USIMSA · koro Mobile Plan Event

Event participation and eligibility

• This event is only for customers who newly register on or after November 1, 2026 and subscribe to the eligible plan for the first time.
• Benefits are available only to customers who complete registration using the event-specific referral code provided by the partner.
• The referral code must be correctly registered when registration is completed. Missing or incorrect codes make customers ineligible.
• Referral codes cannot be added, changed or applied retroactively after registration is completed.
• Customers who registered before October 31, 2026 are excluded, regardless of whether this is their first plan subscription.
• Existing members who withdraw and re-register, and existing plan users who re-subscribe or change plans, are excluded.
• Customers whose activation application is accepted during the event may qualify even if activation is completed after the event ends.
  • eSIM: the activation status reaches the “Activated” stage during the event.
  • USIM: the activation status reaches the “Preparing shipment” stage during the event.
• Benefits are not provided if activation is not completed, or if the application is canceled, rejected or withdrawn after acceptance.
• Customers who subscribe to or activate a plan other than the eligible plan during the event will not receive benefits.
• Benefits are available only to customers who have consented to marketing messages by November 30, 2026, the event end date.
• Consent to marketing messages is optional. Declining does not restrict subscription to or use of telecommunications services. However, customers who do not meet the event conditions are ineligible for promotional benefits.
• To change marketing consent status, contact customer support.
• Marketing consent is checked as of the event end date and is not checked again at each monthly benefit delivery.
• Participation and payment eligibility are verified using operational system records, including registration history, referral code registration history, activation history, plan subscription details and marketing consent history.

Naver Pay benefit delivery

• A 3,000 Won Naver Pay voucher is delivered once at the end of each month for up to 6 months, starting at the end of the month after the month in which activation is completed.
• Benefits are provided monthly, with a maximum total value of 18,000 Won.
• The maximum 6 monthly deliveries apply only when all conditions are met. Six months of benefits are not guaranteed to every subscriber.
• Benefits are delivered in sequence after monthly eligibility confirmation and processing, so actual receipt dates may differ by customer.
• Delivery schedules may change due to unavoidable circumstances such as system failures or network issues. Changes will be announced through notices or customer communications.
• Voucher registration, accepted merchants, validity periods and usage restrictions follow the issuer’s policies.
• A monthly benefit is considered delivered when the voucher delivery system sends it to the eligible mobile number and confirms the result as “Success”.
• Vouchers with a confirmed successful delivery record will not be reissued or resent, regardless of whether the customer actually reads the message.
• If a successful delivery record is confirmed, vouchers will not be reissued even if unused due to loss, deletion, unread messages, spam filtering, blocked receipt or expiry.
• Successful voucher delivery is verified using the delivery system’s transmission results and related records.
• If delivery fails, the delivery result is unconfirmed or delivery is not properly completed due to our fault, delivery records will be reviewed and the matter handled under applicable laws and operating policies.
• Delivered vouchers cannot be exchanged for cash, other vouchers, telecommunications discounts, additional services or other benefits. This does not affect customer rights under applicable laws.
• Voucher validity extensions and transfers to other lines are not supported.
• Successfully delivered vouchers will not be issued again for the same monthly installment, whether used or not.

Maintaining the plan and benefit restrictions

• These benefits require normal activation and continued use of the eligible plan.
• If any of the following occurs during the benefit period, undelivered benefits from that point onward may be stopped or the customer may become ineligible.
  • Line cancellation or number porting to another carrier.
  • Changing to a plan other than the eligible plan.
  • Changing the line’s registered owner.
  • Temporary suspension, service suspension or line suspension due to fraudulent subscription.
  • Failure to meet other subscription or benefit maintenance conditions of the plan.
• Monthly eligibility is assessed using the line and service status at the time recipients are confirmed.
• Remaining monthly benefits may not be provided after cancellation, a plan change or loss of eligibility.
• Re-subscribing to the same plan after cancellation or a plan change does not restore remaining benefit installments or extend the benefit period.
• Benefits already properly delivered will not be recovered retroactively unless separate recovery conditions apply. If obtained fraudulently, necessary measures may be taken under applicable laws and operating policies.
• Monthly fee discounts, discount periods, discount expiry and fee settlement following plan changes or cancellation follow separate plan policies and terms of service.
• When a line is canceled, charges may be settled according to actual usage duration and the plan’s billing policy, independently of these promotional benefits.

