DESTINATION COMPARISON · OFFICIAL SOURCES
eSIM plans for Japan
Compare seven representative plans using provider-published information. Check dates are shown for every row; the most recent is 2026-09-03. Native currencies are preserved and never converted or ranked across currencies.
5 of 7plans meet the five-field recommendation gatePrice · data · validity · official URL · checked dateFilter Japan plans for my trip →
01 / VERIFIED COMPARISON
Representative plan table
Unconfirmed fields are not inferred. Price/GB is calculated only in the plan’s displayed currency and is not used to compare different currencies. Unlimited plans do not receive a per-GB value.
| Provider / plan | Data | Validity | Regular price | Price/GB | Regular calls / SMS | Tethering | 5G | Network | FUP / limit | Price checked |
|---|---|---|---|---|---|---|---|---|---|---|
| AiraloAsialink 10GBLargest verified data allowanceLong-stay optionTethering confirmedOfficial source ↗ | 10 GB | 30 days | USD 25.00 | USD 2.50/GB | Data onlyThe selected representative package appears in Airalo's Data or Unlimited-data listing. Calls/text products are separate.Communication evidence ↗Checked 2026-09-04 | Yes, subject to device/network support | Unconfirmed | Unconfirmed | Fixed allowance; service ends or top-up required when exhausted | 2026-09-03 |
| HolaflyUnlimited 7 daysNot recommendation-eligibleOfficial source ↗ | Unlimited | 7 days | USD 27.50 | — | Data onlyRegular calls and SMS are not included with the destination eSIM.Communication evidence ↗Checked 2026-09-04 | 1GB/day sharing limit shown on examined destination pages | 5G/4G where available | KDDI / SoftBank | Unconfirmed | 2026-09-03 |
| Saily5GB / 30 daysLong-stay optionTethering confirmedOfficial source ↗Check Saily price & availability ↗ | 5 GB | 30 days | EUR 9.99 | EUR 2.00/GB | Data only; phone add-on separateThe optional US phone number is an add-on, not included in this representative data plan.Communication evidence ↗Checked 2026-09-04 | Yes; official destination pages state no hotspot restriction | Yes where local provider/device supports it | KDDI / SoftBank | Fixed allowance; unlimited tiers commonly state 5GB/day then up to 1Mbps, but not applicable to selected fixed plan | 2026-09-03 |
| UbigiJapan 10GBLargest verified data allowanceLong-stay optionTethering confirmedOfficial source ↗ | 10 GB | 30 days | USD 16.50 | USD 1.65/GB | Data onlyRegular calls and SMS are not included.Communication evidence ↗Checked 2026-09-04 | Yes; data sharing allowed | 5G shown for the Japan plan | KDDI; NTT Docomo | Fixed allowance | 2026-09-03 |
| NomadJapan 10GBLargest verified data allowanceLong-stay optionTethering confirmedOfficial source ↗ | 10 GB | 30 days | USD 18.00Dynamic discount observed: USD 16.00 — excluded | USD 1.80/GB | Data onlyRegular calls and SMS are not included with the selected representative plan.Communication evidence ↗Checked 2026-09-04 | Yes | 4G/5G depending on plan/location | KDDI au / SoftBank | Fixed allowance; 512kbps rule applies to daily/unlimited plans, not selected fixed plan | 2026-09-03 |
| aloSIM10GB / 30 daysLargest verified data allowanceLong-stay optionTethering confirmedOfficial source ↗ | 10 GB | 30 days | USD 18.00 | USD 1.80/GB | Data only; Hushed app separateThe aloSIM profile is data-only; any Hushed number is a separate app-based service.Communication evidence ↗Checked 2026-09-04 | Yes; mobile hotspot supported | LTE/5G | KDDI Corporation | Unconfirmed | 2026-09-03 |
| GigSkyCurrent plan details unconfirmedNot recommendation-eligibleOfficial source ↗ | Unconfirmed | Unconfirmed | Unconfirmed | — | Data onlyRegular calls and SMS are not included.Communication evidence ↗Checked 2026-09-04 | Unlimited hotspot sharing stated | 5G/4G/LTE depending on area | Unconfirmed | Fixed and unlimited plans advertised; selected tier and FUP unavailable on the public page | 2026-09-03 |
02 / HOW TO READ THIS
Choose with the limits visible.
- Prices in JPY, USD and EUR are displayed side by side without conversion or cross-currency ranking.
- “Unlimited” does not mean unthrottled; an unconfirmed FUP excludes that plan from allowance-based recommendations.
- 5G and network wording remains qualified where destination evidence is incomplete.
- Dynamic discounts, coupons and credits are separate from the regular price and never drive the matcher.
- “Data only” refers to regular carrier calls and SMS on the selected plan; internet calling apps and separately purchased add-ons are different services.