eSIM for Japan

Japan eSIM coverage map by network

Every Japan eSIM runs on NTT Docomo, KDDI au, SoftBank or Rakuten Mobile. This map shows where each one has 4G and 5G, built from the service-area maps all four networks publish, so you can pick the network before you pick the plan. Maps as of .

Place by place

4G coverage by network at 129 places, from each network's own map. Maps as of 14 Nov 2026.

  • All over Japan

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileFair

Elsewhere in Japan

  • Tokyo

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Osaka and Kyoto

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Mt Fuji and Hakone

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Japanese AlpsHakuba, Kamikochi, Takayama

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileWeak

  • HokkaidoSapporo, Niseko

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Okinawa

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Hiroshima and Miyajima

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Kyushu

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileStrong

  • Shikoku

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileFair

  • Rural and mountain areasOnsen towns, trails, national parks

    NTT DocomoStrongKDDI (au)StrongSoftBankStrongRakuten MobileFair

Which network for your trip

Cities only: any network, so pick on price. Japanese Alps, Shikoku and the countryside: Docomo, au or SoftBank, level with each other on our map. Fastest downloads: SoftBank, at 73.78 Mbps for its own customers in Ookla's H1 2026 report. A plan on two or more networks takes the best of them at each place, and the map shows that combined coverage on every plan page.

Coverage questions

Which network has the best coverage in Japan?

au, with good 4G at all 129 places we check. Docomo and SoftBank follow at 128 each, and Rakuten Mobile at 114.

Does Rakuten Mobile work in the countryside?

In part. Rakuten Mobile's own network reaches 21 of the 28 rural and mountain places we check and 7 of the 11 in the Japanese Alps. Every travel eSIM we list on Rakuten Mobile also runs on Docomo, au or SoftBank, with good 4G at 27 or 28 of the 28.

Which network has the most 5G in Japan?

Docomo. Ookla's H1 2026 report gave Docomo's own customers 51.4% 5G availability, ahead of au at 48.8%, SoftBank at 41.4% and Rakuten Mobile at 37.4%.

NTT Docomo

Good 4G at 128 of the 129 places on our coverage map, including all 28 rural and mountain places; the one place below that is in Shikoku. Ookla's H1 2026 report gave Docomo's own customers 51.4% 5G availability, the highest of the four. 30 providers sell Japan eSIMs on Docomo.

30 providers on NTT Docomo, cheapest week first

Show all 30 providers

KDDI au

The only network with good 4G at all 129 places on our map, from Shinjuku to the Shiretoko Five Lakes. Ookla measured au's own customers at 67.85 Mbps median download in H1 2026, with 48.8% 5G availability. 37 providers use au, more than any other network.

37 providers on KDDI (au), cheapest week first

Show all 37 providers

SoftBank

Good 4G at 128 of the 129 places on our map, all 11 in the Japanese Alps and 27 of the 28 rural and mountain places. Ookla measured SoftBank's own customers at 73.78 Mbps median download and 45 ms latency in H1 2026, the fastest of the four, and at 153.55 Mbps on 5G. 27 providers sell Japan eSIMs on SoftBank.

27 providers on SoftBank, cheapest week first

Show all 27 providers

Rakuten Mobile

Strong in 7 of the 10 areas on our map: Tokyo, Osaka and Kyoto, Mt Fuji and Hakone, Hokkaido, Okinawa, Hiroshima and Miyajima, and Kyushu. Its own network reaches 7 of the 11 places we check in the Japanese Alps, 12 of 14 in Shikoku and 21 of the 28 rural and mountain places. 11 providers use Rakuten Mobile, and all 154 of their plans on it also run on Docomo, au or SoftBank.

11 providers on Rakuten Mobile, cheapest week first

Show all 11 providers

Coverage areas from the service area maps published by NTT docomo, KDDI au, SoftBank and Rakuten Mobile. Changes: maps and cell positions converted to hexagons by network.

Source: NTT docomo service area map; KDDI au service area map; Rakuten Mobile service area map; SoftBank service area map; nPerf coverage map; OpenCelliD via Source Cooperative, CC BY-SA 4.0.

Basemap: OpenFreeMap © OpenMapTiles. Data © OpenStreetMap contributors.