The first question is not which internet company to choose. It is whether your room already has a connection you are paying for. Before signing anything, ask the landlord or building manager what is included in your rent or maintenance fee, and whether you need your own router.
Foreign residents can apply for home internet in Korea, but the service available at your exact address, your identification documents, and the contract you choose all matter. You do not necessarily need a three-year contract. Get an itemized quote that includes installation, Wi-Fi equipment, and the cost of leaving early—not just the advertised monthly price.
This guide walks through the decisions in the order you will face them: checking your room, applying, meeting the installer, and eventually moving out.
Check what your apartment already provides
A Wi-Fi network appearing on your phone does not tell you who pays for it or whether you are allowed to use it. Ask these questions before ordering a second line:
- Is internet included in the maintenance fee (관리비)?
- Is there an active connection to this room, or only a shared building Wi-Fi network?
- Who handles faults: the landlord, building office, or an internet provider?
- Does the router belong to the landlord, a former tenant, or a provider?
- If I want a separate line, is installation permitted, including any necessary drilling or access to the communications cabinet?
A useful message is: 관리비에 인터넷이 포함되어 있나요? 공유기는 제가 준비해야 하나요? — “Is internet included in the maintenance fee? Do I need to provide a router?”
If internet is included but unreliable, report that first. Buying a new router will not activate a disconnected wall socket, and buying a faster plan will not necessarily solve a weak signal in the bedroom.
Visual guide: Use Korea Living Lab to understand common Wi-Fi terms and the questions to ask your host or provider. Explore Wi-Fi names and equipment roles.
Choose the contract length before the speed
Start with how long you expect to need the service. A one-year lease and a three-year internet commitment are different obligations. Do not assume the landlord ending your lease, your job changing, or your departure from Korea automatically clears the internet contract.
KT, SK Broadband, and LG U+ are providers to compare. The examples below use KT's public English product pages because they explain shorter-term options; they are not a ranking or a claim that KT is cheapest at every address.
A current one-year option
When checked on September 22, 2026, KT Global Shop's YOGO one-year page listed Internet Slim, up to 100 Mbps, at ₩22,000 per month; Basic WiFi, up to 500 Mbps, at ₩30,800; and Essence WiFi, up to 1 Gbps, at ₩38,500. These are advertised one-year-plan examples, not all-inclusive installation quotes. The page separately shows Slim WiFi at ₩24,200: the ₩22,000 Slim headline should not be read as including the same Wi-Fi package.
Installation is charged separately, and early termination during the year carries a charge. Confirm eligibility, the exact equipment, and the final VAT-inclusive amount through the official application channel. Do not build your budget around a temporary signup gift.
For a semester or another short stay
KT's prepaid internet page offers 3-, 6-, and 12-month periods. It lists service and equipment rental within the prepaid price, but installation and an equipment deposit separately. Charges differ between internet-only and internet-plus-Wi-Fi packages, so request the total upfront amount.
Prepaid does not mean freely refundable. The page says unused service and Wi-Fi fees are not refunded for an early cancellation for personal reasons. It also excludes mobile/IPTV bundles and requires equipment return for the deposit refund. Confirm the expiry date, extension procedure, and return arrangements when ordering.
For a very short gap, a permitted mobile hotspot or portable Wi-Fi rental may be simpler than a fixed installation. Check tethering allowances and indoor reception first. Our SIM, eSIM, and pocket Wi-Fi comparison covers temporary connectivity rather than home broadband contracts.
Prepare for the application—and know what to ask if it fails
Have your passport and, if issued, your Residence Card ready. Also prepare your full Korean installation address, building and unit number, a reachable contact number, preferred installation dates, and the payment method you want to use. Keep your lease available in case the provider needs address clarification. This is a preparation checklist, not a statement that every provider requires every item. For the callback form on KT's YOGO one-year page, provide a contact number within Korea; that form says consultation is unavailable for overseas contacts. If you do not have one, ask KT which other consultation channel you can use.
Before visiting a shop or sending documents, ask the provider to confirm:
- Which identification it accepts for this fixed-line product and your residence status.
