eSIM for Japan

CDJapan eSIM

Not enough reviewsJapan specialist9 plans from $17.53

9 plans on Docomo. 5 GB for a week from US$20.04. Prices checked .

Is CDJapan good for Japan?

CDJapan runs on Docomo, strong in all 10 areas on our coverage map, with good 4G at all 28 rural and mountain places. A week with 5 GB costs US$20.04, the 49th cheapest of the 60 providers with a week plan. 5G on every plan. Hotspot allowed. 4 unlimited plans, 4 of them with 3 GB a day at full speed. How we rank CDJapan.

Japan plans

Shown in USD, converted from JPY at ECB rates of

DataPriceCompare
30 GB
8 days
30 GB at full speed, then 200 kbps for the rest of the plan
$20.04
50 GB
16 days
50 GB at full speed, then 200 kbps for the rest of the plan
$24.42
50 GB
31 days
50 GB at full speed, then 200 kbps for the rest of the plan
$30.68
100 GB
31 days
100 GB at full speed, then 200 kbps for the rest of the plan
$49.47
135 GB
91 days
135 GB at full speed, then 200 kbps for the rest of the plan
$67.63
Unlimited: 3 GB a day at full speed, then 200 kbps
Unlimited
5 days
$17.53
Unlimited
10 days
$31.31
Unlimited
15 days
$39.45
Unlimited
31 days
$49.47

CDJapan speed and data rules

CDJapan data rules by plan type
Data at full speedWhen it runs outPlans
30 to 135 GBSlows to 200 kbps for the rest of the planMessages and maps only5 plans
3 GB a daySlows to 200 kbpsMessages and maps only4 plans

CDJapan: “exceeds 3 GB in one day, the speed will be limited” Source

CDJapan reviews and speed tests

No customer reviews or published speed tests of CDJapan in Japan yet.

How fast this network is for their own customers

Ookla's median speeds for people on each network's own plans, H1 2026 unless marked.

  • NTT Docomo
    Download
    50.5 MbpsQ3 2025
    Time on 5G
    51.4%
Ookla speeds for each network's own customers
NetworkDownload5G downloadTime on 5GLatency
NTT Docomo50.5 MbpsQ3 2025Not published51.4%Not published

Sources: Ookla Speedtest Connectivity Report H1 2026 via TelecomLead, 17 Sept 2026; Ookla Speedtest Intelligence Q3 2025 via TelecomsTechNews, 15 Dec 2025.