Best eSIM by destination → Japan
Best eSIM for Japan (2026)
Japan sits outside EU roaming rules, so UK and Irish networks charge daily rest-of-world rates there — and those days stack fast on a two-week trip. A travel eSIM sidesteps that entirely: buy online in minutes, install it before you fly, and land with data from $12.00.
And whatever shape the trip takes — Tokyo's trains and neon, Kyoto's temples, a week skiing in Hokkaido, or a beach finish in Okinawa — the maths is the same. We compared the two providers worth considering for Japan below. Both are data-only (no Japanese phone number), both install alongside your existing SIM, and both beat roaming on price for any trip longer than a day or two.
Best eSIM for Japan: Get Japan eSIM — 10GB for $15.00, valid 10 days, on 4G LTE, hotspot included. Buy and install it before you fly; the plan only starts counting down when you first connect in Japan.
See Get Japan eSIM plansJapan eSIM comparison
Prices checked 28 October 2026, from the providers' own pages. Always confirm the final price before you buy.
| Provider | Data | Validity | Price | Hotspot allowed | Calls or data-only | |
|---|---|---|---|---|---|---|
| Get Japan eSIM | 3GB, 10GB, or Unlimited | 5, 10 or 30 days | From $12.00 | Yes — on every plan | Data only — no phone number; use WhatsApp/FaceTime for calls | View plans |
| Dingo | Country plans — sizes shown in the Dingo app | See app | See app | Check the plan terms in the app | Data only — no phone number or SMS; the app also sells a separate pay-as-you-go calling balance | View plans |
Get Japan eSIM's Japan plans in full
| Data | Validity | Price | Per GB |
|---|---|---|---|
| 3GB | 5 days | $12.00 | $4.00 |
| 10GB | 10 days | $15.00 | $1.50 |
| Unlimited | 30 days | $36.00 | — |
Get Japan eSIM keeps it to three plans, which is the point: no sorting through dozens of overlapping options. All three include hotspot, instant QR delivery by email, and no ID requirement. Dingo sells its Japan plans inside the Dingo app rather than on a public price page, so open the app to see its current sizes and prices before deciding.
Best eSIM for Japan by traveller type
Best overall — Get Japan eSIM 10GB / 10 days ($15.00)
Covers a normal one-to-two-week holiday comfortably, works out at $1.50 per GB, and the 10-day validity means you are covered even if your dates shift a little.
Get the Get Japan eSIM 10GB plan
Best cheap option — Get Japan eSIM 3GB / 5 days ($12.00)
Enough for a short city break if you are mostly on hotel Wi-Fi: maps, messaging and light browsing. The lowest entry price of any Japan eSIM on this page.
Get the Get Japan eSIM 3GB plan
Best for a long trip — Get Japan eSIM Unlimited / 30 days ($36.00)
For a three- or four-week trip, or heavy daily use. One plan, no counting gigabytes, no buying twice mid-trip.
Get the Get Japan eSIM Unlimited plan
Best if you also need to make real calls — Dingo
The eSIM itself is data-only like the rest, but Dingo's app bundles a pay-as-you-go internet calling balance alongside it, so you can ring landlines and non-WhatsApp numbers without a second app. Check its Japan plan sizes and prices in the app.
Coverage and speed in Japan — honestly
Get Japan eSIM connects to a major Japanese mobile network — the same kind of network Japanese customers use, not a throttled tourist band — with 4G LTE coverage across all 47 prefectures, from Sapporo to Okinawa, according to its own site. Expect strong coverage in Tokyo, Osaka, Kyoto and Fukuoka, and on the main tourist routes between them. Note that these plans are 4G LTE, not 5G.
The honest caveats:
- Remote areas drop off. Mountain roads, remote islands and stretches of rural Hokkaido have weak or no signal on any network — eSIM or local SIM alike. Download offline maps before you head out.
- Speeds vary with congestion. Tokyo stations at rush hour are slower than a quiet town on a weekday. That is true of every provider.
- One eSIM, one phone. Each QR code can normally be installed once — if you delete the eSIM or change phones, contact Get Japan eSIM's support team, which its site says is available 24/7 by email.
Neither provider asks for ID verification or a passport scan to buy — a genuine advantage over airport SIM desks.
How much data do you actually need?
Rough real-world usage, per hour of active use:
- Google Maps / navigation: 5–10MB
- WhatsApp and messaging: next to nothing
- Instagram / Facebook browsing: 100–200MB
- Video calls (WhatsApp, FaceTime): 250–500MB
- Streaming video in HD: around 1GB
As a rule of thumb for a week in Japan:
- Light week (maps, messaging, hotel Wi-Fi in the evenings): 2–3GB
- Normal week (social media, photos, some video): 5GB
- Heavy week (hotspot use, daily video calls, two devices): 10GB or more
When in doubt, size up one tier. The jump from 3GB to 10GB on Get Japan eSIM is $3.00 — cheaper than any top-up or second purchase mid-trip.
