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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.
eSIM Tokyo : guide to staying connected in the capital
TL;DR â Tokyo, capital of 14 million people and 37 million in the wider metropolitan area, is one of the best 4G/5G-covered cities in the world. An eSIM acti...
eSIM Japan in Osaka: Coverage, Subway, and Connected Street Food
TL;DR Osaka has excellent 4G/5G coverage on the NTT Docomo network, including in the subway, the pedestrian streets of Dotonbori, and all the way to Universa...
eSIM Japan in Tokyo: 5G Coverage and Neighborhood-by-Neighborhood Guide
TL;DR Tokyo is one of the best-covered cities in the world for mobile networks. With an eSIM on the NTT Docomo network, you get a stable 4G/5G connection in ...
eSIM Japan in Hiroshima and Miyajima: Connectivity Guide 2026
TL;DR Hiroshima and Miyajima island enjoy excellent 4G/5G coverage via the NTT Docomo network. In the city, at the Peace Memorial Park, on the ferry, and aro...
eSIM Japan in the Japanese Alps: Takayama, Kamikochi, Shirakawa-go
TL;DR The Japanese Alps (Chubu region) combine historic towns with high mountain scenery. Network coverage varies dramatically from one spot to the next: exc...
eSIM Japan in Hokkaido: Network Coverage, Dead Zones, and Road Trips
TL;DR Hokkaido is Japan's second-largest island â and its wildest. Network coverage is excellent in cities (Sapporo, Hakodate, Otaru), good along main roads,...
eSIM Japan in Kyoto: Stay Connected Between Temples and Bamboo Groves
TL;DR Kyoto is one of the best-covered cities in Japan thanks to the NTT Docomo network. Whether you're at Fushimi Inari, in the Arashiyama bamboo grove, or ...
Japan eSIM 5G Coverage: Where It Works in 2026
Japan has achieved 5G population coverage of 98% as of the end of fiscal year 2024. In practice, major cities like Tokyo, Osaka, and Kyoto offer reliable and...
Japan eSIM in Okinawa: Coverage Guide for All Islands (2026)
Yes, an eSIM works in Okinawa. 4G coverage is solid across populated areas of the main island â Naha, Chatan, Onna-son â as well as on Ishigaki and Miyako-ji...
Does eSIM Work on the Shinkansen? Everything You Need to Know
TL;DR Yes, your eSIM works on the Shinkansen. NTT Docomo's network covers the vast majority of Japan's high-speed rail lines, including the routes between To...
Japan eSIM in Rural Areas: Does It Work Outside the Big Cities?
TL;DR Yes â the NTT Docomo network, used by PlanJapan eSIMs, covers 99% of Japan's territory, including the vast majority of rural areas, mountains, and isla...