Updated 11 October 2026. This page contains affiliate links: if you buy through them, fly-jpn earns a commission at no extra cost to you. We only recommend what we’d use ourselves.
Quick answer: Most people visiting Japan in 2026 should get an eSIM. It’s cheaper, there’s nothing to carry or return, and you’re online the moment you land. Get a pocket WiFi instead if you’re travelling as a group or family, your phone is carrier-locked, or you need to connect a laptop all day.
Prices are Sakura Mobile’s “from” prices including tax, checked 11 Oct 2026.
eSIM or Pocket WiFi? Pick in 10 Seconds
| Your trip | Best choice | Why |
|---|---|---|
| Solo or couple, phone is unlocked | eSIM | Cheapest, nothing to carry, no return trip to a postbox |
| Family or group of 3 or more | Pocket WiFi | One device and one price, everyone connects |
| Phone is locked to your carrier (common with US phones on a payment plan) | Pocket WiFi | eSIMs need an unlocked phone; WiFi works with any device |
| Working on a laptop every day | Pocket WiFi | No tethering cap, and it saves your phone battery |
| Short trip, light use, already have a roaming pass | Roaming | Fine if your carrier’s daily pass is cheap, but check the price first |
| Long stay (1 to 3 months) | eSIM (or SIM) | Plans run up to 90 days |
See eSIM plans · See pocket WiFi prices
Do You Even Need Mobile Data in Japan?
Yes. Free WiFi exists in stations, convenience stores and hotels, but it’s patchy and often needs a sign-up each time. You’ll want data all day for Google Maps, train routes and transfers, translating menus and signs, booking restaurants, and showing QR tickets. Without data, getting around a big station like Shinjuku or Osaka-Umeda is far harder.
Japan eSIM: Best for Most Travellers
An eSIM is a digital SIM you install by scanning a QR code. Buy it before you fly, install it at home on WiFi, and switch it on when you land. Your home SIM stays in the phone, so you can still get texts from your bank.
- Price: Sakura Mobile’s travel eSIM starts at ¥1,375 including tax, with plans from 1 to 90 days.
- Plans: Unlimited on au’s 5G network, or 3GB a day on docomo’s 5G network (slowed to 1Mbps after 3GB in a day).
- Data only: there’s no Japanese phone number. Use WhatsApp, LINE or FaceTime for calls.
- Hotspot: you can share data with a laptop or a partner’s phone. The Unlimited plan has a hotspot cap, so check the plan page.
Check before you buy an eSIM
- Your phone must be unlocked. Phones from the US that are still on a payment plan are often locked. Ask your carrier if you’re not sure.
- Your phone must support eSIM. Most iPhones from the XS onward and recent Pixel and Galaxy models do. Check compatibility.
- Install it before you fly, while you’re on WiFi. Switch it on after landing.
Pocket WiFi Japan: Best for Groups and Locked Phones
A pocket WiFi is a small rented router that makes its own WiFi network for your phones, tablets and laptop. Turn it on and connect, with no settings to change.
- Price: Sakura Mobile’s travel pocket WiFi starts at ¥329 a day including tax, with unlimited data. Longer rentals get a lower day rate.
- Works with locked phones and with anything that has WiFi.
- One device for everyone: one rental and one price covers the whole group, so compare it against the cost of an eSIM for each person.
- The trade-offs: it’s one more thing to charge and carry, the group has to stay together, and you have to post it back before you fly home.