- Whether your remaining permitted stay affects eligibility or the available contract term.
- Whether your bank account or card is accepted for billing, including whether an overseas-issued card works.
- Whether online identity verification is required, or an assisted application is available.
Be careful with pages headed “required documents.” For example, KT's What You'll Need page describes mobile-service rules, including passport-based prepaid mobile service. That is not confirmation that a passport alone will qualify you for a particular home internet plan.
If you are waiting for your Residence Card, ask specifically about fixed-line eligibility using your current documents. If the provider cannot approve the application yet, arrange temporary connectivity rather than putting the contract in a friend's name as a shortcut.
When phone verification or the address search blocks you
Take a screenshot of the error without exposing your full identification number. Check that your name and phone registration match the identity record being used. A tourist data connection is not proof that a resident identity check will work. See our resident SIM and phone-verification guide if that is the actual blockage.
If the address search fails, give the agent both the road-name address and the building/unit details from your lease. Ask for a manual service-availability check. Do not choose a neighboring building simply to get past the form: an accepted order is no help if the technician arrives at the wrong place.
If told “foreigners cannot apply,” ask whether the limitation concerns this product, your documents, your address, or that sales channel. Request the missing requirement in writing or speak to the provider's own support team. A specific reason gives you something you can resolve.
Ask for a quote you can actually compare
Send each provider the same address and expected period of use. Say whether you need internet alone, a rented router, or television. Ask which speeds can actually be installed in your unit, not merely sold in your neighborhood.
| Quote item | What to confirm |
|---|---|
| Monthly total | VAT, router rental, and any required add-ons. Ask for the price without a promotional credit-card spending discount. |
| Installation | The first installation charge and whether the proposed appointment time changes it. |
| Contract dates | When the commitment starts, when it ends, and what happens afterward. |
| Bundles | Which mobile or TV service is required, and what the internet price becomes if you remove it. |
| Early exit | An estimated total if you cancel on your likely departure date, including any separate signup-benefit repayment. |
| Equipment | What is rented, any deposit, and the return method and deadline. |
Keep the quote and order confirmation. If a salesperson promises that moving abroad makes cancellation free, ask them to identify the applicable contract clause and required evidence before you sign. Do not rely on a verbal promise.
For comparison, add up monthly charges for your expected stay + installation + nonrefundable equipment costs + any confirmed exit charges. Track a refundable deposit separately as money you must pay upfront. A television bundle you do not use can cost more overall even when the advertised internet component looks cheaper.
How much speed do you need?
For one person browsing, taking video calls, and streaming, a 100 Mbps plan is a reasonable starting point to discuss. Consider 500 Mbps when several people will use the connection heavily at once or you frequently move large files. A 1 Gbps plan is worth comparing for sustained heavy use—not simply because it is the biggest number.
These are practical starting points, not performance guarantees. Ask about upload speed if you send large work files, and tell the provider if reliable video meetings are essential. KT's internet FAQ notes that devices, premises wiring, and the connection environment can affect actual speed. A faster subscription cannot guarantee faster Wi-Fi in every room.
Make the installation appointment count
Before the visit, confirm that the technician can reach you and enter the building. Arrange access to the room and any locked communications cabinet with the manager. Move furniture away from the intended connection point. If drilling or new wiring is proposed, get the owner's permission before work starts.
Tell the installer where you actually use the internet. A convenient corner for the cable may be a poor place for coverage. Ask which box is the modem or optical terminal and which is the Wi-Fi router; some setups combine functions.
Before the technician leaves:
- Connect your own phone or laptop and open a few pages. Turn off mobile data briefly on the phone so it does not hide a Wi-Fi problem.
- Test from your desk and bedroom, not only beside the router. Ask for a wired speed check if performance looks wrong.
- Confirm the network name and password, and ask how to change them safely on your model.
- Photograph the equipment labels and installation layout for your private records. Keep serial numbers out of public posts.
- Confirm the activation date, installed package, and any remaining work. Save the service contact and order number.
