Post Paid Plans For Foreign Professionals

• If you’re using a postpaid plan, you can keep your current number even when switching carriers.
• However, with prepaid plans, it’s a bit more complicated. Some prepaid carriers let you transfer your number, but some don’t. Also, if you activated your prepaid SIM using your passport, your number must be linked to your ARC to keep it when switching to our plan. Please let us know your current carrier, and we’ll do our best to help you keep your number and save money at the same time!
• Airport data-only roaming SIMs are temporary plans, so you cannot keep your number when changing carriers.

• In Korea, telecom companies mainly compete by offering financial benefits to attract new customers.

• When you switch carriers, the carrier pays us a commission. But in many places, customers don’t even know this commission exists.

• At Kimbab Mobile, we turn it into real benefits for you — in the form of discounts and cashback.

• We help you change carriers multiple times during your stay, sharing the commission each time.

• Staying with one carrier for too long only benefits the carrier, not you.

• We aim for an ongoing relationship where we both benefit continuously.

• This might seem unfamiliar at first, but it’s a safe, popular method Koreans often use to save money. When your current promotion ends, we’ll contact you first to make sure you easily get the next benefit!

• When the promotion ends, cashback will no longer be provided, so you’ll need to pay the regular (original) price without any discounts. But don’t worry, when the promotion ends, we will contact you first!
• As long as you stay in Korea, we’ll make sure you continue getting maximum benefits by rearranging your plan.
• We’ll help you keep the same discounted promotional price using a legal and common method called 알뜰폰메뚜기족 (Altteulpon hopping).
• (In this process, your number stays the same, and Kimbab Mobile will cover any SIM and activation fees.)
• We promise to continue providing a similar plan with the same discounted price, unless you decide to change your data plan.
• For more details about 알뜰폰메뚜기족, please refer to explanation Q2 above.

Cashback is deposited into your bank account at the end of each month, starting from the month after activation (your first billing month).

The sender name will appear as follows: 1st kimbab promo, 2nd kimbab promo, (and so on, counting upwards)

If you see Last kimbab promo, it indicates this is the final cashback payment, meaning your current promotion has ended.

We’ll proactively contact you before the promotion ends, to explain clearly how you can renew or switch your plan.

Example:

• Regular plan price: ₩17,600
• Your Plan Price (after discount): ₩11,900

→ Every month, ₩5,700 (kimbab promo) will be deposited

into your account throughout the promotional period.

Yes, if your plan is connected to your ARC, you can use it for identity verification (OTP) in Korea! You can successfully receive OTP text messages for identity verification on banking apps, government websites, shopping apps, delivery apps, and more.

When selecting your carrier during verification, please make sure to click on ‘Altteulpon’ (MVNO) and then choose your exact carrier from the list.(For example, if you’re using MVNO KT but select “KT” instead, the OTP message will not be delivered!)

Also, please enter your name in all capital letters, and make sure the name order matches the one on your ARC. If your name includes a hyphen (-), enter it without a space. Below is an example of the two types of MVNO selection screens.

If you run into any issues during verification, feel free to contact us- we’ll check and will try to help you as soon as we can!

No, you don’t need to do that. once your new SIM is activated, your old SIM will automatically stop working.

For postpaid plans, the charges from the day your old SIM is deactivated until the end of that billing month will be calculated by the carrier’s system and automatically added to your next bill along with your new SIM charges.So even if the charges haven’t been billed yet, as long as there’s no unpaid balance, activation is possible.

For more details, please refer to the guide we will provide when your SIM is activated.

📌 If you were using a prepaid plan,

• any remaining credit will be lost once the new SIM is activated, even if there is unused balance.

Yes, if your family relationship can be verified, a new number can be activated under your name. But It depends on your visa type. In most cases, you can use up to two postpaid numbers and two prepaid number. And if you want more information in detail then please message us on our official Instagram or Facebook page.

In Korea, eSIM is technically available, but we don’t recommend it.

And eSIM is still not commonly used, and about 99% of people use physical SIM cards (USIM).

Major carriers like SKT, KT, and LG do support eSIM, but most MVNO (Altteulpon) carriers do not offer eSIM service.

While it’s still possible to get an eSIM through a few specific carriers,

eSIM is not the standard method in Korea, so there may be limitations or difficulties in maintaining promotions.

That’s why we recommend using a physical SIM card for a more stable experience in Korea.

In Korea, 5G is only slightly faster than LTE, but it’s not available in many places and often disconnects or slows down. It can also drain your battery faster. And because of these issues, most people still prefer LTE. For a more stable and reliable experience, we recommend choosing LTE only.

Once a phone number has been terminated, it cannot be reactivated. However, if the number has been terminated within the last 30 days, Korean telecom companies offer a helpful service called “Number Guidance Service” (번호안내서비스).

This is a temporary call forwarding service that allows calls and text messages sent to your old (terminated) number to be automatically redirected to your new number. That way, your contacts can still reach you, even after your number has been changed.

This service is free for a limited time (usually a few weeks), and if you want to continue using it after that, there is a small monthly fee of around ₩3,000.

Please note:

• You cannot use the old number to make calls or send text messages.
• This service is only available within 30 days after the number is terminated.
• It can only be linked to a new number under your own name; it cannot be connected to a number under someone else’s name.

Yes, it is possible. Please press 알뜰폰 to verify your identity. Refer to our posts for more information.

The promotion of the postpaid plan we offer is only for customers who transfer carriers. Carrier companies in Korea offer us low incentives for new foreign customers. This is why we added one step before activating a new postpaid plan, so that you can be offered postpaid plan with promotions from the beginning. First, we will provide you with our free prepaid plan for 14 days. (However, the prepaid SIM fee will be charged at 10,000 won). And on the 15th day, we will contact you to help you transfer to a postpaid plan. This way, the carrier company will offer us the appropriate amount of incentive by recognizing you as a customer who changes the carrier instead of a new customer. By doing so, we can provide you with an affordable plan. However, if your plan is activated as a postpaid plan from the beginning, we cannot provide additional Kimbab promotion from the beginning, but from the time we change your carrier (after 6 months of use). Even if it is a hassle, it is the most optimal strategy for you, which is only given to you by Kimbab Mobile.