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日本語版はこちら / Japanese version → 外国人の家のインターネット2026｜工事不要ですぐ使えるのはどれ？
Living on your phone’s data alone works for a while. Then, near the end of every month, it doesn’t — your speed drops, video calls with family freeze, and online banking on café Wi-Fi feels unsafe.
This guide explains the three ways to get internet at home in Japan, and why — for most foreign residents — the answer is not the one Japanese people usually choose.
Why fibre is the wrong first choice for most newcomers
Fibre optic internet (光回線 / hikari kaisen) is fast and cheap, and it’s what locals pick. But it comes with friction that hits newcomers hard:
- 1–2 month wait for an installation appointment — no internet until then
- 2-year contracts with cancellation fees if you move or leave Japan
- Installation needs the landlord’s permission — often refused in rentals
- Removal fees may be charged when you move out
If you move often, don’t know how long you’ll stay, or need internet now, fibre is too heavy. The practical answer is a home router — no installation required.
The three options compared
| Type | Monthly (incl. tax) | Installation | Ready in | Speed | Portable |
|---|---|---|---|---|---|
| Fibre | ¥4,000–6,000 | Required | 1–2 months | ◎ fastest | No |
| Home router | about ¥4,840 | None | Same day–days | ○ video OK | Home use |
| Pocket Wi-Fi | ¥3,000–4,000 | None | Same day–days | ○ | ◎ yes |
| Phone tethering | SIM cost only | None | Now | △ depends | ◎ |
The practical winner: a home router (Rakuten Turbo)
A home router plugs into a power socket and creates Wi-Fi — no cables, no engineer, no landlord permission. The best-known one is Rakuten Turbo.
- No installation — plug it in and use it the day it arrives; no landlord permission
- Unlimited data — video and family calls without worrying
- No contract lock-in — no cancellation fee when you move or leave Japan (important for foreign residents)
- Device effectively free with the current campaign (check the latest terms on the official site)
Honest caveat: a home router uses wireless signal, so it is less stable than fibre. In weak-signal areas or deep inside buildings it can slow down. If online meetings are your job or you play large online games, waiting for fibre is worth it.
Which one is right for you?
| Your situation | Best choice |
|---|---|
| Staying 2+ years, family at home, work from home | Fibre (worth the install wait) |
| Renting, moving often, unsure how long you’ll stay, need it now | Home router (Rakuten Turbo) |
| Want it outside too, living alone, lower usage | Pocket Wi-Fi |
| Barely use internet at home, want to save | Phone tethering |
If you live alone and use little data, you may not need home internet at all — an unlimited SIM with tethering can be enough. Check your phone plan first.
How to sign up
You need the same things as a SIM: your residence card, a Japanese address, and a payment method. If you haven’t registered your address yet, do that first — see our guides.
Want something portable? A pocket Wi-Fi (RakuRaku Wi-Fi) works at home and outside.
Frequently asked questions
Does it really work with no installation?
Yes. A home router just plugs into a power socket and connects to Wi-Fi. No cabling, no engineer visit — it works the day it arrives.
Can I get one in a rental apartment?
Yes. There is no building work, so you don’t need the landlord’s permission, and there are no removal fees when you leave.
Can I apply with just my residence card?
Yes. Identity is verified with your residence card. Enter your name and address exactly as written on it.
What happens when I leave Japan?
With a no-lock-in plan you can cancel with no penalty. If you paid for the device in instalments, check the remaining balance.
Is phone tethering enough?
If you live alone and use little data, it can be. Rakuten Mobile’s unlimited plan includes unlimited tethering. If you have family or watch a lot of video, a home router or fibre is better.
Summary
- Staying long, family, home office → fibre
- Renting, moving often, need it now → home router (Rakuten Turbo)
- Want it outside, lower usage → pocket Wi-Fi or phone tethering
For most foreign residents, a home router with no installation and no lock-in is the least stressful choice.