Voucher delivery and mobile number precautions

• Vouchers are sent only to the mobile number of the line activated for this event.
• Vouchers cannot be sent to other numbers, including those of family, acquaintances or third parties, and the delivery number cannot be changed arbitrarily.
• If a customer changes the existing line’s number through the official number change service, the change history and recipient information must be verified.
• Even when using additional services such as Two Number or Dual Number, vouchers are provided for the primary activated line participating in the event. Separate delivery to secondary numbers is not supported.
• Checking payment information related to number changes or additional services may take approximately 3 business days, and delivery schedules may change depending on the results.
• Customers who have changed their number must notify customer support before voucher delivery and request verification of the correct recipient.
• Device settings, spam blocking, text receipt restrictions, number status or network failures may prevent normal receipt of voucher messages.
• If a voucher is not received, customer support can check the initial delivery history and processing result.
• If the voucher system confirms a successful delivery record, reissue or resending is not available, regardless of actual message receipt or reading.
• After successful delivery, the voucher for the same installment will not be provided again even if unusable due to message deletion, loss, phone replacement, spam filtering or expiry.
• Disputes about successful delivery are checked against delivery system records and related materials.
• If the system records a failure or successful delivery cannot be confirmed, fulfillment will be reviewed separately. This is not considered reissuing a voucher already delivered.
• Even if a voucher is not properly received, it cannot be sent instead under another person’s name or to another line’s mobile number.

Event changes and early termination

• This event may end before the scheduled end date due to exhaustion of available benefits, operating circumstances or company circumstances.
• The timing and details of early termination will be announced on the official website or through other official channels.
• Customers who met the participation conditions before early termination will receive benefits under the previously announced payment conditions.
• Customers who meet the new activation application conditions after early termination are ineligible for event benefits.
• Customers who met the participation conditions before early termination may receive remaining benefits if they continue to meet monthly conditions such as maintaining the plan.
• Event operations may change for unavoidable reasons. The legitimate rights of customers who have already met the participation conditions are protected under applicable laws.

Fraudulent participation and duplicate benefits

• Benefits may be restricted if conduct disrupting normal event operations is confirmed, including identity theft, false information, fraudulent line activation or abnormal repeated subscriptions.
• Existing members who withdraw and re-register, or create multiple accounts or repeatedly activate lines to receive duplicate benefits, are not considered first-time subscribers.
• If fraudulent participation is suspected, additional eligibility checks may be conducted. Benefits may be withheld if legitimate eligibility cannot be confirmed.
• If benefits are confirmed to have been obtained fraudulently, necessary measures may be taken under applicable laws and operating policies.
• This event may not be combined with other promotions, event codes or gifts applied to the same registration and activation. Combinability follows the conditions stated for each event.
• Fraudulent participation is assessed using objective registration and usage records.

Other general precautions

• Event inquiries can be submitted to customer support.
• Voucher delivery information is sent via SMS, LMS or MMS.
• If external services are used to deliver benefits, related information will be provided under the privacy policy and applicable laws.
• Registration, activation, plan and consent histories needed to determine participation and payment conditions are processed under applicable laws and the privacy policy.
• Telecommunications service conditions not specified in these event precautions follow the terms of service and plan operating policies.
• Voucher use and management follow the issuer’s terms.
• Customers disputing event conditions may request verification through customer support.

※ Event inquiries: customer support.

※ This event applies only to customers who registered on or after November 1, 2026 and subscribe for the first time to the Postpaid Value 10GB ([KORO] 10GB + 1Mbps_V2) plan.

※ Customers whose marketing consent is not confirmed by November 30, 2026, the event end date, are ineligible for promotional benefits.

※ A confirmed successful transmission in the voucher system counts as completed delivery. Reissue, resending and substitute benefits are then unavailable. This does not affect customer rights under applicable laws.