Share (eSIM)

Details

Simple Activation
Activate online to share voice and data usage with your primary number.

Activate Now
Download the SUN Mobile App to register for the service

Number Share (eSIM) Service FAQs
- Q1: How does Number Share (eSIM) Service share the mobile service plan with my phone?
  A1：Your wearable device shares the voice minutes and data in your existing monthly plan via Number Share (eSIM) . No extra SIM card is needed, and usage is combined on one bill.
- Q2: Are there extra fees for Number Share (eSIM) Service?
  A2：Number Share (eSIM) service monthly fee is HK$18.
- Q3: Which devices support Number Share (eSIM) Service?
  A3：Compatible devices usually include Apple Watch and Samsung Galaxy Watch series on SUN Mobile mobile data plans. Refer to the Supported Number Share (eSIM) Devices list.
- Q4: How do I activate Number Share (eSIM) Service?
  A4：Simply download the SUN Mobile App and complete activation via the app with a few easy steps—no need to visit a store.
  
  Download SUN Mobile App
  https://www.sunmobile.com.hk/app/dl
  
  Activate Number Share (eSIM) Service on Apple Watch
  Please check here for details.
  
  Activate Number Share (eSIM) Service on Samsung Galaxy Watch
  Please check here for details.
- Q5: Do I need an extra physical SIM card for Number Share (eSIM) ?
  A5：No. Wearable devices use virtual eSIM technology to share the same phone number and service as your smartphone.
- Q6: Will my phone number change after activation?
  A6：No. Your phone and wearable device will share the same phone number.
- Q7: Can wearable devices make calls and access data independently?
  A7：Yes. After pairing, your wearable can independently make and receive calls, send and receive texts, and use data without the phone nearby.

eSIM vs. Number Share (eSIM) Service Comparison Table

Comparison Item	eSIM Service	Number Share (eSIM) Service
Main Purpose	Cardless smartphone usage	Smartwatch sharing the same number and service plan as your phone
Supported Devices	eSIM-capable smartphones (see supported device list)	Apple Watch series, Samsung Galaxy Watch, Huawei Watch series (see supported device list)
Charges	First-time application free; re-issuance fees apply	Monthly fee HK$18 (shares original service plan usage)
Application Method	Applicant must visit store with Hong Kong ID card	Activate online via mobile app and SUN Mobile App
Usage Management	Independent use	Shares voice and data usage with the primary number

Brands/Types	Models
iPhone	iPhone XS iPhone SE (2nd generation or later) iPhone 12 mini (Hong Kong version) iPhone 13 mini (Hong Kong version) iPhone 16e
iPad	iPad Pro 12.9-inch (3rd generation or later) iPad Pro 11-inch (1st generation or later) iPad Air (3rd generation or later) iPad (7th generation or later) iPad mini (5th generation or later)

Brands/Types	Models
Samsung	Samsung Z Flip Samsung Galaxy Tab S9、Tab S9+、Tab S9 Ultra Samsung Galaxy Tab S9 FE+、Tab S9 FE Samsung Galaxy Tab S10 Ultra、Tab S10+
ASUS	ASUS ZenFone 12 Ultra
Huawei	Huawei P40 Huawei P40 Pro Huawei Mate 40 Pro 5G
MOTOROLA	MOTOROLA RAZR 5G MOTOROLA Edge 40 MOTOROLA RAZR 50 Ultra MOTOROLA RAZR 50
HONOR	HONOR Magic 4 Pro HONOR Magic 5 Pro HONOR Vs 5G HONOR 90 5G HONOR Magic V2 HONOR Magic V2 RSR (PORSCHE DESIGN) HONOR Magic 6 Pro HONOR 200 Pro HONOR 200 HONOR Magic V3 HONOR Magic 7 Pro
HMD	HMD Skyline 5G
VIVO	VIVO X100 Pro VIVO X90 Pro 5G VIVO X200 Pro
Xiaomi	Xiaomi 13 Pro Xiaomi 13 Xiaomi 13T Pro Xiaomi 13T Xiaomi 14 Xiaomi 14T Xiaomi 14T Pro Xiaomi 15 Ultra Xiaomi 15 Redmi Note 13 Pro+ 5G Redmi Note 13 Pro 5G Redmi Note 14 Pro+ 5G Redmi Note 14 Pro 5G
OPPO	OPPO Find N3 Flip OPPO Find N3 OPPO Find N2 Flip 5G OPPO Find X8 Pro OPPO Reno 13 Pro OPPO Find N5
OnePlus	OnePlus 11 5G OnePlus 12+A1:B49

Brands/Types	Models
Microsoft	Microsoft Surface Pro X Microsoft Surface Go 2 LTE Microsoft Surface Go 3 Intel® Core i3 128 LTE Microsoft Surface Pro 9 5G

Smartphone	Smartwatch
iOS	Android
iOS 12.1 or newer versions	Smart devices running a Wear OS

Brands/Types	Models
Apple Watch	Apple Watch (GPS + Cellular) (Series 3 or later) Apple Watch SE (GPS + Cellular) (1st generation or later) Apple Watch Ultra (GPS + Cellular) (1st generation or later)

1.	The registered user should visit any of our shops and present their Hong Kong ID card to apply for a switch to eSIM (replacing a physical SIM card to eSIM for the first time is free of charge).
2.	When your application is complete, you will receive a QR code for your eSIM. Use your smart device to scan and download your eSIM. Once scanned, that eSIM will not work on other devices.
3.	When downloading your eSIM, make sure your phone is connected to the Internet via Wi-Fi or mobile data.

