Refund Policy
Last updated: 2026
1. Overview
Datasim.world is a digital service offering international eSIM data products to customers.
As eSIM is a digital product, refunds for activated or used products are limited.
✔️ 2. Conditions for a 100% refund
- ✓The eSIM QR code could not be installed solely due to a system error
- ✓The request was made within 3 days of purchase
- ✓Sufficient supporting evidence was provided in full as required
✔️ 3. Partial refund
- ✓The eSIM activated but did not work properly due to a system error
- ✓Screenshots, recordings and required evidence were provided
The refund amount is decided based on the circumstances.
❌ 4. No refund
- ✗The eSIM has already been used
- ✗The QR code was scanned successfully
- ✗The customer did not check device compatibility
- ✗The device was carrier-locked
- ✗The issue was caused by incorrect settings by the customer
- ✗The purchased data plan has expired
5. How to request a refund
To request a refund, send the following:
- •Order number
- •Email address
- •Description of the issue
- •Screenshots and evidence
6. Refund timeline
1–3
business days to review the request
5–7
business days to issue the refund
⚠️ 8. Korean numbered SIM / physical SIM — SPECIAL TERMS
Korean 010-number SIMs and physical SIMs can only be activated after identity verification, as required by Korean telecom law. The following therefore always applies:
- ✗Without a clear passport scan/photo AND a selfie holding the passport, the SIM CANNOT be activated.
- ✗Once the SIM is activated, NO refund is available.
- ✗Physical SIMs are collected in person at Incheon Airport. They are NOT shipped to Mongolia.
- ✗If the SIM is not collected at the airport, NO refund is available.
- ✗If your device is incompatible (after activation), NO refund is available. Always confirm your phone model before purchase.
- ✗For eSIM issuance, no refund is available once the eSIM details have been sent.
📌 If passport details are not provided WITHIN 7 DAYS of payment, the order is cancelled automatically and 50% of the amount paid is withheld as a cancellation fee; the remainder is refunded. We send three email reminders during that period.
- •Numbered SIM: activated ONLY AFTER arrival in Korea, roughly 2 hours after entry is confirmed.
- •Operating hours: 10:00–19:00 KST. Requests outside these hours are processed in the next working window.
- •Data-only eSIM: can be activated one day before departure.
7. Final provision
Datasim reserves the right to make the final decision on a refund request based on service logs, activation data and technical conditions.