Korea is famous for fast, affordable home broadband, and getting connected is usually painless once you know the steps. Fiber reaches the vast majority of homes, installation visits are quick, and even the cheaper tiers are fast enough for streaming, video calls and gaming for most households.
The part that trips up newcomers is not the technology but the paperwork and the contracts — the documents you need, the multi-year commitments, the cashback offers that come with strings attached, and figuring out whether your apartment already has a line. This guide walks through choosing a provider, the installation, bundles, and the special cases you will run into when you move in.
The main internet providers
Three large ISPs dominate home internet: KT, SK Broadband, and LG U+. All three deliver the fast, reliable service Korea is known for, and there is rarely a dramatic difference in everyday quality between them. Your choice often comes down to which one offers the best bundle with your mobile carrier, the best promotion at the time, or which is already wired into your building.
Plans are sold in speed tiers, often labelled by their headline fiber speed. The important thing to know is that most homes get plenty of speed even on the cheaper tiers — you do not need the top plan unless you have heavy simultaneous use or move very large files regularly.
What you need to sign up
Signing up as a resident is similar to setting up a phone plan. You will generally need:
- Your Alien Registration Card (ARC).
- A Korean bank account or card for automatic monthly billing.
- A Korean phone number for contact and verification.
- Willingness to commit to a contract, commonly two to three years, that includes installation.
If your Korean is limited, an agent who speaks English, a bilingual friend, or your building's preferred installer can make the call and booking far easier. Many landlords or building managers can point you to the ISP and installer that already service the building.
The installation visit
After you sign up, the ISP schedules a technician to visit, often within a few days. The technician runs or activates the line, sets up the modem, and provides a Wi-Fi router so you have wireless throughout your home. The visit is usually short. Make sure someone who can communicate basic details is present, and keep the router's network name and password somewhere safe.
Your router and Wi-Fi
The provided router handles Wi-Fi for the whole home. If coverage is weak in a far room, you can ask about a mesh extender or use your own router, though using your own may complicate support calls. For a quick connection on day one before installation, you can tether from your phone — see how data works in our guide to Korean mobile phone plans.
Bundles, IPTV and cashback
ISPs heavily promote bundles — internet plus mobile plus IPTV (TV over internet) — with discounts and upfront cashback offers. Bundling can genuinely lower your combined bill, and the cashback can be substantial. But read the conditions carefully.
When the apartment already has internet
Two common situations come up when you move in. First, some apartments include internet in the monthly maintenance fee (관리비) — in that case you may not need your own contract at all, so check before signing up. Second, a previous tenant may have left an active line. You can sometimes transfer that line into your name (a "transfer," 명의변경) rather than ordering a brand-new installation, which can be faster and avoid a new install fee.
Ask your landlord or building manager which applies to your unit. Sorting this out is part of a smooth move — see our broader moving-in checklist for Korea, and browse more in the Phone & Internet section.
Short-term and no-contract options
If you are only staying a few months, a multi-year contract makes no sense. Alternatives include renting a pocket Wi-Fi (egg) device, leaning on your phone's hotspot with a generous data plan, or asking whether a short-term internet arrangement is available. These cost more per month than a standard contract but avoid early-termination penalties.
Comparing your options
| Option | Best for | Commitment | Notes |
|---|---|---|---|
| Standard ISP contract | Settled residents | 2–3 years typically | Cheapest monthly, install included |
| Bundle (net + mobile + IPTV) | Households wanting TV and savings | 2–3 years | Cashback ties you in |
| Included in maintenance fee | Some apartments | None extra | Check before ordering your own |
| Pocket Wi-Fi / hotspot | Short stays | Flexible | Pricier per month, no penalty |
Wrapping up
For most residents, signing a standard contract with one of the three big ISPs gets you fast, reliable internet at a low monthly cost — just check whether your building already includes a line or has a transferable one first. Read the cashback conditions before you celebrate, keep a short-term option in mind if your stay is brief, and you will be online quickly. For the apps you will want once connected, see our guide to essential Korean apps.