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[Southeast Asia 5 Countries eSIM] 50GB Total Data | Instant Activation, No Contract | QR Code Setup

eSIM > Southeast Asia 5 Countries > Total Data

¥12,570

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Southeast Asia 5 Countries eSIM 50GB Total Data | Instant Activation, No Contract

C.T.S's Southeast Asia 5 Countries eSIM “50GB Total Data” is a prepaid eSIM on Singapore: Singtel / Malaysia: Celcom, Digi, Maxis / Thailand: TRUE, DTAC / Indonesia: Telkomsel, XL / Vietnam: Viettel, Vinaphone, MobiFone. Your QR code arrives by email right after purchase — just scan it to finish setup. No contract and no auto-renewal. Duration: 3–30 days (3, 5, 7, 10, 15, 30). Operated by C.T.S Co., Ltd., a Japanese company.

Plan details

Coverage	5 countries: Singapore, Malaysia, Thailand, Indonesia, Vietnam
Network	Singapore: Singtel / Malaysia: Celcom, Digi, Maxis / Thailand: TRUE, DTAC / Indonesia: Telkomsel, XL / Vietnam: Viettel, Vinaphone, MobiFone
Data	50GB total for the whole period
Duration	3–30 days (3, 5, 7, 10, 15, 30)
Phone number & SMS	None (data only)
Delivery	QR code by email (within minutes)

Pay today · 30 days ¥12,570

Get online in 3 simple steps

Instant digital delivery. Scan your QR code and connect in minutes.

Choose your plan

Select your trip duration and data allowance, then checkout online.

Receive your QR code

Receive your digital activation QR code by email within minutes. No shipping wait.

Scan and connect

Scan the QR code in phone settings and get online right after arrival.

What you get

Delivery Instant QR code (via Email)

Network Japan 4G / 5G (KDDI & SoftBank)

Tethering Supported (Free hotspot sharing)

Calls / SMS Data only (App VoIP calling)

Device support eSIM-capable unlocked phones

Contract None (Prepaid lock-free)

Why choose C.T.S

C.T.S eSIM Typical carrier SIM

Activation speed Instant QR scan Shop visit or shipping wait

Paperwork / ID check None required Strict Japanese ID check

Contract period None (Prepaid lock-free) 1–2 years lock-in + fee

Support languages English, Japanese & Multilingual Japanese only

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

Real people, real eSIMs

Instant setup & helpful support for your stay in Japan.

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

C.T.S Japan same-day packaging and dispatch

Same-Day Dispatch · Express Delivery

Carefully packaged daily for fast delivery across Japan

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Dedicated Support

★★★★★

“Always providing the best support. Truly appreciate the helpful and friendly care.”

Response time was super fast. Whenever I had questions navigating mobile connectivity in Japan, the support team patiently helped me until everything was settled.

Customer from Indonesia · Resident in Japan Verified

Friend Referral

★★★★★

“Extremely satisfied with the service. Will definitely recommend to friends needing a SIM!”

Clear registration steps and very polite staff. I feel 100% confident recommending C.T.S to students and co-workers moving to Japan.

International Student · Repeat Customer Verified

Easy Activation

★★★★★

“Setup was smooth and ready in minutes. Strong network coverage and great service.”

Followed the simple step-by-step guide and internet was working right away. Rock-solid connection on the nationwide SoftBank network.

Japan Resident · Data SIM User Verified

10/5 Stars Service

★★★★★

“5 stars isn't enough, I'd give 10 out of 5 stars for the extraordinary help!”

When I had a mix-up with the delivery locker at my building, support immediately contacted the courier service to ensure my package arrived safely.

Delivery & Technical Support Customer Verified

Helpful Consultation

★★★★★

“Pre-order guidance was super helpful and warm. A reassuring 5-star experience.”

They explained the data allowance plans and group bundle discounts clearly so I could make the best choice without hesitation.

Pre-purchase Consultation · SoftBank Network Verified

Instant Japan eSIM QR code activation on smartphone

Instant eSIM · Scan & Connect

Simply scan the QR code received via email to connect immediately

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Questions before you buy

Need help with compatibility, activation or your QR code?

WhatsAppで問い合わせ Messengerで相談

Dial *#06# on your phone. If an EID number appears and your device is carrier-unlocked, it supports eSIM.

Your QR code is generated and delivered automatically to your email within minutes after checkout.

Yes! Dual-SIM phones allow keeping your home SIM active for SMS/OTP while using C.T.S eSIM for local Japan mobile data.

Validity starts only when your eSIM connects to a supported local network in Japan, not when scanned.

Yes, personal hotspot (tethering) is fully supported for laptops and tablets at no extra charge.

WhatsAppで問い合わせ

Japan eSIM. Online in minutes.

No shipping wait. Scan your QR code and connect instantly across Japan.

Get my eSIM 配送不要なら、日本eSIMが¥460〜 →

[Southeast Asia 5 Countries eSIM] 50GB Total Data | Instant Activation, No Contract | QR Code Setup