SoftBank SIM Card Japan – 10GB/Month × 12 Months｜Annual Prepaid Plan｜No Contract｜High-Speed Data – Fast Shipping
C.T.S Co., Ltd.

SoftBank SIM Card Japan – 10GB/Month × 12 Months｜Annual Prepaid Plan｜No Contract｜High-Speed Data – Fast Shipping

sim

¥15,000 ¥17,500
Pay with VISA Mastercard JCB AMEX Konbini Bank transfer Cash on delivery
3D Secure 256-bit SSL Encryption
Free Nationwide Shipping Across Japan (On Select Products)
Bilingual Customer Support

SoftBank Data SIM – 10GB/Month × 12 Months | Annual Prepaid Plan

Total Price: ¥15,000 (one-time payment for 12 months)  
No monthly billing – no extra fees, no contract required.  

This SIM card is perfect for international residents, students, and long-term visitors in Japan who need reliable internet for daily use. Provides 10GB of high-speed data each month, ideal for browsing, messaging, maps, and email. Simple, affordable, and easy to manage with a single upfront payment.  

✔ 10GB/month × 12 months – SoftBank 4G LTE network  
✔ Annual prepaid plan – no contract, no renewal required  
✔ One-time payment – affordable and easy to manage  
✔ Compatible with smartphones, routers, and Pocket WiFi  
✔ Wide coverage across Japan  
✔ Quick setup – ready to use upon arrival (simple APN settings)  

Pay today · Default Title ¥15,000

Online in 3 simple steps

No shop visit, no Japanese paperwork stress.

1

Order in 2 minutes

Pay by card, konbini, bank transfer or cash on delivery.

2

Receive it at home

Arrives in 1–3 days with bilingual English & Japanese setup guide.

3

Insert and go

Put the SIM in, follow the quick APN guide, and you are online.

What you get

Network SoftBank 4G LTE
High-speed data 50GB per month
After 50GB Unlimited standard speed (Top up anytime)
Calls / SMS Data only (App VoIP calling)
SIM size Nano / Micro / Standard 3-in-1
Monthly payment 20th–25th of each month

Why choose C.T.S

C.T.S Data SIM Typical carrier SIM
Contract lock-in None (Zero cancellation fee) 2-year lock-in + heavy penalty
Delivery / Start Delivered to your mailbox Lengthy in-store paperwork
Payment options Card, konbini, COD, bank Japanese credit card only
Support languages English, Japanese & Multilingual Japanese only

*Based on our 2026 research comparing contract terms, setup fees, and cancellation policies.

Real people, real SIMs

Every order is packed by our team in Saitama.

★ 4.9/5.0 · 98.4% Customer Satisfaction · Saitama Bilingual Support

Questions before you buy

Still unsure? Our team answers in English, Japanese & Multilingual.

Chat on WhatsApp Chat on Messenger
You pay ¥5,500 today, which covers activation and your first month. After that the plan is ¥2,850 per month (tax included), paid between the 20th and 25th of each month.
You continue to have unlimited data at a standard speed, or you can top up high-speed data anytime.
No Japanese bank account or local paperwork is required. You can pay with international cards, konbini, or cash.
Yes, cash on delivery (COD) and convenience store (konbini) cash payments are fully supported.
You can cancel or pause your plan at any time with no cancellation fees or lock-in penalties.
Chat on WhatsApp

50GB every month. No contract.

¥5,500 today (includes your first month), then ¥2,850 per month.

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