
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 provide a genuinely unlimited high‑speed data eSIM for Japan. The plans labelled “Unlimited” give a fixed amount of high‑speed data each day, such as 1GB or 2GB per day, and after the limit the speed drops to 512 kbps or 2 Mbps.
If you need a larger, uninterrupted data allowance, nextSIM offers fixed‑data plans like the eSIM Japan 50GB 30Days Economy and the eSIM Pro Japan 50GB 30Days Mobile Data + SMS Number, which give 50 GB of high‑speed data for a month and can be more cost‑effective for heavy users.
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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