PlanJapan
VS
Ubigi
Looking for a review of Ubigi for Japan? Good news: both eSIMs use the same excellent NTT docomo network. So the match is decided on everything else — price per GB, unlimited plans, the buying journey, free extras, support. We checked it all, figures in hand.
The 9 criteria that really matter once you're there, taken from the official websites.
| Feature | PlanJapan Recommended |
Ubigi |
|---|---|---|
| Price per GB | 0,70 € | ≈ 1,85 € |
| Genuinely unlimited, no speed throttling | — | |
| TikTok & banking apps accessible | — | |
| NTT docomo 4G/5G network | ||
| Unlimited hotspot (tethering) | ||
| Japan guide (70+ pages) & 200+ spot map included free | — | |
| Buy without an account, activate in 2 min | — | |
| Support 7 days a week | — | |
| Satisfaction guaranteed | ~ |
Prices and features recorded in July 2026 on each brand's official website, for a comparable Japan plan (≈ 20 GB / 30 days, or 15-day unlimited), converted into euros. Competitors' offers may change.
Based on the 50 GB plan: the shorter the bar, the less you pay per gigabyte.
PlanJapon
0,70 €
Ubigi
≈ 1,85 €
And what about unlimited data? Based on our July 2026 check, Ubigi does not offer a genuinely unlimited plan for Japan, and top-ups are expensive. With PlanJapan, the unlimited plan runs from 10 to 30 days — for example 15 days at €38.99 — with no speed throttling and unlimited tethering included.
Good to know if you're travelling together: −5% from 2 eSIMs and −10% from 3 or more, applied automatically at the cart on the order total — no code to enter.
What we honestly credit Ubigi with — and what gets awkward once you're in Japan.
PlanJaponThe Japan specialistfrom €0.70/GBVerdict — Built for a single destination: yours. That's the whole difference with multi-destination platforms.
UbigiThe NTT subsidiary≈ 1,85 €/GoVerdict — The right network… at a steep price and without the support. Same docomo, in 2 minutes and 2.6× cheaper per GB.
Our take. In Japan, Ubigi and PlanJapan both rely on the same NTT docomo network: in terms of connection quality, you lose nothing by choosing either. So it all comes down to the experience. Ubigi is a generalist telecom platform: an account and the app are mandatory before you can buy, the buying journey is heavy, the interface is dated and support is limited. With PlanJapan, you order like on any other shop and immediately receive a QR code by email to scan — activation in 2 minutes, and 180 days to activate your eSIM after your purchase.
The second gap is real-world use once you're there. Ubigi doesn't offer a genuinely unlimited plan for Japan; with PlanJapan, the unlimited plan (10 to 30 days, from €29.99) comes with no speed throttling and unlimited tethering included. Add the Japan guide + Google Maps map free (€29.98) and support 7 days a week — when the price gap per GB is already 2.6× in our favour (€0.70 versus ≈ €1.85).
The detail that matters when travelling together: with PlanJapan, tethering is included with no limits on every plan — handy for connecting a laptop or a travel companion's phone. How to turn on the hotspot →
Looking for Ubigi reviews for Japan? Here, side by side, are those from travellers who chose PlanJapan — 4.9/5 from 1,500+ verified reviews, collected after a verified purchase.
Ballester FrédéricFrance — verified purchase
✓ Verified
“The SIM worked perfectly. You just need to remember to turn on data roaming before you land in Japan. It runs on the docomo network, one of the best in Japan. I got one for myself and my whole family. Highly recommended.”
Giullia ToscanoFrance — verified purchase
✓ Verified
“Extremely happy with this eSIM, I highly recommend it. I visited several cities and had no network issues, no need for a VPN unlike other eSIMs. Unbeatable price and excellent after-sales service.”
“Very happy. When I arrived in Tokyo, my own mistake meant I couldn't activate my eSIM. I contacted PlanJapan on WhatsApp: quick, efficient reply. Thank you so much. No hesitation in recommending them.”
Ubigi isn't the only alternative: here are our other comparisons, done with the same method — prices from the official websites, identical criteria.
Ubigi is a serious telecom player: the brand is run by Transatel, a company in the NTT group, and relies on the NTT docomo network in Japan. On the other hand, the buying journey is heavy (account + app mandatory), there's no genuinely unlimited plan for Japan, support is limited and the price per GB (≈ €1.85) is 2.6× higher than PlanJapan's (€0.70/GB). See the full comparison →
Both use the excellent NTT docomo network. The difference comes down to experience and price: PlanJapan lets you buy without an account with a QR code by email in 2 minutes, offers genuinely unlimited data with no throttling and unlimited tethering, the Japan guide + Google Maps map free (€29.98), support 7 days a week and a price of €0.70/GB — versus ≈ €1.85/GB with Ubigi, with no free extras and no 7-day support. See the plans →
No — according to our comparison (July 2026, official websites), Ubigi does not offer a genuinely unlimited plan for Japan, and top-ups are expensive. With PlanJapan, the unlimited eSIM runs from 10 to 30 days from €29.99, with no speed throttling and unlimited tethering included.
The NTT docomo 4G/5G network, Japan's number one carrier, with 99% data coverage — from Hokkaidō to Okinawa, shinkansen included. It's the same network Ubigi uses: you lose nothing in connection quality by choosing PlanJapan.
No: buy without an account, without an app. You immediately receive a QR code by email to scan, and activation takes 2 minutes. You then have 180 days to activate your eSIM after your purchase — the 30-day period only starts on activation. Follow the step-by-step guide →
Genuinely unlimited data, €0.70/GB, buy without an account in 2 minutes, guide + map free and support 7 days a week — the Japan eSIM specialist, activated in 2 minutes.
Choose my plan →Satisfaction guaranteed · −5% from 2 eSIMs, −10% from 3
