Japan KDDI Unlimited Data eSIM

🗾 GTeSIM for Japan

Discover Japan – where ancient temples nestle beside neon-lit skyscrapers, and cherry blossoms frame the snow-capped peak of Mount Fuji. Wander through Kyoto’s golden Kinkaku-ji, stroll the bamboo groves of Arashiyama, and soak in an onsen overlooking the Japanese Alps. From the electric energy of Tokyo’s Shibuya Crossing to the serene torii gates of Miyajima, every season brings a new face – spring petals, summer festivals, autumn leaves, and winter snows – woven together with tea ceremonies, kaiseki cuisine, and timeless craftsmanship.

📌Important Notes: 

After exchanging the QR CODE, it must be scanned and activated within 150 days.

🌍 Coverage

Country: Japan

• Full network coverage nationwide
• All taxes included — no hidden roaming charges

⚠ Coverage may exclude some remote areas. Confirm with customer support before purchase.

⚡ Network & Hotspot

• Carrier: KDDI
• Speed: 5G/4G
• Plan Type: Data Only (No calls or SMS)
• Tethering / Hotspot: Supported

📦 Data Packages

Flexible plans to suit your travel needs:

• Japan 3–10 Day Unlimited Data Plan, high-speed data at 10 Mbps throughout with no speed throttling.

📱 Supported Devices

Works on eSIM-enabled, carrier-unlocked devices.
👉 Check full list of supported devices

⚠ Make sure your device supports eSIM before purchase. Unsure? Contact our support team.

🧩 Installation Process

Simple Setup – No Physical SIM Required

After exchanging the QR CODE, it must be scanned and activated Within 150 Days

Buy now, use later. You can install your eSIM at any time, but only turn it on when you actually need it.

You must activate your plan within 150 days of purchase. After that period, it will activate and expire automatically.

3 Simple Steps to Get Connected

1️⃣ Place your order

Your eSIM QR code will receive it via email or in the GTeSIM app inbox after payment.

2️⃣ Scan & install using Wi-Fi

Use a stable Wi-Fi connection to scan and install the eSIM.

Once scanned, the eSIM is added to your phone.

To install manually, go to Settings > Cellular/Mobile Data > Add eSIM > Use QR Code.

3️⃣ Enable data roaming at your destination

After arriving at the destination, turn on data roaming—connection is automatic.

Go to Settings > Cellular or Mobile Data and find your GTeSIM line. Turn it ON.

Make sure Data Roaming is ON for your GTeSIM line.

That’s it! Your phone will automatically connect to the best available network. Enjoy your data!

✅ No eKYC or ID verification required

⏱ Installation takes just minutes

⏰ Validity

• Starts when connecting to any supported network
• Daily reset based on UTC+9 timezone

🔔 Refund Policy

• Technical Issue: Refund available within 48 hours after activation if the eSIM cannot be activated or used due to a GT eSIM technical issue (Proof required, subject to verification)
• Before Activation: Refund available before installation/activation, with a 10% service fee deducted
• After Activation: No refund once the eSIM is successfully activated (unless required by law)

✈️ Suitable for Multiple Use Cases

For Every Traveler, Every Journey – ideal for culture lovers exploring shrines and castles, foodies savouring sushi and ramen, anime and manga fans visiting Akihabara and themed cafes, business travellers shuttling between Tokyo and Osaka, digital nomads working from quiet Kyoto machiya, students on exchange programmes, and remote workers needing consistent connectivity – all across Japan’s four seasons and endless discovery.