Head-to-head · Japan eSIM Plans
Airalo vs IIJ Japan Travel SIM/Digital
Airalo leads on 0 checks, IIJ Japan Travel SIM/Digital on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreAiralo · 9.3/10
Airalo scores higher on our rubric for japan esim plans: 9.3 against 8.4 out of 10; our editors rank them #1 and #7.
Airalo is the better fit for travelers comparing fixed and unlimited Japan data. IIJ Japan Travel SIM/Digital is the better fit for travelers wanting large data bundles on Docomo LTE.
- Airalo fits best
Travelers comparing fixed and unlimited Japan data
- IIJ Japan Travel SIM/Digital fits best
Travelers wanting large data bundles on Docomo LTE
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Side by side
| Feature | Airalo 9.3/10 Visit ↗ | IIJ Japan Travel SIM/Digital 8.4/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 9.3 | 8.4 |
| Ranking | #1 in Japan eSIM Plans | #7 in Japan eSIM Plans |
| Best for | Travelers comparing fixed and unlimited Japan data | Travelers wanting large data bundles on Docomo LTE |
| Pricing model | Paid | Paid |
| Starting price | Not published | Not published |
| Free plan | — | — |
| Free trial | — | — |
| Deployment | Cloud, Mobile | Mobile |
| Platforms | Web, iOS, Android | iOS, Android |
| Support | Live chat, Docs · 24/7 | Live chat, Phone · 24/7 |
| Built for | Solo | Solo, Small business |
| Features Airalo 1/1 · IIJ Japan Travel SIM/Digital 1/1 | ||
| Hotspot support | ✓ | ✓ |
| Specs | ||
| Data type | Fixed | Fixed |
| Data allowance | 1 GB | 3 GB |
| Validity | Not published | 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 | Airalo sells prepaid eSIM data packages for travelers, including Japan-only plans with fixed allowances or unlimited data. The range suits people who want to compare data amounts and validity periods, from a 1 GB option through a 20 GB… Read the review → |
IIJ Japan Travel SIM/Digital is a prepaid, data-only eSIM for visitors to Japan and temporary returnees who want a fixed data allowance rather than voice or SMS service. Its seven 30-day options range from 3 GB to 55 GB and use Japan-wide… Read the review → |
Strengths and trade-offs
Airalo — where it wins
- Choose from six fixed-data allowances and a 10-day unlimited plan
- Track data use and get low-data notifications in the app
- Install before arrival; eligible eSIMs can be topped up
Where it doesn't
- No free plan is available
- Hotspot use depends on device and network support
- Activation policy and validity vary by package
IIJ Japan Travel SIM/Digital — where it wins
- Seven fixed-data options from 3 GB to 55 GB, each valid for 30 days
- Japan-wide NTT DOCOMO 4G LTE coverage
- Data can be recharged during the usage period
Where it doesn't
- Data-only service; no voice or SMS
- eSIM installation requires online registration after purchase
- Mobile support is limited to iOS and Android
- Airalo9.3/10 · Paid
A broad Japan eSIM lineup with app tracking, low-data alerts, and eligible top-ups.
Visit AiraloFull verdict → - IIJ Japan Travel SIM/Digital8.4/10 · Paid
A data-only Japan eSIM with 3–55 GB bundles and 30-day validity.
Visit IIJFull verdict →
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- Orange Travel vs IIJ Japan Travel SIM/Digital
- Vodafone Travel eSIM vs IIJ Japan Travel SIM/Digital
All japan eSIM plans comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update