Home internet in Korea can arrive as part of a rental, a separate broadband contract or a package tied to the household’s mobile phones. Those arrangements can have very different costs when you move, change carriers or leave the country.
This guide helps you compare the service you actually need, the commitment you can keep and the total household bill. It covers home broadband rather than travel eSIMs; for mobile service, use our Korean phone-plan guide.
Official plan examples checked November 12, 2026. Confirm availability at your full address and the written price for your documents, contract term and bundle before applying.
Check what your home already includes
Before arranging installation, ask the landlord or building manager whether internet is included in rent or the management fee (관리비). Find out whose name the service is in, whether there is a working connection inside the unit and who handles faults.
Try the connection where you expect to work or study, ideally when other residents are home. Ask whether you may install your own line if the existing service does not meet your needs, and whether any cabling work needs permission.
Choose speed and equipment for the household
Use the tiers below as a starting point, then consider how many people are online at the same time. Advertised speed is the connection’s maximum, not a promise that every phone will receive that speed over Wi-Fi. KT identifies the premises, network equipment and connected devices as factors affecting performance.[1]
A faster subscription will not necessarily fix a weak signal in the bedroom. Ask where the router will be installed, whether another access point is needed and what equipment is rented rather than owned. For a work desk or gaming setup, consider a wired Ethernet connection where practical. Ask about upload speed and latency if those matter to your work; a download-speed label alone cannot answer those questions.
Shorter stays: compare real alternatives to a three-year contract
Shorter products exist. KT Global Shop currently advertises a one-year YOGO offer at ₩22,000 a month for up to 100 Mbps without the Wi-Fi option, ₩30,800 for its 500 Mbps Wi-Fi product and ₩38,500 for its 1 Gbps Wi-Fi product. The separate 100 Mbps Wi-Fi example is ₩24,200. These are specific online products, not the price of every KT one-year contract. Check the exact equipment, installation charge and eligibility before ordering.[2]
KT also lists prepaid broadband for 3, 6 or 12 months. Its 100 Mbps three-month example costs ₩92,400 upfront, with a separate ₩36,000 installation fee and ₩20,000 equipment deposit. The deposit is refundable on equipment return, but the page says personal early cancellation does not receive a refund. Prepaid can fit a known short stay; it is less flexible if your departure date changes.[3]
Ask for quotes covering the same speed and equipment. A standard one-year rate, an online one-year promotion and a three-year price are different offers. Compare the months you expect to use the service, not just the lowest monthly number.
Phone-and-internet bundles: compare the whole bill
A bundle (결합) connects eligible services for a discount. It may reduce the broadband bill, the mobile bill or both. The discount can depend on the exact mobile plan, number of lines, contract length and relationship between account holders.
Start with the phones your household already uses. Ask the provider to quote the internet both with and without those lines, and to show any mobile-plan changes needed to qualify. Switching a cheap SIM-only plan to an expensive mobile tier can erase an attractive broadband saving.
These are discount structures, not final internet prices. The SKT and LG U+ examples include VAT. The remaining service charges, equipment and any optional TV package still belong in the comparison.[4][5][6]
Family bundles and foreign residents
Sharing an apartment does not automatically establish the relationship required for a family bundle. Ask which account holder must apply, which relatives or other eligible members can join, and what evidence is accepted for your household.
LG U+ specifically lists document routes for foreigners, including a foreigner-registration fact certificate showing family details, or embassy-issued family evidence with a notarized Korean translation. Ask the provider to confirm the appropriate route before paying for translations. Its bundle also requires participating members’ consent.[6]
Ask for a second quote showing what happens if a mobile line switches away or is suspended. For example, LG U+ says that suspending the sole mobile line in a one-mobile-plus-internet bundle removes the internet discount during that suspension. A holiday, a different mobile plan or someone leaving the household can affect the economics even when the broadband itself stays connected.[6]
What the bundle saves on the same service
SK Telecom’s T Direct Shop lists the following prices for its 100 Mbps Wi-Fi internet on a three-year contract, with VAT included and the online immediate discount applied. Adding one eligible SK mobile line reduces the internet charge by ₩4,400 a month.[8]
These are internet charges, not combined phone-and-internet totals. Add the same eligible mobile plan to both columns to compare the household bill; any separate mobile discount should appear as its own saving. The 36-month figures assume keeping the service for the full contract. Installation and cancellation charges are separate. The online immediate discount is an alternative to the promotional gift, not an additional benefit.[8]
A separate comparison can help if you would need to change phone plans to qualify. A lower-cost MVNO plan plus standalone internet may cost less overall than a carrier bundle, depending on its allowance and terms. Compare those actual offers separately rather than treating a higher mobile price as the cost of bundling the same service.
