Head-to-head · Japan eSIM Plans
Yesim vs Ubigi
Yesim leads on 0 checks, Ubigi on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreYesim · 8.8/10
Yesim scores higher on our rubric for japan esim plans: 8.8 against 8.6 out of 10; our editors rank them #4 and #6.
Yesim is the better fit for longer trips needing a 30-day starter bundle. Ubigi is the better fit for travelers who value a reusable eSIM across destinations.
- Yesim fits best
Longer trips needing a 30-day starter bundle
- Ubigi fits best
Travelers who value a reusable eSIM across destinations
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Side by side
| Feature | Yesim 8.8/10 Visit ↗ | Ubigi 8.6/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.8 | 8.6 |
| Ranking | #4 in Japan eSIM Plans | #6 in Japan eSIM Plans |
| Best for | Longer trips needing a 30-day starter bundle | Travelers who value a reusable eSIM across destinations |
| Pricing model | Paid | Paid |
| Starting price | Not published | Not published |
| Free plan | — | — |
| Free trial | — | — |
| Deployment | Cloud, Mobile | Cloud, Mobile |
| Platforms | Web, iOS, Android | Web, iOS, Android, Windows |
| Support | Email, Docs · 24/7 | Docs |
| Built for | Solo, Small business | Solo, Small business |
| Features Yesim 1/1 · Ubigi 1/1 | ||
| Hotspot support | ✓ | ✓ |
| Specs | ||
| Data type | Fixed | Fixed |
| Data allowance | 1 GB | 1 GB |
| Validity | 30 days | 30 days |
| Coverage scope | Japan_only | Japan_only |
| Activation timing | First_connection | First_connection |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | Yesim sells prepaid, data-only eSIM plans for travelers in Japan. The 1 GB, 30-day plan is a starter option for a longer trip, while fixed and unlimited data choices let travelers select a different allowance or duration. Plans are… Read the review → |
Ubigi offers prepaid, data-only eSIM plans for travelers in Japan and other destinations. The Japan 1GB plan costs $4 USD as a one-time purchase and includes 1 GB valid for 30 days. It suits travelers who want a reusable eSIM for plans… Read the review → |
Strengths and trade-offs
Yesim — where it wins
- 1 GB plan stays valid for 30 days after first network connection
- Fixed and unlimited data options for Japan
- Hotspot support and in-app data and validity tracking
Where it doesn't
- Japan plans are data-only
- Requires an eSIM-compatible phone or tablet
- Mobile data speed depends on provider and location
Ubigi — where it wins
- Japan 1GB costs $4 once and is valid for 30 days
- Monitor data balance and top up through the app or website
- Share data through smartphone hotspot use
Where it doesn't
- The Japan entry plan includes only 1 GB of fixed data
- Data-only service does not provide traditional calls or SMS
- Requires an unlocked, eSIM-compatible device
- Yesim8.8/10 · Paid
A Japan-only eSIM with fixed and unlimited data options and hotspot support.
Visit YesimFull verdict → - Ubigi8.6/10 · From $4
A $4 Japan plan pairs 1 GB for 30 days with a reusable eSIM and hotspot sharing.
Visit UbigiFull verdict →
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All japan eSIM plans comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update