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Terms of sale

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Terms of sale
  1. 1. Who sells the eSIM
  2. 2. What you buy
  3. 3. Phone compatibility
  4. 4. Ordering and payment
  5. 5. Delivery
  6. 6. Right of withdrawal
  7. 7. Refunds
  8. 8. Using the eSIM
  9. 9. Liability
  10. 10. Complaints
  11. 11. Personal data
  12. 12. Changes to these Terms
  13. 13. Governing law and courts
  14. 14. Language

These Terms of sale apply to every purchase of an eSIM data plan on vietsim.com. Please read them before you pay. When you tick the consent box before checkout, you accept the version of these Terms published on the day of your purchase.

1. Who sells the eSIM

VietSIM is a brand of Roamworks Limited 漫行有限公司, a Hong Kong company at Unit 1603, 16th Floor, The L. Plaza, 367 - 375 Queen’s Road Central, Sheung Wan, Hong Kong, with Hong Kong Business Registration number 81414783 (“VietSIM”, “we”, “us”).

You can reach us at contact@vietsim.com.

We sell prepaid eSIM profiles for the destinations listed on the purchased plan. The mobile networks are operated by carriers, which are not parties to your purchase. We obtain profiles from an authorised distributor.

2. What you buy

  • An eSIM is a digital SIM profile. You install it on a compatible phone by scanning a QR code or by entering an SM-DP+ address and an activation code.

  • Each plan shows the network, the data allowance (per day, in total or unlimited), the validity in days, whether calls, SMS or a local phone number are included, and the price.

  • A daily allowance renews every day on the carrier’s schedule. Once an allowance is used up, the carrier may slow down or stop mobile data until it renews or the plan ends.

  • Plans work in a destination covered by your purchased plan only. They cannot be topped up or extended unless the plan says so.

  • Each eSIM profile must be activated before a deadline set by the carrier. When we sell a profile, that deadline is at least 3 days away. If you are buying more than a week before your trip, write to us first and we will confirm the deadline for your plan.

  • Follow the purchased plan’s installation timing, activation trigger and deadline. Some plans require installation after arrival. Regional plans share one allowance and validity period across the covered destinations.

3. Phone compatibility

Before you buy, check that your phone supports eSIM and is not locked to a carrier. The plan page explains how. An eSIM bought for an incompatible or locked phone is not refunded (see the Refund policy).

4. Ordering and payment

  • Prices are shown in US dollars. The total you pay, including any tax that applies, is shown on the payment page before you confirm.
  • Payments are processed by Stripe. We never receive or store your full card details.
  • The contract is concluded when Stripe confirms your payment. If the payment fails or the payment page expires, no contract is concluded and you are not charged.
  • One purchase is one eSIM.
  • We may refuse or cancel an order before delivery if we suspect fraud or if the plan is no longer available. If you have already been charged, we refund the full amount.

5. Delivery

  • The eSIM is delivered electronically on the order page that opens after payment, usually within a minute. The page shows the QR code, the SM-DP+ address and the activation code.
  • Save the link to the order page and keep it private. Anyone with the QR code can install the eSIM, and a profile can usually be installed only once.
  • If automatic delivery fails, we contact you by email. If we cannot deliver the eSIM within 2 business days of payment, we refund you in full.

6. Right of withdrawal

If you are a consumer in the European Union, you normally have 14 days to withdraw from an online purchase without giving a reason. For digital content and services that are supplied straight away, this right ends once delivery has begun with your express consent and your acknowledgement that you lose the right.

Before checkout you ask us to deliver the eSIM immediately and confirm that you lose the right of withdrawal once the QR code is shown. After the QR code has been displayed on your order page, you can no longer withdraw under this right. The Refund policy still applies: it gives you a full refund if the eSIM does not work in a destination covered by your purchased plan and we cannot fix it.

7. Refunds

Refunds are handled under our Refund policy. In short: a full refund if the eSIM does not work in a destination covered by your purchased plan and we cannot fix it, or if we do not deliver it; a working eSIM is not refunded, whether or not it has been installed.

8. Using the eSIM

  • Use the eSIM lawfully and within the carrier’s fair use rules. Do not resell it or use it in SIM boxes, for bulk messaging or for automated traffic.
  • Registration requirements depend on the destination and plan. If identity details are required to keep the line active, service may be suspended until you provide them.
  • Coverage, speed and availability are provided by the carrier and vary with location, buildings, time of day and network load.

9. Liability

  • We are responsible for delivering a working eSIM profile that matches the plan you bought.
  • Beyond refunding the price under the Refund policy, we are not responsible for losses caused by network outages, gaps in coverage or carrier decisions outside our control, or by installing the eSIM on an incompatible or locked phone.
  • Nothing in these Terms limits liability that cannot be limited by law, including liability for intent or gross negligence, or your statutory rights as a consumer, including your rights if the eSIM does not conform to the contract.

10. Complaints

Send complaints to contact@vietsim.com with the link to your order page, a description of the problem and, if possible, screenshots. We reply within 14 days.

If you are a consumer, you can also get help from a consumer advice body in the country where you live.

11. Personal data

We process personal data as described in our Privacy policy. If you allow marketing cookies on the site, we report your visit and your purchase to Meta to measure our ads, as the Privacy policy sets out; buying does not depend on that choice.

12. Changes to these Terms

We may update these Terms, for example when the law or our plans change. Your purchase is governed by the version you accepted before checkout. Each version carries its date at the top of this page.

13. Governing law and courts

These Terms are governed by the law of Hong Kong, and the courts of Hong Kong have jurisdiction over disputes about them. If you are a consumer, this choice does not take away the protection of the mandatory rules of the country where you normally live, and you may bring a claim before the courts of that country.

14. Language

These Terms are published in several languages. If the versions differ, the English version prevails, except where the law of your country lets you rely on the version in your language.