
nextSIM.eu aggregates eSIM data plans from leading GSM operators, offering instant connectivity in over 200 destinations – at local rates, for both individual users and businesses. Compatible with smartphones, tablets, and smartwatches, eSIM routers, laptops, IoT devices, cars, sensors etc.
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nextSIM does not have a truly unlimited eSIM plan for Japan. All plans listed under the “Unlimited” label provide a fixed amount of high‑speed data, such as 1 GB or 2 GB per day, after which the speed is throttled to either 512 kbps or 2000 kbps.
Travelers who need more than a few gigabytes can choose from the fixed‑data alternatives, such as the 50 GB 30 day plan for $33.56 USD or the Pro 50 GB 30 day package for $40.63 USD. These options offer a larger data allowance at a predictable price each month, which can be more cost‑effective for heavy data users than the limited‑speed “unlimited” plans.
nextSIM does not provide an eSIM plan with a local phone number or SMS capability for Japan.
Only data‑only eSIMs are offered, which allow internet access on 4G or 5G networks.
Travelers can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection to make calls and send messages.
nextSIM offers 74 single‑country plans and 28 multi‑country plans for Japan. The catalogue includes both fixed‑data plans—84 in total—and daily‑cap plans—18 in total—providing variety for travelers who need specific usage limits. Prices range from $2.80 to $1, 295.03, while data caps span 1 GB up to 50 GB, and validity periods extend from 1 day to 365 days.
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