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Japan Travel SIM, eSIM & Pocket Wi-Fi Guide (2025)

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1. SIM Cards in Japan

Physical SIM cards are ideal for travelers with unlocked phones. You can purchase them at airports, convenience stores, or online. Plans typically offer fixed data (e.g., 3GB to 10GB) for a set duration and do not require return.

Physical SIM card

2. eSIM Options

eSIMs are digital SIMs downloadable via QR codes. Many platforms like Airalo or Ubigi offer Japan-specific plans. They’re convenient, especially if you want to activate before landing in Japan.

eSIM activation

3. Pocket Wi-Fi Rentals

Pocket Wi-Fi routers offer unlimited internet access and are suitable for groups or high-data users. They must be picked up and returned (usually at airports). Advance booking is recommended.

Pocket Wi-Fi device

4. Comparison Table

Type Provider Data Plan Duration Price Return Required
SIM Card Mobal 25GB / 8 days 8–31 days ¥4,730 〜 No
eSIM Airalo 1GB / 7 days 7–30 days ¥700 〜 No
Pocket Wi-Fi Ninja WiFi 1GB / 1 day 1day〜 ¥440 〜 Yes

*Unlimited with Fair Usage Policy (FUP).

5. Major Providers

6. FAQs

Q: Can I get a SIM at the airport?
A: Yes, SIM vending machines and counters are available at major airports.

Q: Is my phone compatible with eSIM in Japan?
A: Check if your device is unlocked and supports eSIM (iPhone 11+, Pixel 4+).

7. Best Option by Purpose

  • Solo traveler (short stay): eSIM (Airalo)
  • Family/group trip: Pocket Wi-Fi (Ninja WiFi)
  • Extended solo stay: SIM (Mobal)

8. Tips & Warnings

  • Book in advance during peak seasons (e.g., March–April, Golden Week).
  • Return Wi-Fi units on time to avoid late fees.
  • Check APN settings and unlock status before arrival.
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