JapanShopHelper
Japan Travel SIM Card (30 days)Bestseller

Japan Travel SIM Card (30 days)

Unlimited data SIM card for 30 days. Works with most unlocked phones. No contract needed.

Price Range¥3,000 ~ ¥5,000

Specifications

Network: Docomo 4G LTE | Data: Unlimited | Duration: 30 days | SIM Size: Nano/Micro/Standard | Tethering: Yes

Buy on Amazon Japan (Amazon US) →Share on X

❤️Why Tourists Love This

Stay connected throughout your entire Japan trip without worrying about expensive roaming charges. This 30-day SIM gives you unlimited data on Docomo's reliable 4G LTE network, covering even rural areas and mountain regions. Perfect for Google Maps navigation, translation apps, and sharing your travel photos instantly.

📋How to Use in Japan

1. Make sure your phone is SIM-unlocked before your trip

2. Insert the SIM card at the airport or your hotel

3. Follow the included APN setup guide (available in English)

4. Restart your phone — you're connected!

5. Data is unlimited but may throttle after heavy use

Reviews & Traveler Voices

4.3/ 3,500+ reviews on Amazon Japan

What Reviewers Say

Reviewers consistently praise the reliable Docomo network coverage, even in rural areas like Hokkaido and Shikoku. Setup takes about 5 minutes with the included English instructions. Some users note that speeds may slow during peak hours in major cities, but it remains fast enough for maps and messaging. The 30-day duration is ideal for extended trips.