Your trip has already begun,
USIMSA

Essential data for your travels! If you want to start your trip comfortably, we recommend our data eSIM. It can be used with just a smartphone setting, without needing to swap SIM cards. Don't carry heavy pocket Wi-Fi devices anymore! Start your journey lighter, more conveniently, and more affordably.

• Scan the QR code on the voucher sent via email to set up your eSIM.
• In rare cases of temporary errors preventing Gmail delivery, please contact us if this occurs (we will send it to another email address).
• Refer to the voucher sent via email for eSIM activation instructions.
• Validity Period: Usable within 180 days from the purchase date
• You can find detailed instructions on how to install your eSIM in our official Installation Guide.

Contact:
Domestic: 1661-0158
International (Local Issues Only): +82-70-5097-6417
KakaoTalk Plus Friend: @USIMSA

• Please ensure your current smartphone model supports eSIM before purchasing.
• After purchase, the eSIM QR code will be sent via email. Exchanges or refunds are not possible after scanning the QR code.
• In rare cases of temporary errors preventing Gmail delivery, please contact us if this occurs (we will send it to another email address).
• If you cannot access your voucher after booking confirmation, please check your spam folder.
• Your phone does not have a built-in QR code scanner, so please ensure you have the voucher printed or the QR code pre-registered.
• You can use the eSIM immediately after registration. An internet connection (cellular or Wi-Fi) is required to install the eSIM.
• Depending on your flight schedule, please register your eSIM before departure or upon arrival at the local airport.
• Before departure, please turn off data roaming and automatic data switching on your existing main line.
• Data usage may not be smooth in some areas depending on the local carrier's network environment.
• Product options may be changed without prior notice according to the regulations of the providing carrier (e.g., data allowance, usage days, reset policy).
• The network provider may change without prior notice, and cancellations or refunds due to this are not possible.
• If you are having trouble using or connecting to the eSIM, do not remove the eSIM. Please contact USIMSA customer service.
• eSIM products can only be registered and used on the device they were initially registered on. Once registered, it cannot be re-registered on another device.