Vietnam eSIM｜5G/4G High-Speed Internet Daily Data eSIM【China Unicom Official Product】
- No need to wait for mailing, no need to rush to pick it up, no need to worry about losing the card pin, you can travel abroad with peace of mind
- Carefully selected local operators, stable signal, no need to change cards, no missed calls with the original number, high efficiency on business trips
- Official product of China Unicom, connection quality and after-sales customer service are guaranteed!
Package Options
Product Info
The content of this product is provided by machine translation and may not reflect the actual information, please take this into consideration before booking.
Please confirm your device is compatible with eSIM before purchasing
eSIM Installation Instructions (iOS)
eSIM Installation Instructions (Android)
Please follow the instructions in the China Unicom Hong Kong email to scan the QR Code to use the eSIM (if you do not receive the email, please check your spam folder first)
SIM Card Specifications
| Data Usage Specifications | 2GB |
| Transmission Specifications | 5G/4G |
| Signal Coverage Area | Vietnam |
| Mobile Carrier | Viettel |
| Supported Sizes | eSIM |
| Hotspot Sharing | Unavailable |
| Supported Frequencies(4G) | B1（2100 MHz）, B3（1800 MHz）, B8（900 MHz） |
| Top-Up Availability | Top-up unavailable |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Mobile hotspot, Carrier-customized device |
| Reminders | ・Day calculation method: Natural day system (If the user purchases a 5-day Internet plan and installs and activates it at 10:00 am on September 1, this plan will end at 23:59 on September 5, China Standard Time (UTC+8)) ・If the location or mobile phone does not support 5G, it will automatically switch to 4G/3G signal. The actual network speed will be based on the local signal. ・Dial *118*50# to check remaining data ・This product does not support the use of TikTok. |
| Network Type | Roaming |
| Mobile Virtual Network Operator (MVNO) | 中國聯通 |
Purchase Notice
- This product only provides data Internet access services, does not include local phone numbers, and has no call function.
- After purchase, you will receive an email from China Unicom Hong Kong containing the eSIM QR Code within the second working day (excluding Saturdays, Sundays and public holidays) at the earliest. Scan the QR Code according to the instructions in the email to use the eSIM. If you do not receive the email, please check your spam folder first.
- Please make sure that your mobile phone has eSIM function and there are no SIM card restrictions. No refunds, changes or cancellations for any reason will be accepted after the order is placed. Please note.
- In accordance with the principle of fair use of the Internet, telecommunications companies may, at their discretion, limit the traffic of users who use a large amount of data traffic in a short period of time. Please avoid watching videos for a long time or processing a large amount of data in a short period of time.
- Please be aware that the quality of Internet access may be affected by factors such as location, terrain, building obstruction, number of users and weather.
Reminders
Please print the QR code on your voucher before departure, or prepare another device that can display the QR code on your voucher to facilitate the installation of the eSIM
After purchase, you will receive an email from China Unicom Hong Kong containing the eSIM QR Code within the second working day (Monday to Friday, excluding Saturdays, Sundays and public holidays) at the earliest. Scan the QR Code according to the instructions in the email to use the eSIM. If you do not receive the email, please check your spam folder first.
The first day of your Internet access is counted as the first day of your Internet access. It is recommended that you scan the QR code and install the service before departure or after arriving at your destination to avoid premature activation, which may affect your rights and interests.
This eSIM must be activated within 365 days of issuance. It is recommended to activate it as soon as possible after arriving at your destination to ensure your rights and interests.
eSIM only supports one-time scan code installation. Please do not delete the eSIM arbitrarily after successful installation.
【China Unicom Customer Service Information】WhatsApp: +852 6361 0010 / Hong Kong phone +852 2122 1188 / Customer Service Email: hk-cs@cuniq.com (09:00–21:00 daily)
Cancellation Policy
- Once the order has been completed, it cannot be canceled, modified, or refunded
- Due to time zone differences, the confirmed cancellation date is based on the supplier’s local time. Please allow 2–5 business days to process your cancellation request, after which the cancellation fee will be charged according to the product’s cancellation policy. Once the cancellation is confirmed, you will receive your refund within 14 working days.
FAQ
Yes, using an eSIM for internet access is completely legal for tourists visiting Vietnam. It is a widely accepted and convenient method for staying connected, offering a modern alternative to traditional physical SIM cards. Travelers can confidently use eSIMs for their communication needs during their trip, ensuring compliance with local regulations.
To choose the most suitable option, tourists should consider their expected data usage, trip duration, and desired internet speed (4G/5G). eSIMs offer convenience as they eliminate the need for physical card changes and allow you to retain your original phone number for calls. It is advisable to select providers known for strong partnerships with local operators to ensure stable signal and reliable coverage across Vietnam.
Travelers using a 4G/5G eSIM in Vietnam can generally expect good internet speeds and reliable connectivity, especially in major cities and popular tourist destinations. Most operators provide robust 4G coverage, and 5G networks are expanding in urban areas. The overall quality and consistency of your internet experience will depend on the specific network provider and their infrastructure in the regions you visit.
A Vietnam eSIM is often a highly worthwhile option for travelers due to its significant convenience and efficiency. It eliminates the hassle of physical SIM card swaps, avoiding potential loss of the card pin or the SIM itself. Activation via a simple QR code means quick setup, and you can often keep your original phone number active for calls and SMS while using the eSIM for data, making travel seamless.
Yes, a Vietnam eSIM can typically be used exclusively for mobile data. Most travel-focused eSIMs are designed primarily to provide internet access, enabling you to use messaging applications and make calls via Voice over IP (VoIP) services. This setup often allows your primary physical SIM to remain active for receiving traditional calls and SMS on your original number, keeping your communication options separate.
The typical setup process for a Vietnam eSIM is straightforward and digital. After purchase, you will usually receive a QR code via email. To activate, navigate to your phone's cellular settings, select the option to add a new cellular plan, and scan the provided QR code. Follow any on-screen prompts to enable the eSIM, ensuring data roaming is turned on. Activation is generally quick, providing immediate internet access.
While using a VPN for personal use is generally not illegal in Vietnam, the country does have regulations concerning internet content and access. It is important for users to ensure that all online activities conducted via a VPN and eSIM comply with local laws. A VPN can enhance privacy and security for travelers, but awareness of local internet policies is always recommended.
No, using a Vietnam eSIM typically does not affect your ability to receive calls or SMS on your original phone number. Modern smartphones support dual SIM functionality, allowing you to have both your physical SIM and the eSIM active simultaneously. You can usually configure your phone settings to designate your physical SIM for calls and SMS, while the eSIM provides mobile data, ensuring uninterrupted communication.
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