Ubigi offers eSIM services for travelers, digital nomads and remote-working professionals, providing high-end global cellular connectivity in over 190+ destinations with a large range of affordable prepaid data plans.
Ubigi offers eSIM services for travelers, digital nomads and remote-working professionals, providing high-end global cellular connectivity in over 190+ destinations with a large range of affordable prepaid data plans.
This video presents real-world tests of the Ubigi travel eSIM at key locations in Japan, including major airports and Kyoto. It covers mobile data speeds, network latency, the local operator it connects to, and IP address details, giving you a clear picture of how Ubigi performs in actual usage scenarios.
I tested Ubigi (5G) and TravelKon (Docomo IIJ) (LTE only).
Both have Japan IP address.
But TravelKon is faster ping (45ms) instead of Ubigi (120ms) even on 5G.
TravelKon (Docomo IIJ) is recommended.
Was very happy with service. 5G phone connected at 5G. One of the few options in Japan that will do that. Most roaming services won't and a lot of other prepaid providers won't.
Service was 4G rather than 5G but speeds were perfectly fine, even for real-time navigation. The few low numbers recorded in speed tests were almost all at Narita Airport.
10 GB each turned out to be plenty for 9 days in Tokyo. We did connect our phones to the hotel's WiFi but probably didn't need to.
Works great! Good coverage (docomo network it seems), Japanese IP, and good ping times to Europe. Used with an iPhone XS on LTE. Attached Speedtest is from a train
Very poor experience. My data would be spotty at best, even with full bars. Certain websites would not load, sometimes Facebook and Instagram would not load. My email would only sometimes work. WhatsApp would seldomly send.
Good & solid experience! Balance, refill & plans via the website! Good 4G data speeds in japan (15-20mbps)!
Frequently Asked Questions
Does Ubigi offer unlimited data eSIM for Japan?
Ubigi does not provide an unlimited data eSIM plan for Japan. Instead, Ubigi offers fixed data plans, the largest of which are 60GB for 30 days. For example, a 60GB plan in Japan can be purchased for $49.00 USD or $65.00 USD, depending on the package selected. These fixed plans are typically more economical unless a user requires an exceptionally high data usage that would exceed the 60GB allowance.
Does Ubigi offer Japan eSIM with phone number and SMS?
Ubigi does not provide a Japan eSIM that includes a phone number or SMS capability. The plans they offer for Japan are data‑only, allowing high‑speed internet access but not traditional voice or text services. Travelers can use popular VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection for calls and messaging.
How many data plans does Ubigi offer for Japan?
Ubigi offers 16 single‑country plans and 38 multi‑country plans that include Japan. The plans span a price range from $2.00 to $210.00 and a data cap range from 500 MB to 60 GB. Some plans provide a fixed amount of data, while others feature a daily data cap.
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∞ at 1Mbps![Ubigi eSIM in Japan [Hands-on Network Performance & Review]](https://i.ytimg.com/vi/LcQiIKe4qlU/sddefault.jpg)
