aloSIM
aloSIM: A flexible Japan eSIM with fixed or unlimited data and a Hushed phone number. Ranked #15 of 60 in Japan eSIM Plans by our editors (7.3/10); pricing: From $3.50; best for short trips needing Japan data and a phone number.
At a glance
- Editor score7.3 / 10
- PricingFrom $3.50
- Best forShort trips needing Japan data and a phone number
- Free planNo
- Data typeFixed
- Facts checked3 Oct 2026
Where it wins
- Choose trip durations from one to 30 days and fixed or unlimited data
- KDDI LTE/5G coverage with automatic local connection on arrival
- Includes a Hushed phone number; hotspot support on compatible devices and plans
Where it doesn't
- Requires a compatible, unlocked device with eSIM support
- The listed $3.50 starter includes only 1 GB for one day
- Coverage is Japan-only
Our verdict on aloSIM
aloSIM sells prepaid eSIM data plans for travelers visiting Japan, with selectable trip durations and fixed-data or unlimited options. It suits visitors who want mobile data without arranging a local physical SIM, and who value an included phone number. Plans are managed through the aloSIM app and website; the device must be compatible and unlocked. Installation takes place through the app before travel, and the eSIM connects to a local network when the device reaches Japan.
For a short visit, the published Japan plan page shows a 1 GB plan valid for one day at a one-time price of $3.50 USD. The page also presents other trip durations and fixed-data and unlimited options, but the starter price should not be read as the cost of longer or unlimited use. Choosing a plan means matching both duration and data type to the trip. This range makes aloSIM relevant to travelers with different usage needs, though a one-day, 1 GB option is a limited fit for a longer stay unless another duration or data option suits.
Coverage is Japan-only on KDDI LTE/5G, with automatic local network connection upon arrival. Hotspot or tethering is supported on compatible devices and plans, and plans include a Hushed phone number. Activation depends partly on the device and operating system, so travelers should check compatibility before purchase. Pick aloSIM if you want Japan-specific prepaid data, a choice of trip length, and the included number; look elsewhere if you need coverage beyond Japan or cannot use an eSIM. Chat support is available 24/7.
aloSIM pricing
All 1 aloSIM plans and prices →
aloSIM fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Data type | Fixed |
| Data allowance | 1 GB |
| Validity | 1 days |
| Hotspot support | Yes |
| Coverage scope | Japan_only |
| Activation timing | First_connection |
| Deployment | Cloud, Mobile |
| Platforms | Web, iOS, Android |
| Support | Live chat · 24/7 |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | From $3.50 (source) |
| Website | alosim.com |
| Facts checked | 3 Oct 2026 |
Alternatives to aloSIM
- 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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