Japan Unlimited Data eSIM - 19 Days

Unlimited data in Japan with 18GB hotspot tethering and no daily limits

Looking for the best unlimited data eSIM for Japan? The Japan Unlimited Data eSIM - 19 Days gives you unlimited high-speed internet on the trusted KDDI network, one of Japan's leading mobile operators. Designed specifically for travellers, this eSIM provides reliable connectivity from the moment you arrive, without the hassle of airport SIM collection, expensive roaming charges, or searching for public WiFi.

Whether you're visiting Japan for sightseeing, business, remote work, or a multi-city tour, you'll have the data you need to use maps, translation apps, social media, travel bookings, video streaming, and messaging services throughout your trip.

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With unlimited data, no daily data cap, 18GB hotspot allowance, and access to the premium KDDI local network, this eSIM is built for travellers who want dependable internet across Japan.

Key Features

Why Travellers Choose This Japan eSIM

1. Unlimited Data Across Japan

Use mobile internet throughout your trip without worrying about running out of data.

Perfect for:

• Google Maps
• WhatsApp
• LINE
• Instagram
• TikTok
• YouTube
• Travel apps
• Online bookings
• Video calls

2. No Daily Data Caps

Many travel eSIMs advertise unlimited data but apply daily usage limits.

This plan provides unlimited internet access with no daily cap, allowing you to stay connected throughout the day without monitoring your usage.

3. Premium KDDI Network Coverage

Connect to one of Japan's most reliable mobile networks with coverage across:

• Tokyo
• Osaka
• Kyoto
• Nara
• Hiroshima
• Sapporo
• Nagoya
• Fukuoka
• Okinawa
• Mount Fuji region

And many other destinations across Japan.

4. High-Speed Connectivity up to 1Gbps

Enjoy fast internet suitable for:

• HD video streaming
• Uploading photos and videos
• Remote working
• Cloud applications
• Mobile hotspot usage
• Video conferencing

5. 18GB Hotspot Tethering Included

Share your connection with compatible devices during your trip.

Ideal for:

• Laptops
• Tablets
• Secondary devices
• Family members
• Travel companions

6. Instant eSIM Delivery

No physical SIM card required.

Simply:

1. Purchase online
2. Receive your QR code instantly by email
3. Install the eSIM on your device
4. Arrive in Japan
5. Connect automatically to the KDDI network

7. Buy Before You Fly

Your QR code remains valid for 180 days, allowing you to purchase and prepare your eSIM well before departure.

Supported Country

Japan

Device Compatibility

Compatible with unlocked eSIM-enabled smartphones and devices, including:

Apple: iPhone 11, iPhone 12 Series, iPhone 13 Series, iPhone 14 Series, iPhone 15 Series, iPhone 16 Series and newer supported models.

Samsung: Galaxy S20 Series, S21 Series, S22 Series, S23 Series, S24 Series, S25 Series, Galaxy Fold and Flip devices with eSIM support.

Google: Pixel 4 and newer supported Pixel devices.

Other Brands: Selected Motorola, Oppo, Sony, Xiaomi, Honor and other eSIM-compatible smartphones.

Please ensure your device supports eSIM technology and is unlocked before purchasing.

How to Activate

1. Purchase the Japan Unlimited Data eSIM.
2. Receive your QR code by email.
3. Open your device's eSIM settings.
4. Scan the QR code.
5. Install the eSIM profile.
6. Travel to Japan.
7. Connect to the KDDI network.
8. Start using unlimited data immediately.

Frequently Asked Questions

1. How much data is included?

This eSIM includes unlimited mobile data for the entire 19-day validity period.

2. Is there a daily data limit?

No. There are no daily data caps.

3. Which network does the eSIM use?

The eSIM uses the KDDI network in Japan.

4. Is hotspot sharing supported?

Yes. The plan includes 18GB of hotspot tethering.

5. Does it work throughout Japan?

Yes. The eSIM works across Japan where KDDI network coverage is available, including major cities, tourist destinations, and transport routes.

6. Does the eSIM include calls or SMS?

No. This is a data-only travel eSIM and does not include a local phone number, voice calls, or SMS messages.

7. When does the validity period begin?

The 19-day validity period starts when the eSIM first connects to a supported network in Japan.

8. How long is the activation QR code valid?

The QR code remains valid for 180 days from the date of purchase.