Every few months a friend messages us from abroad asking: "do I need to rent a pocket Wi-Fi for Japan?" A few years ago the answer was yes. In 2026, the answer is almost certainly no. The way travellers stay connected in Japan has changed completely, and most of the advice online hasn't caught up. Here's what actually works — and what's a waste of money now.
The short answer
For most visitors in 2026: get an eSIM before you leave home. It takes five minutes, costs around ¥2,000–3,000 for a week of data, and you don't have to pick anything up, return anything, or worry about a device dying mid-trip.
If your phone doesn't support eSIM: get a physical data SIM at the airport when you land. Convenient, reliable, done.
Pocket Wi-Fi: unless you're travelling in a group of four or more and splitting one device, there's almost no reason to rent one anymore.
Option 1 — eSIM (our recommendation for most people)
An eSIM is a digital SIM card you install on your phone before you travel. No physical card, no picking up anything at the airport, no queuing at a counter.
Japan is well-covered by eSIM providers. The ones we hear good things about from travellers:
- Airalo — the most widely used eSIM marketplace, competitive pricing
- IIJmio and NTT Docomo — Japanese carriers that offer tourist eSIMs
- Your own carrier's international roaming eSIM — worth checking, sometimes surprisingly reasonable now
Most eSIMs are data-only (no Japanese phone number), which is fine for the vast majority of travellers. You'll use WhatsApp, LINE, or FaceTime for calls.
💡 Tip: Buy and install your eSIM before you get on the plane. You'll want to be connected the moment you land to figure out trains, maps, and where you're eating.
Option 2 — Physical SIM at the airport
If your phone doesn't support eSIM (or you just prefer the physical option), Japan's main airports — Narita, Haneda, Kansai — all have counters selling tourist SIM cards. The main options:
- IIJmio, OCN, and b-mobile tourist SIMs are the most common
- Usually sold in 7-day, 15-day, or 30-day packages
- Prices are reasonable — around ¥2,000–4,000 for a couple of weeks of data
- Data-only (calling via apps works fine)
These are reliable and widely tested by visitors. The main downside is the queue at the airport counter when everyone else is also trying to buy one. If you can do eSIM, you bypass this entirely.
🇯🇵 From us: We set up Japanese SIMs for visiting friends fairly often and the airport SIM counters are genuinely well-run these days. But they do get busy right after international flights arrive. Either go early or do eSIM and skip it entirely.
Option 3 — Pocket Wi-Fi (probably not worth it anymore)
Pocket Wi-Fi used to be the go-to recommendation for Japan — a little device that creates a Wi-Fi hotspot you carry with you. It was great when Japan's tourist SIM options were limited and expensive.
In 2026, the reasons to rent one are pretty narrow:
- You're travelling in a group and want to share one connection (though everyone having their own eSIM is actually simpler)
- You have an older phone with no eSIM support and a SIM slot that uses an unusual size
- You're renting equipment locally and need to stay connected on multiple devices simultaneously
The downsides: you have to pick it up and return it (usually at the airport counter), it's a physical device that can die if you forget to charge it, and you're paying a daily rental fee that adds up.
💡 Tip: If you're on a laptop-heavy trip (remote work, not just travel), a pocket Wi-Fi might still make sense for tethering multiple devices. But for a normal holiday, eSIM wins comfortably.
What about free Wi-Fi in Japan?
Japan has improved its public Wi-Fi situation significantly — most convenience stores (7-Eleven, FamilyMart, Lawson), many cafes, and major train stations offer free Wi-Fi.
That said, relying entirely on free Wi-Fi isn't viable. The connections are often limited to 30-minute sessions, you have to register repeatedly, and you'll be offline on trains and walking around — which is exactly when you need navigation.
Think of free Wi-Fi as a bonus, not a strategy.
Will your phone work in Japan?
Japan uses 4G LTE and is rolling out 5G in major cities. Most modern smartphones from Europe, North America, and Australia are compatible. A few things to check:
- Your phone is unlocked (not carrier-locked to your home country). If you bought it outright or have finished a contract, it's almost certainly unlocked.
- It supports the frequency bands used in Japan (Band 1, 3, 19 are the key ones for NTT Docomo's network). A quick Google of your phone model + "Japan compatible" will confirm.
Almost all iPhone models from the 6S onwards, and most recent Android flagships, work fine.
The short version: download Airalo before you leave, buy a Japan eSIM for your trip, and install it while you're still on your home Wi-Fi. Sorted. If you're travelling with people who aren't tech-confident, point them at the airport SIM counter — it's painless. And if you have other questions about setting up your Japan trip — connectivity, itinerary, transport — that's what we're here for.