Internet & SIM(13 guides)

eSIM for Japan: Setup Guide and Common Pitfalls

Check phone support and carrier lock, install a Japan travel eSIM without starting it too early, and set the correct data and roaming lines after landing.

Updated: 2026-09-10

Visit Japan Web at the Airport: QR Codes, Kiosks, and Backup Plans

What to prepare in Visit Japan Web, what each traveller must show, and what to do if the QR code or connection fails at a Japanese airport.

Updated: 2026-09-09

Will My Charger Work in Japan? Plugs and Voltage

Whether you need a plug adapter or voltage converter for Japan: the Type A outlet, 100V power, and how to read your device's voltage rating.

Updated: 2026-09-08

Roaming vs eSIM for Japan: Which Is Cheaper?

Whether to turn on international roaming or buy an eSIM for your Japan trip, compared by trip length and data use, with a decision flow.

Updated: 2026-08-31

eSIM Data Ran Out in Japan: What to Do Right Now

Out of eSIM data in Japan? How to add more data fast, buy a new plan, use free Wi-Fi as a stopgap, and pick the right data size next time.

Updated: 2026-08-15

When a Japanese Form Wants a Phone Number You Don't Have

What to enter when a Japanese booking or signup form requires a local phone number, and why a data-only eSIM cannot receive verification texts.

Updated: 2026-08-11

Google Maps in Japan: Transit Quirks to Know

Why Google Maps confuses tourists in Japan: reading transit routes, station exit numbers, transfer walks, and the gate traps that cost you time.

Updated: 2026-08-02

Do You Need a VPN in Japan? Public Wi-Fi, Work, and Streaming

Japan does not require tourists to use a VPN. See when one helps on public Wi-Fi, when work access requires it, and why streaming may still fail.

Updated: 2026-07-17

Phone Overheating in Japan: What to Do

Is your phone overheating in Japan? Stop charging, cool it safely, and use this decision flow for navigation, video, direct sun, and a parked car.

Updated: 2026-07-11

eSIM Not Working in Japan: Diagnostic Checklist

A step-by-step checklist to fix a Japan eSIM that will not connect: roaming, data line, APN, and network selection.

Updated: 2026-06-13

Free WiFi in Japan: Where It Actually Works

Where to find free WiFi in Japan as a tourist: convenience stores, stations, cafes, and city networks, plus the limits and how to connect safely.

Updated: 2026-06-13

Translation Apps for Japan (Including Offline Use)

The best way to translate Japanese on your trip — camera, voice, and offline translation — and how to download languages before you go.

Updated: 2026-06-13

Pocket WiFi vs eSIM for Japan: Which Fits Your Trip?

Pocket WiFi or eSIM for your Japan trip? Compare cost, number of devices, battery, and setup so you can pick the right data option.

Updated: 2026-06-13