Roamify allows users to save over 80% on roaming charges, in 150+ countries worldwide, all done in under 3 minutes via the power of Roamify eSIMs! We offer both regular and unlimited plans.

Roamify allows users to save over 80% on roaming charges, in 150+ countries worldwide, all done in under 3 minutes via the power of Roamify eSIMs! We offer both regular and unlimited plans.
Roamify allows users to save over 80% on roaming charges, in 150+ countries worldwide, all done in under 3 minutes via the power of Roamify eSIMs! We offer both regular and unlimited plans.
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![Roamify eSIM in Osaka, Japan [Network Quality Test & Review]](https://i.ytimg.com/vi/rHy74C42-38/sddefault.jpg)
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The first time I used an international eSIM from this website with this company, I had no problems at all. I generally got 5G, and I was even in small towns in Japan—I honestly didn’t expect it to work that well.
I highly recommend it. To avoid any issues, and since it was 20GB, I disabled several apps so they wouldn’t use data in the background. By the way, I was also sharing it with my wife.
Everything was perfect.
Used without issues in both Tokyo and Osaka. The latency wasn't great due to roaming connection through Singapore, but was manageable. At least it’s more convenient than eSIMs that go through Hong Kong and don’t work with services like ChatGPT. The network was au’s LTE or 5G, and signal was solid everywhere, no complaints.
coverage was very good, easy setup at public wifi spot upon arrival. One major thing though: internet breakout is Hong Kong.
There is no instagram coverage (anymore) in Hong Kong!
If you plan to use this operator, you should be aware of this.
Had some trouble setting this up at first. The eSIM supports many of the major networks in japan (KDDI, NTT Docomo, SoftBank) and I had to manually force it to connect to Docomo before it would work.
On android: Settings -> Connections -> Mobile Networks -> Network Operators -> disable "select automatically"
After that, it worked flawlessly.
Used the 20GB, then the unlimited plan 5 day plan when I ran out. Both worked great.
Roamify offers a range of unlimited data eSIM plans for Japan. The plans provide 5G connectivity and are valid for anywhere from 1 day up to 30 days, with prices starting at $3.00 USD for a 1‑day plan and going up to $79.90 USD for a 30‑day plan. Each plan allows tethering and may be subject to speed throttling after a certain amount of usage, as part of a fair‑usage policy.
If you are concerned about how the fair‑usage policy might affect your speed or how much data remains available at normal speed once throttling begins, contact Roamify directly to confirm the typical threshold and data limits before purchasing.
Yes, Roamify sells several eSIM plans that include a phone number and SMS for Japan. The plans range in price from $15.00 USD to $105.00 USD and in validity from 7 days to 365 days, with data caps between 1GB and 20GB. Most of the plans provide a phone number with the dialing code +1, which is not a local Japanese number but rather a United States number; only the Asia Sprint plan carries a +33 dialing code. All plans allow inbound and outbound voice calls and inbound and outbound SMS, so calls and text messages can be sent and received while in Japan. Because the phone number is not local, users should confirm the exact capabilities with Roamify when they need a specific type of number or SMS service.
For Japan Roamify offers 37 single‑country plans and 87 multi‑country plans. The available plans span a price range of $3 to $160, with data caps from 1 GB to unlimited, and validity periods between 1 and 365 days. Some plans feature a fixed data amount while others are based on a daily data cap; all selected plans allow tethering, though speeds may be throttled.
Summarized by Gen AI. Last updated: