
iRoamly could be the most versatile travel eSIM brand, supporting fast and stable internet in over 140 countries. It offers a wide range of package options including Daily, Total, Unlimited, as well as packages with calls and SMS.
Data plans for this provider are automatically updated. While we strive to keep the information accurate, we cannot guarantee its completeness or accuracy. Please confirm all details on the provider's official website or app before purchasing.
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“The internet worked perfectly everywhere – airports , even on road trips. No annoying "loading..." screens! Plus their customer chat is LEGIT. Messaged them at 1AM (jetlag lol) and replied in 2 minutes. She literally stayed on chat while I set it up, double-checked everything. Way cheaper than my phone plan back home. Never going back to regular SIM cards!”
“I used their unlimited 3-day plan and could use more than 20GB of data, so it seems to be indeed unlimited. However, the speed was capped at 10 Mbps the whole time.
Traffic was routed through Hong Kong, so the latency was not great but not too bad.
The issue with a Hong Kong IP is that I couldn't access some services like ChatGPT.”
Yes, iRoamly offers unlimited data eSIM plans for Japan. Plans are available for 1 day, 3 days, 5 days, 7 days, 10 days, 15 days, 20 days, and 30 days, with prices ranging from $2.80 to $75.00 USD. All unlimited plans are 5G and provide tethering, but the maximum speed listed for each plan is 20000kbps and the provider may throttle speed after heavy usage under a Fair Usage Policy.
If you are concerned about potential speed restrictions you should contact iRoamly to confirm how the Fair Usage Policy is applied and what typical data volume is available at normal speed for each validity period.
iRoamly does not provide a Japan eSIM that includes a phone number SMS service. The provider offers only data‑only plans for Japan, so travelers cannot make or receive regular phone calls or text messages. However, call and messaging apps that operate over the internet, such as WhatsApp, Telegram, and iMessage, work over the data connection and can be used for voice, video, and text communication.
iRoamly provides 14 single‑country data plans focused on Japan and 5 multi‑country plans that include Japan in their coverage. The single‑country options vary from a modest 500 MB at about $15 up to an unlimited data package for around $120, while the multi‑country bundles range from roughly $25 for a 10‑day period to $200 for a full‑year validity that lets you roam across several countries, including Japan. The single‑country plans come in both fixed‑data‑cap formats—where the amount of data is specified upfront—and daily‑data‑cap formats that allow you to purchase data on a per‑day basis, giving travellers flexibility depending on intended usage.
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