Pocket WiFi Pickup and Return
Rent your pocket WiFi in advance and collect it where it suits you:
| Airport | Sakura Mobile counter (as of 11 Oct 2026) |
|---|---|
| Narita | Terminal 1 (South Wing) and Terminal 2, JAL ABC counter in the arrival lobby, 6:30 AM until 1 hour after the last international arrival. No counter at Terminal 3, so use Terminal 2. |
| Haneda | Terminal 3, JAL ABC counter (Arrival Lobby 2F), closed 1 AM to 4 AM. No counter at Terminal 2. |
| Kansai (Osaka) | Terminal 1, Sakura Mobile counter (Arrival Lobby 1F), 6 AM to 11 PM. No counter at Terminal 2. |
| Fukuoka | International Terminal, Sakura Mobile counter (Arrival Lobby 1F), 7 AM to 9 PM. |
| New Chitose (Sapporo) | Post office pickup in the domestic terminal. |
Other options: delivery to your hotel (collect it when you check in), pickup at a post office, or pickup at Sakura’s Shinjuku office. Returning it: put it in the prepaid envelope and drop it in any Japan Post postbox, including those at airports and all Lawson convenience stores. Do this before airport security, because there are no postboxes airside.
See all pickup options at Sakura Mobile
Pocket WiFi vs eSIM vs SIM vs Roaming
| eSIM | Pocket WiFi | Physical SIM | Roaming | |
|---|---|---|---|---|
| Typical cost | Lowest | Low per person in groups | Low | Often highest |
| Setup | Scan a QR code | Turn it on | Swap the SIM | None |
| Works with a locked phone | No | Yes | No | Yes |
| Share with others | Hotspot (may be capped) | Yes, built for it | Hotspot | Depends on the carrier |
| Something to carry or return | No | Yes | No (throw it away) | No |
| Keeps your home number active | Yes | Yes | No (the SIM is swapped out) | Yes |
Phone doesn’t support eSIM? A travel SIM card does the same job. You can collect it at the airport and throw it away after your trip.
How to Get Online When You Land
- Before you fly: buy your eSIM or book your pocket WiFi for your arrival airport. Install the eSIM at home on WiFi.
- On landing: switch the eSIM on (and turn on data roaming for that line), or collect your WiFi at the counter. Bring your passport.
- Test it before leaving the airport: open Google Maps and look up your route to the hotel.
- Going home: post the WiFi back before security. The eSIM simply expires.
Frequently Asked Questions
Is an eSIM or pocket WiFi better for Japan?
For most solo travellers and couples, an eSIM. It’s cheaper, there’s nothing to carry, and nothing to return. Pocket WiFi is better for groups, families, carrier-locked phones and heavy laptop use.
How much does pocket WiFi cost in Japan?
Sakura Mobile’s travel pocket WiFi starts at ¥329 a day including tax, with unlimited data, and longer rentals get a lower day rate (checked 11 Oct 2026). Exact prices depend on your dates.
How much is a Japan eSIM?
Sakura Mobile’s travel eSIM starts at ¥1,375 including tax, with plans from 1 to 90 days (checked 11 Oct 2026). See prices for your dates.
Can I pick up pocket WiFi at the airport in Japan?
Yes. Sakura Mobile has counters at Narita (Terminals 1 and 2), Haneda (Terminal 3), Kansai (Terminal 1) and Fukuoka, plus a post office pickup at New Chitose. Book in advance and bring your passport.
Will an eSIM work with my phone?
Only if your phone supports eSIM and is unlocked. If your carrier has locked it, rent a pocket WiFi instead, because that works with any device.
Do I get a Japanese phone number?
Not with travel data plans: they’re data only. Use WhatsApp, LINE, FaceTime or Google Voice for calls.
Does it work on the Shinkansen and in rural areas?
Coverage on Japan’s main networks is wide, including along the Shinkansen lines, though tunnels and mountain areas can drop out briefly. Outside the cities, 5G falls back to 4G.
Is free WiFi in Japan good enough?
Not for most trips. It’s fine in hotels and cafés, but you’ll need data on the street for maps, trains and translation.
The Bottom Line
Get an eSIM if your phone supports it. Rent a pocket WiFi if you’re a group, your phone is locked, or you work on a laptop. Either way, sort it out before you fly so you’re online from the arrivals hall.
Sources: Sakura Mobile travel eSIM, pocket WiFi, pickup and return and compatibility pages, read 11 Oct 2026.
