Compare
eSIMs for Japan
Compare eSIMs for Japan: a fixed allowance for your trip or unlimited data for heavy use.
Prices checked: Published by HolySim
What should you consider in Japan?
For Japan, larger data allowances and network partners are key differences. If you watch a lot of video or connect a laptop, check the hotspot terms too: unlimited phone data does not always mean unlimited sharing.
HolySim vs Airalo
For Japan, HolySim costs less than Airalo for 5, 10 and 20 GB over 30 days. At 5 GB, the saving is only one cent. HolySim also has a fixed 50 GB plan, which was absent from Airalo’s local fixed range when checked.
HolySim vs Holafly
For Japan, HolySim is the cheaper choice if a fixed allowance of up to 50 GB is enough. Holafly offers unlimited data on your phone for the number of days you travel. Holafly applies a separate limit to sharing with other devices.
HolySim vs Saily
For Japan, 5 GB costs the same with HolySim and Saily. HolySim is cheaper at 10 and 20 GB, and only HolySim offers a fixed 50 GB plan in the local ranges checked. Saily offers automatic top-ups and in-app chat.
HolySim vs Nomad
For Japan, Nomad is cheaper than HolySim at all four fixed allowances on the date checked. The 10 and 20 GB prices are promotions. The checked Nomad 20 GB plan uses KDDI au on 4G; HolySim lists several networks with 5G access.
HolySim sells eSIMs and publishes this comparison. Each detail page names the product pages consulted and the date checked. Network details come from the provider; they are not our own reception tests.