Japan flag
Speed4G / 5G
NetworkKDDI / SoftBank / DOCOMO
Excellent
Based on

Travel eSIM for Japan

Plan Type

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Data Type

Service Days

Daily Data

USD: $2.80(≈$2.80 / Day)
You will get
by purchasing eSIM and recommending esim.

*If you can't use your plan, you’ll be eligible for a refund.

*Secure payment guaranteed.

Plan Type
Plan TypePlan DescriptionSpeed Policy
DailyFixed high-speed data is available each day. Continue using data at reduced speed after the allowance is used.Speed is reduced to 128–512 kbps after the daily allowance is used, and restored when the daily allowance resets.
TotalIncludes a fixed total amount of high-speed data.No speed reduction.
UnlimitedUnlimited data with a daily high-speed data allowance.Speed is reduced to 5-10 Mbps after the high-speed allowance is used until the next allowance resets.
Fast & Stable Across the Globe.

Features

  • Plan Type

    Data Only

  • Activation Policy

    Please ensure activation within 60 days of purchase.

  • Network

    KDDI / SoftBank / DOCOMO

  • VALIDITY POLICY

    The validity period starts when the eSIM connects to any supported networks.

  • eKTY (Identity Verification)

    Not Required

  • Speed

    4G / 5G

  • Other Info

    The eSIM QR code will arrive in your email within a few minutes.

  • Hotspot

    You can use a hotspot to share data with other devices.

  • Top up

    Avaliable

  • Validity period calculation

    Roaming IP: 24 hours; Local IP: UTC+9

What is an Unlimited Data Plan?

An Unlimited Data Plan provides unlimited data throughout your plan validity. After reaching the daily high-speed data allowance, the connection speed will be reduced, while internet access will remain available for essential online activities.

How is the experience with speed limits on an Unlimited Plan?

After the high-speed data allowance is used, your speed is reduced to 5 Mbps. This is still fast enough for navigation, messaging, browsing, social media, and video calls, so you can stay connected throughout your trip.

Date calculation rules:

Plan time calculations follow either a 24-hour cycle or UTC+9, depending on the plan. The validity period begins when the plan is activated, and daily data or speed limit resets will occur according to the applicable time calculation rule.

How do installation and activation work?

Install and activate your eSIM within 30 days of receiving the QR code. Your plan starts immediately upon activation, and all validity and data cycles are calculated from that time.

Our Network Partners

See which mobile operators are available for your eSIM and learn about their network capabilities, local presence, and the connectivity they provide at your destination.

KDDI

  • Founded in 1984 – Major Japanese telecom provider with strong market presence.
  • Advanced 4G/5G Network – Supporting high–quality mobile access across Japan.
  • Digital Convenience – Helping users with navigation, messaging, and online services.

SOFTBANK

  • Established in 1986 – Japanese telecom brand with a strong consumer presence.
  • Extensive 4G/5G Services – Providing mobile connectivity across Japan.
  • Connected Lifestyle – Supporting travel apps, browsing, and everyday communication.

DOCOMO

  • Founded in 1991 – Japan's leading mobile operator with deep industry experience.
  • Nationwide 4G/5G Network – Delivering broad mobile connectivity across Japan.
  • Travel–Friendly Access – Supporting maps, bookings, and digital communication.

More affordable regional eSIM plan

If you're traveling to multiple countries, the regional packages below offer a better value.

Asia: Singapore & Malaysia & Thailand

Southeast Asia: 4 Countries

Frequently Asked Questions

A Japan eSIM is a digital SIM that allows you to connect to mobile data without a physical SIM card. It's ideal for travelers, offering instant connectivity across Japan with no need to swap SIM cards.

  • iPhone: Scan the QR code sent to your email or use the iRoamly app, then follow the on-screen instructions to add the eSIM.

  • Android: Open Settings > Network & Internet > Mobile Network > Add carrier, then scan the QR code to install.

Check your device compatibility here. Most modern iPhones and Android phones support iRoamly eSIMs.

Yes. You can keep your main SIM card in your phone and use the iRoamly Japan eSIM for data. Just set the eSIM as your data SIM in your phone settings to avoid roaming charges.

Some plans support top-ups. Simply purchase an add-on to continue using data without reinstalling the eSIM. For plans without top-ups, you can buy a new Japan eSIM and reinstall it.

Yes. iRoamly Japan eSIM supports hotspot/tethering. In rare cases, your device may restrict hotspot sharing due to system security settings—but 95% of users can share data seamlessly.

No, the iRoamly Japan eSIM provides data only. You can make calls or send messages using apps like WhatsApp, Skype, or Viber.

It depends on your usage. If you're unsure, use the iRoamly Data Calculator to select the best plan for your trip.

A Japan eSIM is more convenient: it doesn't require carrying extra devices, charging, or returning equipment—just install and go.

The validity period starts when you enable roaming in your phone settings, not when you install it. Install the eSIM before traveling, but only activate it upon arrival in Japan to start your plan.

Most iRoamly eSIMs allow self-checking via the iRoamly app or website under 'My eSIM'. If your eSIM doesn't support this, contact support@iroamly.com for your balance.

We recommend installing your eSIM a few days before departure while connected to a stable internet network. Installation at busy airports may fail due to slow public WiFi. Don't enable roaming until you arrive in Japan.

No. iRoamly Japan eSIM offers data only. Use internet-based apps to call or text while in Japan.

After purchase, your eSIM will appear in your iRoamly account and be sent via email with a QR code. If you don't receive it within 15 minutes, check your email address and contact support@iroamly.com if needed.

Yes. On dual-SIM or Apple devices, assign your primary SIM for calls/SMS and the iRoamly Japan eSIM for mobile data. Make sure your main SIM doesn't incur roaming charges.

Refunds are available if:

  • Your device is incompatible.

  • Your trip is canceled or you no longer need the eSIM.

  • Network issues persist after following our troubleshooting guide.

Approved refunds are credited to your original payment method within 3–5 business days. For full details, see our Refund Policy.

iRoamly vs Airalo & Holafly

iRoamly offers daily, total, and unlimited plans, free hotspot use, and 500MB free eSIMs in 100+ countries. In contrast, Airalo has two plan types and Holafly only unlimited, but both throttle speeds and restrict hotspot sharing.

iRoamly logo
Airalo logo
Holafly logo
Data Types
3
2
1
Unlimited Data
no sudden throttling
Throttled to 1Mbps after 3GB/day
Reduced speed after 2GB/day
Hotspot
Unlimited share
support
500mb/day
Free eSIM
100+ countries
7 countries
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Go to Settings → Cellular (or Mobile Data)

Get Connected, Wherever You Go

Use the iRoamly App to get new eSIMs, manage your plans, and add more data while traveling.