Japan eSIM
How it works
Stopping in Seoul or Busan too?
Tokyo to Seoul is a two-hour flight and Fukuoka to Busan a ferry ride. Pick a plan that covers Korea and your eSIM switches network by itself when you land.
Questions about Japan
Yes — cities, countryside, train lines and most subway stations, wherever your plan’s network has coverage.
Whole trip gives one allowance for your stay. Per day resets every 24 hours or at midnight, depending on the plan. Most “unlimited” plans slow down after heavy use under a fair-use policy in the fine print. Ours show the actual speed up front — pick the one that suits you.
Local plans run directly on a Japanese carrier instead of roaming, and your IP address is in Japan. They’re often faster.
Yes. Every plan on this page works in Okinawa and on Japan’s other islands, on the same Japanese networks, wherever they have coverage. There’s nothing extra to buy.
It depends on the plan: Hong Kong, Singapore, Poland, UK or Japan. Apps and websites see you as connecting from there — that’s why ChatGPT or TikTok work on some plans and not others. Most eSIM stores don’t tell you this. Apps can still change their own rules, and local laws apply where you are.
When you first connect in a covered destination — not when you buy or install. Install it the day before you fly.
Travelling nearby?
Plans and prices for destinations often combined with Japan.
South Korea eSIM 
China eSIM 
Hong Kong eSIM 
Macau eSIM 
Taiwan eSIM 
Singapore eSIM 
Thailand eSIM 
Malaysia eSIM
Japan eSIM at a glance
Full specs for every plan — networks, IP location, hotspot, installs
Show specsHide specs
| Networks | KDDI, SoftBank, NTT Docomo and IIJ on NTT Docomo · 5G |
|---|---|
| IP address in | Hong Kong, Singapore, Poland, UK or Japan, depending on the plan — each plan shows its own. This decides which apps and sites work. |
| Plan types | Whole-trip, Per-day, Unlimited |
| Price | from $4.00 SGD · best rate $0.54 SGD/GB |
| When the data runs out | Slows to 128 kbps or 200 kbps on some plans, stops on others. Unlimited plans never stop. |
| Daily allowance resets | Depends on the plan: at midnight, Beijing / Singapore time (UTC+8); every 24 hours from first connection; at midnight, Japan time (UTC+9) |
| Reinstalling | Travel eSIMs can be reinstalled on the same device only. Some local SIM lines install once only — marked on each plan. |
| How days count | Most plans: 24-hour periods from first connection. Local KDDI plans: calendar days in Japan time, ending at midnight. |
| Coverage options | Japan only · Japan + South Korea · Japan + China + South Korea · East & Southeast Asia + 5 more |
| ChatGPT, Gemini & TikTok | ChatGPT and Gemini work on selected plans · TikTok works on some plans and on iPhone only (iOS 17.4+) on others. Based on each plan’s IP country — apps can change their own rules, and local laws apply where you are. |
| Hotspot | Supported on travel eSIMs. Local SIM lines vary — some cap it or need extra setup; each plan shows its own. |
| Phone number | None — data only. Your own SIM keeps your number for calls and texts. |
| Install window | 90 or 180 days from purchase, depending on the plan — each plan shows its own |
| Refunds | Full refund within 30 days if unused · local SIM lines (like KDDI) can’t be refunded — each plan shows its own |
Pakyo Japan eSIMs run on KDDI, SoftBank and NTT Docomo with 5G. Plans from $4.00 SGD (best rate $0.54 SGD per GB), delivered as a QR code by email in minutes. Data-only — your own number keeps working; ChatGPT and Gemini work on selected plans; TikTok works on some plans and on iPhone only (iOS 17.4+) on others. Your IP address will be in Hong Kong, Singapore, Poland, UK or Japan, depending on the plan. Days start at first connection, not at purchase.
Prices checked September 2026 · Sold by Pakyo