Do not treat “application received” as a guaranteed installation date. If the visit is delayed or the building cannot support the ordered service, ask what is still pending, whether billing has begun, and what happens to the order. Keep a backup connection for your first important work meeting.
Wi-Fi is connected, but there is no internet: what to check
Separate a device problem from a connection problem before paying for an upgrade. Apple's Wi-Fi troubleshooting guidance recommends testing other devices and checking the router; if no devices can get online, the internet provider may need to investigate.
| What happens | Useful next check |
|---|---|
| Only one device fails | Confirm the correct network and password, restart that device, and test it on another known working connection. |
| Every device fails | Check the equipment's power and cable connections. Note warning lights and contact the provider if the problem persists. |
| It works beside the router but not at your desk | Ask about router placement or coverage. This does not by itself prove that the broadband plan is too slow. |
| It repeatedly drops or slows down | Record times and compare wired and Wi-Fi results where possible. Send the provider a short fault history, not only one speed-test screenshot. |
For equipment serving only your home, a power restart may help; follow the provider's instructions and allow it to reconnect. Do not press the recessed factory-reset button as a first step. Do not unplug a shared building network or handle exposed wiring.
When requesting a visit, ask whether a charge applies if the fault is in your own router or computer. Give the account holder's name, service address, error, and time it started through the provider's official channel. Never send a banking password or verification code to someone claiming to repair your connection.
Moving or leaving Korea: close the account, not just the door
If staying in Korea, ask about relocation (이전설치) before opening a second contract. Have the provider check the new address and quote any transfer charge. Ask whether the existing end date stays the same or a proposed offer starts a new commitment.
If the new address cannot be served, request a written availability result and ask which cancellation provisions apply. Do not assume that every move qualifies for a fee waiver.
For cancellation (해지), request an itemized calculation for your intended date. KT's FAQ explains that ending a long-term agreement early can require repayment of service and modem-rental discounts. It also explains that ordinary contract expiry does not automatically stop service, and postpaid charges can arrive after cancellation. Prepaid products have different expiry rules.
Ask this before agreeing to close the account:
이 날짜에 해지하면 할인반환금과 장비 반납 비용을 포함해 총 얼마를 내야 하나요? 문자나 이메일로 내역을 보내 주세요.
“If I cancel on this date, what is the total, including discount repayments and any equipment-return charges? Please send the breakdown by text or email.”
Arrange the return of rented equipment and keep proof of handover or shipment. Do not leave it for the next tenant unless the provider explicitly approves a formal transfer. Keep confirmation of the cancellation date and a way to receive the final bill. Stopping an automatic payment is not a cancellation request.
For the separate landlord side of moving out, see our guide to rental-deposit deductions and move-out disputes. Settling the lease and settling your internet account are separate tasks.
Official help when you cannot get the problem resolved
- KT: The Global Service Center lists 080-448-0100, Monday–Friday, 09:00–18:00 KST, with English, Chinese, Vietnamese, and Russian support. The prepaid internet page also lists a 12:00–13:00 lunch break (checked October 27, 2026). Confirm availability around public holidays; do not assume English consultation is available all night.
- SK Broadband: Its official 106 menu separates fault reports, cancellation/discount repayment, and relocation. Ask whether language assistance is available; this is not a promise of an English-speaking agent.
- LG U+: The official support page lists 101 for internet/IPTV/telephone support and provides diagnostics and installation-change help. Ask specifically for home internet assistance rather than mobile SIM support.
If a charge remains disputed, request a case number and a written explanation identifying the relevant contract term. Keep the original quote, contract, bills, cancellation confirmation, and correspondence together. The Korea Consumer Agency is an official starting point for consumer-help information if direct resolution fails; a complaint does not guarantee a refund or automatically suspend payment obligations.
Official product and support pages checked September 22, 2026. Prices and eligibility can change, and installation depends on the address. The checklists and suggested questions are practical preparation, not a universal document list or a promise of approval. Confirm the written terms of the exact product before ordering.
Updated October 27, 2026: Added the lunch break stated on KT’s prepaid internet page beside that product-specific source. General support hours and other provider terms remain unchanged.
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