Get a 🇯🇵Japan eSIM
$8.00USD
Fast mobile data for Japan. Installs in seconds, easy to set up before travel.
Prepaid Unlimited
Japan eSIM Plans
Data Plans for Travelers (2026)
Carrier roaming in Japan often costs $10 to $15 per day, while aloSIM plans currently start at $4.50. aloSIM is a practical choice for travelers who want fast setup, lower costs, and reliable mobile data.
Every plan also includes a free Hushed phone number, which helps with hotel check-in SMS, WhatsApp setup, and local app verification.
Key Takeaways
- aloSIM gives you a Japan eSIM that installs before departure in about 90 seconds, and connects as soon as you arrive.
- We’re proud to partner with KDDI Corporation for fast mobile data anywhere in Japan. Use your phone like a local, even when you’re a tourist!
- Data plans currently start from $4.50, which is far cheaper than roaming on your carrier plan from home, which will probably cost you $10 to $15 per day for minimal usage.
aloSIM Japan eSIM Plans at a Glance
| Data Plan | Data | Duration | Price |
|---|---|---|---|
| Japan 1 GB | 1 GB | 7 days | $4.50 |
| Japan 2 GB | 2 GB | 15 days | $6.50 |
| Japan 3 GB | 3 GB | 30 days | $8.00 |
| Japan 5 GB | 5 GB | 30 days | $11.00 |
| Japan 10 GB | 10 GB | 30 days | $18.00 |
| Japan 20 GB | 20 GB | 30 days | $25.00 |
| Japan Unlimited 3 Days | Unlimited | 3 days | $11.50 |
| Japan Unlimited 5 Days | Unlimited | 5 days | $19.50 |
| Japan Unlimited 7 Days | Unlimited | 7 days | $27.00 |
| Japan Unlimited 10 Days | Unlimited | 10 days | $35.00 |
| Japan Unlimited 15 Days | Unlimited | 15 days | $49.00 |
| Japan Unlimited 30 Days | Unlimited | 30 days | $74.00 |
All plans include a free Hushed phone number.
Tips for Staying Connected in Japan
- Install your Japan eSIM before your trip (it won’t work until you arrive) if you’re planning ahead. Switch your device’s cellular data source to your Japan eSIM before travel, so you connect to KDDI as soon as you arrive in Japan.
- Make sure your eSIM is active before you try to use Suica, Pasmo, or PayPay. Japan runs on mobile data for transit, payments, directions, and translation.
- Download Google Maps offline before your flight to avoid dead zones and interruptions.
FAQs about using a Japan eSIM
Does Japan support eSIM?
Yes. aloSIM works in Japan on major local network infrastructure.
Will eSIM work on my phone or tablet?
Most newer devices are already eSIM-compatible.
How do I activate an eSIM in Japan?
aloSIM allows you to activate your Japan eSIM in a few minutes.
Is pocket WiFi or eSIM better for Japan travel?
For most travelers, aloSIM is the better option for its ease of use and setup.
How to Set Up Your Japan eSIM
Setting up your aloSIM Japan eSIM takes less than three minutes flat:
- Open the aloSIM app, and tap ‘My eSIMs’
- Tap on your Japan eSIM, and tap ‘Install eSIM’
- The installation usually takes about 60 seconds
- Activate your eSIM in your device’s cellular settings when you're ready to travel
- Connect to KDDI upon arrival in Japan.
Network Coverage in Japan
aloSIM partners with KDDI Corporation for prepaid travel data plans. Coverage is strongest in populated areas and major tourist zones.