Setting Up Home Internet in Japan: Contracts and Install Day

Home internet in Japan is fast once it is running, but getting there involves a contract full of terms and, often, a technician visiting your home.

A home router with a contract leaflet beside it
What you need to know

Setting Up Home Internet in Japan: Contracts and Install Day

Setting up internet usually means choosing between a fibre line and a router that needs no installation, signing a contract with specific terms, and sometimes arranging an installation visit that needs your landlord's permission. Later you may need to call support or cancel when you move. This guide covers the Japanese for each step. Plans, prices and conditions vary between providers and buildings, so compare them and confirm details before you sign.

Decide first whether you need a fibre line or a router with no installation

Contract length and cancellation fees matter as much as the monthly price

An installation visit may need your landlord's permission and your presence

Learn a few support phrases before something goes wrong

Choosing the type of connection

The first decision shapes everything else. A fibre line is usually the most stable but may need installation, while a home router plugs in and works over a mobile network with no visit.

JapaneseRomajiMeaning
光回線hikari kaisenFibre-optic line
ホームルーターhōmu rūtāHome router
モバイルルーターmobairu rūtāMobile router
プロバイダpurobaidaInternet provider
TypeInstallationGood for
Fibre lineOften neededStable, heavy use such as video calls and streaming
Home routerUsually not neededQuick setup and shorter stays
Mobile routerNot neededUsing the same connection at home and outside

Contract words

The monthly price is only one part of the cost. Contract length, installation fees and cancellation fees can change the total, so learn these words before you compare plans.

JapaneseRomajiMeaning
月額料金getsugaku ryōkinMonthly fee
初期費用shoki hiyōInitial costs
工事費kōjihiInstallation fee
契約期間keiyaku kikanContract term
違約金iyakukinCancellation fee
開通日kaitsūbiDate the line becomes active

Questions before you sign

Sales conversations move quickly and often include extra options. Ask your key questions in order and decline extras you do not need.

Confirming whether your building already supports a particular line can save a lot of time.

JapaneseRomajiMeaning
工事は必要ですか。Kōji wa hitsuyō desu ka.Is installation needed?
最低何年の契約ですか。Saitei nannen no keiyaku desu ka.What is the minimum contract length?
途中で解約したら、違約金はかかりますか。Tochū de kaiyaku shitara, iyakukin wa kakarimasu ka.If I cancel early, is there a cancellation fee?
この建物で使えるか確認してもらえますか。Kono tatemono de tsukaeru ka kakunin shite moraemasu ka.Could you check whether it works in this building?
オプションはいりません。Opushon wa irimasen.I do not need any extra options.

The installation visit

If installation is needed, a technician visits on an agreed date, and someone usually needs to be present. Check with your landlord or management company before booking, since some work needs their permission.

Visits are often given as a time window, so ask for a rough arrival time and how long it will take.

JapaneseRomajiMeaning
立ち会いが必要ですか。Tachiai ga hitsuyō desu ka.Does someone need to be present?
大家さんの許可が必要ですか。Ōya-san no kyoka ga hitsuyō desu ka.Do I need my landlord's permission?
何時ごろ来ますか。Nanji goro kimasu ka.Around what time will you come?
工事にはどのくらいかかりますか。Kōji ni wa dono kurai kakarimasu ka.How long will the installation take?
工事の日を変更したいです。Kōji no hi o henkō shitai desu.I would like to change the installation date.

When the connection does not work

Support lines ask a standard set of questions: what is happening, which lights are on, and whether you have restarted the equipment. Having those answers ready shortens the call.

Describe what you see rather than guessing the cause.

JapaneseRomajiMeaning
ネットにつながりません。Netto ni tsunagarimasen.I cannot connect to the internet.
ランプが赤く点滅しています。Ranpu ga akaku tenmetsu shite imasu.A light is flashing red.
ルーターを再起動しました。Rūtā o saikidō shimashita.I restarted the router.
パスワードはどこに書いてありますか。Pasuwādo wa doko ni kaite arimasu ka.Where is the password written?
昨日から遅いです。Kinō kara osoi desu.It has been slow since yesterday.

Moving and cancelling

When you move, you can usually either transfer the service to the new address or cancel it. Ask about both before deciding, and check what happens to rented equipment.

Returning the router correctly matters, since unreturned equipment can be charged.

JapaneseRomajiMeaning
引っ越しするので、解約したいです。Hikkoshi suru node, kaiyaku shitai desu.I am moving, so I would like to cancel.
引っ越し先でも使えますか。Hikkoshisaki demo tsukaemasu ka.Can I use it at my new address?
ルーターはどうやって返却すればいいですか。Rūtā wa dō yatte henkyaku sureba ii desu ka.How should I return the router?
解約はいつまでに連絡すればいいですか。Kaiyaku wa itsu made ni renraku sureba ii desu ka.By when should I contact you to cancel?

Rehearsing the calls

Most internet conversations happen by phone, where there are no gestures to help. Preparing your questions and practising them aloud makes a real difference.

Unihongo's Reserve a Restaurant by Phone and Reschedule a Missed Delivery roleplay missions train catching dates, times and conditions on a call, and the corrections in the session report show which requests came out unclear.

  • Write your address and building name clearly for the call.
  • Prepare questions about installation, contract length and fees.
  • Keep your contract number where you can find it.
  • Note the support hours before you need them.
Key points

A practical way to improve

Say your four questions for the sales conversation aloud: installation, contract length, cancellation fee and whether the line works in your building. The Reschedule a Missed Delivery roleplay mission in Unihongo trains the same skill of arranging and changing a visit time by phone.

  1. 1

    Choose one clear goal

    Focus each session on a situation or skill you can actually use.

  2. 2

    Practice actively

    Say complete answers aloud instead of only reading or recognizing Japanese.

  3. 3

    Review and repeat

    Keep useful corrections and revisit the same skill until it feels natural.

FAQ

Frequently asked questions

What does hikari mean for internet?

Hikari means light, and it refers to fibre-optic internet. A hikari line is usually faster and more stable, but it can require an installation visit.

Do I need permission from my landlord?

If installation involves work in the building, you may need permission from the landlord or management company. Ask them before booking, and tell the provider what they said.

What is iyakukin?

It is a cancellation fee charged if you end a contract before its minimum term. Ask about it before signing, because it can matter if you might move.

Is there an option without installation?

Home routers and mobile routers usually work without installation, but speed and data conditions differ from fibre. Compare them based on how you use the internet.

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