This video showcases Airalo’s travel eSIM performance in Japan, highlighting speed test results from multiple cities, latency, local network connectivity, and IP address details.
Much better than I expected for a travel eSIM. The Japan eSIM I bought from Airalo wasn't the cheapest, but latency was surprisingly good (below 40ms) even though the IP address was from USA, which probably means they are doing a local breakout. The speeds were good, more than sufficient for travel needs, and the coverage was also satisfactory.
It would have been the perfect option if the price were cheaper.
Great experience. Got the eSIM in a sale. Activated while still at home, immediately got connection after deactivation of air plane mode. Speed was good, coverage OK. One downside: location was sometimes detected as Singapore, which was not always great (Microsoft send me a lot of warnings because it was routed through SingTel Mobile in Singapore).
Very slow even with excellent signal strength (4G, iPhone XS), unusable even for maps and messaging. Very high ping times (600ms+). Support is very slow as well and did not fix the issue nor provide a refund.
Horrible speed across the entirety of Japan, feels lile youre locked in 2G/Edge. Tried multiple reboots, changed speed profile, tried different networks, it all is of an incredible poor quality. Not worth your money. Switched to another leading eSim provider, night and day! I now can finally browse.
This is my second time using Airalo in Japan. It works okay but it seems the carrier switching doesn't work perfectly. When that happens I just have to turn on -> off flight mode which is a bit annoying but not too big of a deal.
It connected to au (KDDI) 4G most of the time, occasionally docomo (NTT).
The speed is decent but it's roaming via Singapore so there is a certain latency for sure.
The screenshot attached is the one I did at Narita airport.
Frequently Asked Questions
Does Airalo offer unlimited data eSIM for Japan?
Airalo does not provide a true unlimited data eSIM for Japan. Every plan that lists “Unlimited” in its name actually limits high‑speed data to 3 GB per day; once that daily quota is reached the speed is reduced to 1000 kbps. This throttling means the plan is not unlimited in the sense of offering uninterrupted high‑speed data without caps.
Travelers who need a fixed amount of data can choose from several high‑cap options. For example, a 100 GB plan is available for 180 days at $89 USD, a 50 GB plan for 30 days at $59 USD, and a 20 GB plan for 15 days at $24 USD. These fixed‑data plans can be more cost‑effective than the daily‑limited “Unlimited” options, especially for users who are not extremely heavy data consumers.
Does Airalo offer Japan eSIM with phone number and SMS?
Airalo does not provide any Japan eSIM plans that include a phone number or SMS capability. All of its eSIMs for Japan are data‑only. However, travelers can still use voice and messaging through VoIP applications such as WhatsApp, Telegram and iMessage, which operate over the data connection.
How many data plans does Airalo offer for Japan?
Airalo lists 17 single‑country plans and 32 multi‑country plans that cover Japan. In addition to those, the catalogue contains 12 daily data‑cap options and 37 fixed‑data‑cap options, giving travelers a wide range of usage limits and validity periods. Across these plans the price falls from roughly $4 to $89 USD and the data caps range from 1 GB up to 100 GB, so whether you need a small pocket‑data package for a short visit or a larger allocation for an extended stay, there are options available.
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Call/SMS![Airalo Travel eSIM in Japan [Real-World Network Quality Test & Review]](https://i.ytimg.com/vi/qbGDO1cfPmM/sddefault.jpg)
