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Your complete resource for staying connected in Japan. Guides, comparisons, and tips to help you choose the right eSIM and enjoy seamless connectivity throughout your trip.
Best eSIM for First-Time Japan Travelers (2026 Guide)
First trip to Japan and no idea how to stay connected once you land? Between sky-high roaming plans, pocket WiFi rentals to pick up, and the jungle of eSIMs,...
eSIM Japan Not Working at Narita/Haneda? 8 Fixes 2026
You've just landed at Narita or Haneda, you pull out your phone⊠and your Japan eSIM shows no signal. Don't panic: in almost every case, it's not a faulty eS...
eSIM Japan tethering: how it works & real limits
TL;DR: Tethering (hotspot) with a PlanJapan Japan eSIM works exactly like with a physical SIM: your iPhone or Android turns into a 5 GHz Wi-Fi hotspot that c...
Calls and SMS in Japan: eSIM data vs voice plan 2026
TL;DR â With a data-only eSIM in Japan (PlanJapan on the NTT Docomo network), you don't receive traditional cellular calls or SMS, but you keep 100% of your ...
WhatsApp in Japan with a data-only eSIM: does it work?
TL;DR â Yes, WhatsApp works perfectly with a data-only eSIM in Japan. Messages, voice calls, video calls, file sharing: everything runs over the 4G/5G NTT Do...
eSIM Japan validity and expiration: complete 2026 guide
TL;DR: A PlanJapan Japan eSIM has two distinct timelines â the installation window (up to 30 days after purchase to scan the QR code) and the plan duration (...
No signal Japan eSIM: 10 causes and fixes for 2026
TL;DR: "No signal" with your Japan eSIM almost always comes from one of 10 specific causes â and 8 of them resolve in under 3 minutes without contacting supp...
Mobile Internet in Japan in 2026: State of the Network
TL;DR â In 2026, Japan remains the best-connected G7 country: 99.9% of the territory covered in 4G by NTT Docomo, 5G now reaching over 96% of Tokyo's 23 ward...
How to get internet in Japan: 7 solutions compared
TL;DR â To get internet in Japan, you have 7 concrete options: a Japan eSIM (our recommendation, set up in 2 minutes via QR code, from $13 for 5 GB), a Pocke...
What Is an eSIM? Complete Technical Guide for 2026
TL;DR: An eSIM (embedded SIM) is a digital SIM card built into your phone's hardware at the factory. Instead of inserting a tiny piece of plastic, you downlo...
eSIM Japan Refund: Conditions and Procedure (2026 Guide)
TL;DR: A Japan eSIM from PlanJapan is fully refundable if it has never been activated, within 14 days of purchase (under EU consumer-rights law). Once activa...
Japan eSIM Not Working: Complete Troubleshooting Guide (2026)
TL;DR: If your Japan eSIM is not working, the most common causes are: incompatible or carrier-locked phone, eSIM profile installed but not activated, incorre...