Japan Internet Setup Guide for Foreign Residents (2026)
Getting connected to the internet in Japan is straightforward once you understand your options. This guide covers home broadband, pocket Wi-Fi, SIM cards, and everything foreign residents need to know to get online.
Table of Contents
- Your Internet Options in Japan
- Home Fiber Broadband (Hikari)
- Pocket Wi-Fi Routers
- SIM Cards and Data Plans
- Setup Process Step by Step
- Speeds and Costs Compared
- FAQ
Your Internet Options in Japan
Foreign residents in Japan have three main ways to get connected:
- Home fiber broadband (Hikari) — fastest and cheapest per GB, requires 1–3 year contract
- Pocket Wi-Fi router — portable, no installation, good for temporary stays
- SIM card / eSIM — smartphone data only, no separate router needed
Most long-term residents use fiber at home plus a SIM card for mobile data.
Home Fiber Broadband (Hikari)
Hikari (光) means fiber-optic internet. It is the standard for home broadband in Japan, offering speeds of 1 Gbps for around ¥4,000–¥6,000 per month including line and ISP fees.
Major Providers
| Provider | Monthly Cost | Speed | Contract |
|---|---|---|---|
| NTT Flets Hikari + ISP | ¥4,500–¥6,500 | Up to 1 Gbps | 2 years |
| NURO Hikari | ¥5,200 | Up to 2 Gbps | 2 years |
| SoftBank Hikari | ¥5,720 | Up to 1 Gbps | 2 years |
| au Hikari | ¥5,610 | Up to 1 Gbps | 2 years |
| docomo Hikari | ¥5,720 | Up to 1 Gbps | 2 years |
Applying for Hikari as a Foreigner
You can apply for fiber broadband in Japan as a foreign resident. Requirements typically include:
- Valid residence card (在留カード / Zairyu Card)
- Japanese bank account or credit card
- Japanese phone number
- Landlord permission if renting (installation requires technician visit)
Note: Some ISPs require a Japanese guarantor or credit check. NURO Hikari is generally foreigner-friendly.
Installation Timeline
After applying, expect 2–4 weeks for installation. The technician visit takes 1–2 hours. The modem and router are usually provided.
Pocket Wi-Fi Routers
Pocket Wi-Fi (also called mobile Wi-Fi routers) are portable LTE/5G devices that create a Wi-Fi hotspot. They are ideal for foreigners who have just arrived, are in temporary housing, or move frequently.
Key Providers
- Rakuten Mobile — ¥3,278/month unlimited (no router rental needed if using phone tethering)
- SoftBank Air — ¥5,368/month, no installation, fast 5G home router
- WiMAX +5G — ¥4,268–¥4,950/month, portable, good rural coverage
- NTT docomo home router — ¥4,950/month
Pros and Cons
| Factor | Pocket Wi-Fi | Fiber |
|---|---|---|
| Speed | 100–500 Mbps typical | 500–1,000 Mbps |
| Installation | None (plug and play) | Technician required |
| Contract | Monthly or 2-year | 1–3 years |
| Cost/month | ¥3,000–¥5,500 | ¥4,500–¥6,500 |
| Data limit | Some throttle after 15 GB/day | Unlimited |
SIM Cards and Data Plans
Japan has competitive MVNO (virtual network) SIM cards available without long contracts. These provide mobile data for your smartphone.
Popular SIM Options for Foreigners
- Rakuten Mobile — ¥0–¥3,278/month depending on usage, unlimited with Rakuten ID
- IIJmio — from ¥850/month for 2 GB, reliable docomo network
- Mineo — from ¥990/month, multiple network options (docomo/au/SoftBank)
- ahamo (docomo) — ¥2,970/month for 20 GB, English support available
- LINEMO (SoftBank) — ¥990/month for 3 GB or ¥2,728 for 20 GB
Buying a SIM as a Foreigner
You will need:
- Residence card (在留カード)
- Credit card (Japanese or international) for monthly billing
- Japanese address
- SIM-unlocked phone
Tourist SIMs are also available at airports and convenience stores, but these are data-only and do not support voice calls.
Setup Process Step by Step
For Fiber Broadband
- Choose a provider and apply online or at a shop (some have English staff)
- Confirm installation date with technician
- Have technician run fiber cable to your apartment (may need landlord permission)
- Connect the ONT (fiber modem) and router provided
- Configure Wi-Fi using the default SSID/password on the router label
- Change default password for security
For SIM Card
- Choose a carrier and plan online or at an electronics store (Yodobashi, Bic Camera)
- Present residence card and complete identity verification
- Insert SIM or scan eSIM QR code
- Configure APN settings if not automatic (carrier provides these)
- Test call and data connection
Speeds and Costs Compared
Japan consistently ranks among the world’s fastest internet countries. Real-world speeds measured by Ookla Speedtest (2025 data):
- Fixed broadband median: ~200 Mbps download
- Mobile median: ~100 Mbps download
- Fiber connections often achieve 500–900 Mbps in practice
Monthly costs for a typical resident: ¥5,500 fiber + ¥2,970 mobile SIM = ~¥8,470/month total (~$55 USD).
Frequently Asked Questions
Can foreigners sign up for internet in Japan?
Yes. Any resident with a valid residence card can sign up for home broadband and SIM cards. You do not need permanent residency or Japanese citizenship.
Do I need a Japanese bank account?
Most providers prefer Japanese bank account debit or Japanese credit card. Some MVNOs accept international credit cards. Rakuten Mobile accepts international Visa/Mastercard.
Is there English support?
IIJmio and ahamo offer English language support. Most major providers have English-language websites for applications.
Can I keep my number when switching?
Yes, Japan has mobile number portability (MNP). You can switch carriers while keeping your Japanese phone number. Request an MNP transfer code from your current carrier before switching.
What if I move apartments?
For fiber, you need to cancel and reapply at the new address. Pocket Wi-Fi and SIM cards move with you automatically.
Last checked: May 2026. Prices and plans may change. Confirm current rates with providers before signing up.