How to install your Japan eSIM
Do this at home on Wi-Fi, before you fly. It takes about five minutes, and you need Wi-Fi to activate it.
- Check your phone. Dial
*#06#— if you see an EID number, your phone supports eSIM. It also needs to be carrier-unlocked. - Buy your plan. Pick your data amount and pay online; your QR code arrives by email within minutes.
- Install it. iPhone: Settings → Mobile Service → Add eSIM → scan the QR code. Android: Settings → Network / Connections → SIMs → Add eSIM → scan. The Japan plan sits alongside your normal SIM — nothing gets removed.
- When you land, switch the Japan eSIM line on, turn Data Roaming ON for the eSIM line, and set it as your data line. Roaming on the eSIM line is included in the plan price — there are no extra charges.
- Keep your home SIM switched on for calls, texts, WhatsApp and bank security codes. Only your data routes through the eSIM.
Your plan's validity starts when the eSIM first connects to a network in Japan — not when you buy or install it. Installing early costs you nothing.
eSIM vs roaming vs local SIM in Japan
| Option | What a trip costs | The catch |
|---|---|---|
| Travel eSIM (Get Japan eSIM 3–10GB) | $12.00–$15.00 total | Data only — calls go over WhatsApp |
| UK / Irish roaming | Daily rest-of-world charges — check your network's Japan rate | Daily charges stack fast on a two-week trip; Japan is outside every network's inclusive EU roaming |
| Local tourist SIM (airport desk) | Varies — usually well above the eSIM price | Passport checks, airport queues, slow activation |
For anything from a long weekend upward, the eSIM wins on price and convenience. Roaming only competes on a one-day trip — and even then, a $12.00 eSIM is usually cheaper than a day or two of rest-of-world roaming. The local SIM made sense a decade ago; now you are paying more to stand in a queue.
Japan eSIM FAQs
What is the cheapest eSIM for Japan?
Get Japan eSIM's 3GB plan — 5 days' validity for $12.00 (checked 28 October 2026) — is the cheapest Japan eSIM on this page. For a week or more, its 10GB plan at $15.00 works out cheaper per gigabyte.
What is the best eSIM for Japan for iPhone?
Any plan on this page works on iPhone XS and newer, provided the phone is carrier-unlocked. Our pick is Get Japan eSIM's 10GB plan: install it in Settings → Mobile Service → Add eSIM before you fly, and it connects automatically when you land.
Can I buy an eSIM for Japan before I travel?
Yes — and you should. Get Japan eSIM plans only start counting down when the eSIM first connects to a network in Japan, so buying and installing a week early wastes no validity and saves you fiddling at the airport. Install on Wi-Fi at home.
Does an eSIM for Japan include a phone number?
No. Travel eSIMs for Japan are data-only: no Japanese number and no SMS. Make calls over WhatsApp, FaceTime or Messenger, and keep your home SIM active for texts and bank codes. Dingo's app also sells a separate pay-as-you-go calling balance alongside its eSIM data, if you need to ring ordinary numbers.
What is the best eSIM for Tokyo?
The same country plans — Tokyo has Japan's strongest coverage. For a city break, Get Japan eSIM's 10GB plan (10 days, $15.00) covers maps, transit apps, translation and social media comfortably.
What is the best eSIM for Japan for 7, 14 or 30 days?
7 days: 10GB for $15.00, valid 10 days. 14 days: no 14-day Get Japan plan is listed on its site, so the Unlimited plan for $36.00 (30 days) is the one-purchase option, or buy two 10GB plans. 30 days: Unlimited for $36.00. All Get Japan prices, checked 28 October 2026.
The verdict
For most trips to Japan, Get Japan eSIM's 10GB plan at $15.00 is the one to buy: a week of roaming on most networks costs far more, it installs in five minutes before you fly, and the hotspot is included. Pick the 3GB plan if you are only there for a few days and mostly on hotel Wi-Fi, or the Unlimited plan if you are staying a month — and check Dingo's in-app Japan prices first, because they are not published on the web.
Get the Get Japan eSIM 10GB Japan plan — $15.00
Prices on this page were checked on 28 October 2026 and can change — confirm the final price with the provider before you buy. This page contains affiliate links; see ouraffiliate disclosure. More destinations:best eSIM by destination.