Ubigi is the travel eSIM with arguably the strongest telecom pedigree. It is a brand of Transatel, a Paris-based connectivity company now owned by Japanese telecom giant NTT — the same infrastructure that powers in-car connectivity for brands like BMW, Audi and Mercedes-Benz. That enterprise background is exactly what sets Ubigi apart.
With coverage across 190+ destinations and a strong Trustpilot rating, Ubigi positions itself as a premium-quality, not budget, option. Here is our honest assessment, based on published plans and buyer feedback, of where it shines and where it falls short.
Network Quality — The Main Draw
Because Transatel negotiates carrier agreements directly rather than reselling through intermediaries, Ubigi tends to connect you to premium tier-1 networks — often the same ones locals use on their best plans. Independent testers regularly rate its network performance among the very best, with city speeds commonly in the 40-80 Mbps range and reliably low latency for video calls.
Japan is its flagship market: through the NTT Docomo network, Ubigi delivers coverage that reaches deep into rural areas, subway systems and mountainous regions where providers on secondary networks often drop signal. Coverage across Europe and the rest of Asia is similarly strong.
Coverage, Plans & Devices
Ubigi offers local, regional and global plans across 190+ destinations, and uses a single-profile approach — you install the eSIM once and activate different plans on it as you travel, including across borders. Some plans are rechargeable and offer larger allowances or longer validity than typical travel eSIMs.
Device support is unusually broad: beyond iPhones and Android phones, Ubigi works on Windows laptops and IoT hardware, a real advantage for business travellers who want a single data solution across devices.
Pricing
Ubigi sits in the mid-range on price — not the cheapest, but reasonable given the network quality you get. Entry-level small bundles can be undercut by budget marketplaces, but for premium reliability in key markets it is competitive, and especially good value in Japan and across Asia. As with all eSIMs, prices change often, so check current rates before buying.
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Drawbacks
- The app and website feel more dated and utilitarian than some flashier rivals.
- Data-only on standard plans, with no local number.
- Customer support is not its strongest area by most accounts.
- Best value tends to be in specific regions — notably Japan and Asia — rather than universally.
Who It's For
Ubigi is the pick for travellers who prioritise network quality and reliability over rock-bottom price — business travellers, anyone heading to Japan or elsewhere in Asia, and those who need data on a laptop as well as a phone. Budget-focused travellers on simple single-country trips may find better entry-level prices elsewhere.
Frequently Asked Questions
Ubigi is a solid option for travelers who want data abroad without swapping physical SIMs or paying roaming fees. As with any eSIM, the right choice depends on your destination, how much data you need, and whether you want unlimited data or pay-per-GB plans. Always check that your phone is eSIM-compatible and unlocked first.
About the author
SK Kutubuddin · Founder & Editor
The founder and editor of Travel and Time. An aeronautical engineer with close to two decades in aviation, I build the site’s flight, distance, and trip-planning tools myself and check every figure before it goes live. I write from Kolkata, India.
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