To compare total costs, multiply the monthly bills after recurring discounts by the months of use. Add installation, equipment and any expected early-exit charges, then subtract one-time cashback or the value of gifts you can keep. Compare refundable deposits separately from nonrefundable costs. Include the price after an introductory discount ends.
Installation, routers and welcome gifts
Give the provider the full address, including building and unit, and confirm the available product before choosing a speed. Arrange building access and a time when someone can let the engineer in. Request the document and payment requirements for a foreign applicant through the provider’s official channel; do not assume a mobile-SIM checklist also covers broadband.
Ask for a written breakdown of the first bill. It should distinguish service, installation, router or modem rental, optional IPTV and any deposit. KT’s standard broadband page, for example, lists modem rental separately and says installation or relocation can attract a dispatch fee. These charges vary by product and installation circumstances.[1]
Promotions may offer vouchers, gifts or a monthly reduction instead. Compare the final contract with the offer you discussed. Ask who supplies the gift, when it arrives and whether cancellation, suspension or downgrading triggers repayment. If you do not need IPTV, compare internet-only pricing before accepting a package that includes it. Our phone-plan guide explains the wider promotion culture and how to separate gifts from financed purchases.
Moving home or leaving Korea early
Moving within Korea and cancelling the service are separate requests. Before moving, ask whether the current provider can serve the new unit, what relocation costs and whether any proposed change starts a new commitment. If service cannot be provided, ask for the applicable terms and evidence required for any cancellation relief.
For an early departure, request a dated cancellation estimate with the components separated: service-discount repayment, equipment-related charges, gift repayment and outstanding usage. KT’s published FAQ says early cancellation can require repayment of service and modem-rental discounts. It also explains that a final bill may arrive the following month because service is billed after use.[7]
Do not budget on an automatic waiver simply because you have a flight out of Korea. Explain the circumstances and ask the provider which contract provision applies, whether a reduction is available and which documents it needs. Keep the written answer. This is particularly important if a salesperson promised that you could cancel whenever you left.
- Confirm the cancellation date and obtain a reference or written confirmation.
- Arrange return of rented equipment, including adapters, and keep the receipt.
- Check how cancellation changes the household’s remaining mobile discounts.
- Keep a working contact method and payment route for the final bill or deposit refund.
- Check the final statement rather than assuming moving out ended the service.
Questions you can show the landlord or provider
- 인터넷 요금이 월세나 관리비에 포함되어 있나요?
Is internet included in the rent or management fee? - 이 주소와 호수에 설치 가능한 상품을 확인해 주세요.
Please check which products can be installed at this address and unit. - 부가세와 장비 임대료를 포함한 월 청구액은 얼마인가요?
What is the monthly bill including VAT and equipment rental? - 휴대폰 결합 전후의 총요금을 각각 알려 주세요.
Please show the total bill before and after the mobile bundle. - 가족의 휴대폰 한 회선이 빠지면 요금이 어떻게 바뀌나요?
How does the bill change if one family mobile line leaves? - 이사하거나 출국해서 중도 해지하면 반환금이 얼마인가요?
What would I need to repay if I cancel early because I move or leave Korea? - 사은품 반환 조건과 약정 종료일을 서면으로 주세요.
Please give me the gift-repayment conditions and contract end date in writing.
Where to go from here
Compare the mobile side with our phone-plan and contract guide. If an online application fails at an identity check, use the phone-verification guide. For the rest of your arrival setup, see our first-week checklist.
Sources
- KT: standard broadband, equipment, installation and relocation.
- KT Global Shop: YOGO one-year internet.
- KT: prepaid broadband prices and conditions.
- KT: total-charge bundle discount.
- SKT: 요즘가족결합 rates and eligibility.
- LG U+: 참 쉬운 가족 결합 rates, eligibility and documents.
- KT: internet support, early cancellation and final billing.
- SK Telecom T Direct Shop: internet-only pricing with and without an eligible mobile bundle, online discount and gift conditions.
