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. The provider offers fixed‑data options instead, such as a 60GB plan valid for 30 days that costs $49.00 USD, another 60GB plan for $66.00 USD, and a 60GB “BEST ASIA” plan for $78.00 USD that also covers other Asian countries. Choosing a fixed data plan can be more cost‑effective unless you are an extremely heavy data consumer.
Does Ubigi offer Japan eSIM with phone number and SMS?
Ubigi does not provide a Japan eSIM with a phone number or SMS capability. The available plans are data‑only, so travelers cannot receive or send text messages or make calls through a traditional phone number. However, popular VoIP applications such as WhatsApp, Telegram, and iMessage can be used over the data connection for voice calls and messaging.
How many data plans does Ubigi offer for Japan?
Ubigi offers 16 single‑country plans for Japan and 27 multi‑country plans that include Japan. The single‑country options are based on fixed data amounts, from 500 MB to 60 GB, with prices ranging from $2.00 to $240.00. The multi‑country plans provide broader itineraries that bundle coverage in several countries, offering similar data caps and price ranges.
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![Ubigi eSIM in Japan [Hands-on Network Performance & Review]](https://i.ytimg.com/vi/LcQiIKe4qlU/sddefault.jpg)
