ESIM.DOG offers a selection of unlimited data eSIM plans for Japan that use the 5G network. Each plan has a validity period ranging from 1 day up to 30 days and is priced between $1.48 USD and $39.98 USD. The data allowance for these plans is marked as Unlimited, and the features list indicates that speeds may be throttled with a maximum speed of 1000 kbps.
Because the plans are subject to a fair‑usage policy, data speeds can be reduced after heavy use. Travelers who are concerned about potential speed restrictions should contact ESIM.DOG directly to confirm the typical amount of data that can be used at full speed before throttling applies.