1.	To use the Service you must have an eligible SUN Mobile service plan (“Service Plan”), a Device, and a compatible iPhone which is iPhone 8 or later, with IOS 16.1 or later.
2.	Data usage of the Service will be deducted from the Service Plan of your iPhone.
3.	You can make or receive calls from the Device using the mobile number of your iPhone.
4.	You can only use the Service with 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.
5.	You can purchase up to a maximum of four (4) Services under the same mobile number.
6.	The Service does not support international roaming.
7.	If you terminate the Service Plan of your iPhone, you are required to terminate the Service of your Device by calling our customer service.
8.	The Service is subject to the Mobile Service Agreement of Sun Mobile Limited, please visit.
9.	If there is any inconsistency between the Chinese and English versions of these terms and conditions, the English version shall prevail.

Q1:How do I activate the eSIM Profile on Galaxy Watch LTE?
The eSIM needs to be activated via a phone that supports the Samsung Galaxy Wearable app (for Samsung Galaxy Watch LTE) by scanning the QR code or enter the activation code provided by SUN Mobile where the information of the eSIM will be downloaded onto the wearable for activation. Compatibility between Samsung Galaxy Wearable app (for Galaxy Watch LTE) and your mobile phone is subjected to Samsung’s specifications. Depending on its compatibility, additional app plug-ins may be required. For details, please click here.

Q2:I accidentally reset the eSIM on the Samsung Galaxy Watch LTE. How do I download my eSIM profile again?
You can login to sunmobile.com.hk or SUN Mobile app, click ‘My Account’ → ‘My Number Share (eSIM) Service’, and then ‘Re-download eSIM’.

Q3:I bought a new Galaxy Watch LTE to use with an existing eSIM. Can I use my existing eSIM QR Code again to activate my new Galaxy Watch LTE? Click to Collapse
You can login to sunmobile.com.hk or SUN Mobile app, click ‘My Account’ → ‘My Number Share (eSIM) Service’, and then ‘Replace existing Handset / Device’ to request for a new QR Code/activation code to activate your new Galaxy Watch LTE.

Q4:What should I do if I sell or pass on my Galaxy Watch LTE to a friend?
Firstly, please reset and remove your eSIM from the Samsung Watch, and then contact SUN Mobile Customer Service Hotline 8118 3131 for terminate the Number Share (eSIM) Service. Otherwise, even your eSIM has been removed from the watch, you are still being charge for the monthly service fee of Number Share (eSIM) Service.

Q5:My Galaxy Watch LTE was stolen/lost. What should I do?
Please contact 8118 3131 for report lost and terminate the Number Share (eSIM) Service. If you need the service again, you have to submit a new application.

Q6:If I purchase Galaxy Watch LTE without an active subscription to Number Share (eSIM) Service, Will I be able to use via Bluetooth^® connection?
Yes, Galaxy Watch LTE will function as a companion device with your phone when without a mobile network connection.

Q7:I’m unable to connect my Galaxy Watch LTE to network. What should I do?
From the Apps screen on your phone, please tap Settings and check under Connections that your internet connection and MMS connection are correct and ensure that your mobile data is turned on. If you are still unable to connect, please contact us.

Q8:What is Device Name?
Device Name use for identify your wearable device (smart watch). Device name should be in English letter or number.

Q9:What happens with the Samsung Watch when you're roaming?
Roaming outside Sun Mobile local network coverage area is not available for Samsung Watch even though your SUN Mobile tariff plan may support roaming. However, you will continue to be connected when your Samsung Watch is in proximity of your phone and connected with Bluetooth or connected to Wi-Fi.

Q10:If I have changed my service number, anything do I need to follow up for the eSIM service?
If your service number has been changed, please contact us at 8118 3131 for eSIM service termination. You have to download another new eSIM with your new service number for use.

1.	To use the Service you must have an eligible SUN mobile service plan (“Service Plan”), a compatible “Device”, and a compatible Android 5.0 or newer mobile phone with 1.5GB RAM or above and iPhone which is iPhone 5 with iOS 9.0 or newer.
2.	SMS usage, IDD usage, Voice usage, Data usage and others related usage of the Service will be deducted from the Service Plan of your Phone.
3.	You can make or receive calls from the Device using the mobile number of your Service Plan.
4.	You can only use the Service with one Device at a time.If you want to connect to another Device, you can connect your Device to the Service via “SUN” app on your mobile phone.Alternatively, you can purchase an additional Service to use with the new Device on your mobile phone.
5.	You can purchase up to a maximum of one (1) Service under the same mobile number.
6.	The Service does not support international roaming service.
7.	If you terminate the Service Plan of your mobile phone, you are required to terminate the Service of your Device by calling our customer service.
8.	The Service is subject to the Mobile Service Agreement of Sun Mobile Limited, please visit.
9.	If there is any inconsistency between the Chinese and English versions of these terms and conditions, the English version shall prevail.