AirSIM
AirSIM: Flexible Japan data options, with reduced speeds after each Day Pass allowance. Ranked #23 of 60 in Japan eSIM Plans by our editors (6.4/10); pricing: Paid; best for travelers needing Japan-region app access or day passes.
At a glance
- Editor score6.4 / 10
- PricingPaid
- Best forTravelers needing Japan-region app access or day passes
- Free planNo
- Data typeFixed
- Facts checked3 Oct 2026
Where it wins
- Choose a daily high-speed allowance, then continue on reduced-speed unlimited data
- Hotspot and tethering are supported
- Japan Direct IP option supports access to some region-locked apps
Where it doesn't
- Data-only service; standard calls and SMS are not included
- Day Pass high-speed data is limited to the selected daily allowance
- Available on iOS and Android, with email support
Our verdict on AirSIM
AirSIM sells Japan travel eSIMs for travelers who need mobile data, including people seeking access to some Japan region-locked apps. Its plans come in two formats: fixed-data packages with different allowances and validity periods, and daily passes with a selectable high-speed allowance. The service is data-only, so it does not include standard calls or SMS. Plans work on iOS and Android, and the eSIM can be installed before travel and activated on arrival.
The Day Pass is the more distinctive option for travelers who want data each day without a fixed total allowance. It offers 500 MB, 1 GB, or 2 GB of high-speed data per day, then unlimited data at reduced speeds after that day's allowance is used. Durations from 1–30 days are selectable, and hotspot or tethering is supported. According to AirSIM's published plan information, Japan service uses partner mobile networks including NTT Docomo. The Japan Direct IP option may suit travelers who need Japan-region access for some apps; it is separate from the general data allowance decision.
The published starting price is $4 AUD, but the Day Pass price may vary with the chosen allowance and duration. The fixed-data Japan 1GB 7Days (Regular) offer is another choice for travelers who prefer a defined allowance and validity period. Pick AirSIM if hotspot support, day-by-day high-speed choices, or a Japan Direct IP option matter to your trip. Look elsewhere if you need calls or SMS, or if your priority is a predictable high-speed allowance for the full trip: Day Pass high-speed data is capped per day, with reduced speeds afterward.
AirSIM pricing
All 2 AirSIM plans and prices →
AirSIM fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Data type | Fixed |
| Data allowance | 500 MB, 1 GB, or 2 GB high-speed per day, then unlimited at reduced speeds (Day Pass) |
| Validity | 1 days |
| Hotspot support | Yes |
| Coverage scope | Japan_only |
| Activation timing | First_connection |
| Deployment | Mobile |
| Platforms | iOS, Android |
| Support | |
| Built for | Solo (editorial estimate) |
| Pricing | Paid (source) |
| Website | airsims.com.au |
| Facts checked | 3 Oct 2026 |
Alternatives to AirSIM
- AiraloA broad Japan eSIM lineup with app tracking, low-data alerts, and eligible top-ups.9.3
- Orange TravelA flexible prepaid choice, from a €1 1 GB bundle to larger and unlimited plans.9.1
- Vodafone Travel eSIMJapan data plans range from fixed bundles to unlimited and shared options.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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