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Japan data SIM | DJB

4.9
267 reviews
  • Exclusive Access to Major Networks in Japan — NTT Docomo, SoftBank, KDDI & Rakuten
  • Enhanced Coverage — Stay Connected in Remote Areas
  • High-Speed Connectivity — Optimized Network Routing
  • Extensive Local Network Access — 10+ Backup Routes for Reliable Connectivity
  • Flexible Plans for Your Trip — Choose Only the Days You Need
Validity
Data Details
Network
Voice & Hotspot
Quantity
Subtotal
Please select a plan first

Early Bird Discount

10% OFF — Start Date: 180 days in advance

20% OFF — Start Date: 240 days in advance

Need to use your SIM earlier? Please contact our customer service team for assistance.

Plan comparison

Quick overview of each plan’s key features and differences

Spec name Validity Data Details Network Voice & Hotspot
Changri ULTRA 1–30 days Unlimited Data (up to 2000 Mbps)
NTT Docomo / Softbank / KDDI / Rakuten (5G / 4G)
Voice: No, Hotspot: Yes
Changri PLUS 1–30 days Unlimited Data (up to 1000 Mbps)
NTT Docomo / Softbank / KDDI / Rakuten (5G / 4G)
Voice: No, Hotspot: Yes
Changri 1–30 days Unlimited data (fair use: 2–5GB/day may be limited)
NTT Docomo / Softbank / KDDI (5G / 4G)
Voice: No, Hotspot: Yes
Youri 1–30 days 500MB / 1GB per day, then throttled
NTT Docomo / Softbank / KDDI (5G / 4G)
Voice: No, Hotspot: Yes
Reiwa 4–15 days / 20 days / 30 days Unlimited Data
Softbank (5G / 4G)
Voice: No, Hotspot: Yes
Wanri 2–15 days / 20 days / 30 days Unlimited Data
DOCOMO / KDDI (5G / 4G)
Voice: No, Hotspot: Yes

Why choose us?

DJB Typical C2C marketplace
Team Telecom expertise
Network routing DJB dedicated infrastructure
Plan flexibility Flexible days and data options Fixed / fewer options
After-sales support Real-time specialist support No carrier training
Carrier partnership Direct integration

DRO Technology

Worried that native routing is deprioritized, roaming routes are unstable, or type-2 carrier bandwidth is too slow? DJB covers all of this. Exclusive DRO technology stitches every route class together, then AI selects the best path — fast, stable connectivity so you can go online without worry when you travel.

Delivery & pickup

No shipping on weekends or holidays — orders ship the next business day. Delivery times depend on the carrier.

Convenience pickup Convenience pickup
7-Eleven store pickup 7-Eleven store pickup
Home delivery Home delivery
In-store pickup In-store pickup
Airport pickup Airport pickup
Delivery about 5–7 days
Order by 5 days before departure
  • At checkout choose Convenience pickup and enter the recipient name, phone, and address correctly
配送約 2–3 天
Order by 5 days before departure
  • At checkout choose 7-Eleven store pickup and select a store
  • After delivery you will receive an SMS; please bring ID to collect at the store
Delivery about 1–2 business days
Order by 3 days before departure
  • At checkout choose Home delivery and enter a correct shipping address
No shipping required
Same-day order and pickup available
  • Pickup: 13F, No. 268, Fuhui Rd, Xinzhuang Dist, New Taipei City
  • Hours: Mon–Fri 10:00–18:00 (contact support on national holidays)
  • Bring ID for building access and show the order confirmation email
No shipping required
Order by 1 day before departure
  • At checkout choose Airport pickup and select your terminal
  • Show the order confirmation email when picking up
  • Pickup hours: 07:30–22:00
Taoyuan Airport terminal pickup locations

Important Notes

  • Data SIM僅支援手機裝置使用,不適用於電信商綁定之手機、平板電腦、翻譯機、Wi-Fi 分享器、改裝機及智慧手錶等設備。
  • 請於抵達Destinations後再更換 SIM 卡,勿於出發前或未抵達Destinations前插卡。若於非使用Destinations提前插卡,可能因系統啟用Regions錯誤而導致無法正常使用或卡片異常。
  • 若為雙卡槽手機,為確保網路正常運作,建議將我們的 SIM 卡插入「卡槽 1」。如不需接收Taiwan簡訊,「卡槽 2」可保持空置,以避免干擾連線穩定性。
  • 使用Days以Destinations當地時間計算,開通當日即為第 1 天。例如:當日 09:00 開通,當日 23:59 即為第 1 天結束。
  • SIM 卡採即插即用設計,如遇使用問題,請即時聯繫客服。

Cancellation & Refund Policy

  • Returns or exchanges are accepted within 7 days of delivery. Items must be returned unused, in their original condition, and with all original packaging intact.
  • Used SIM cards are eligible for a refund if customer service confirms a manufacturing defect or fault with the SIM card.
  • In the event of natural disasters or other circumstances beyond control, supporting documentation may be required for refund consideration.
  • For eligible refunds, the refund amount is limited to the actual amount paid for the order.
  • If you experience any issues with your SIM, please contact customer service before returning home. Refund requests made after your trip will not be accepted.
  • Network coverage and signal quality may vary by country, region, and location. Refunds will not be provided for poor or unstable signal in a specific area.

Customer reviews

4.9
267 reviews
cutepig0426
2026-03-04

Nagoya was smooth this time — awesome! Will buy again. Kumamoto last time was smooth too!

MJ
2026-03-04

Correct item, undamaged, shipped super fast. Great quality and value — will buy again.

eltonx
2026-03-04
Verified

Data: unlimited with plenty left — awesome! Quality: stable. Network: no issues the whole time.

馬友友
2026-03-04

Fast shipping and efficient service. I always buy from them — hoping this trip goes well too.

FAQ

Search FAQs about physical SIM purchase and use

All reviews

Based on 267 reviews

李筱婷 Verified
Japan
Mar 23, 2026

Second purchase. Stable network throughout Fukuoka — plug in and go. Very convenient.

吳柏宏
Japan
Mar 23, 2026

Questions answered quickly, shipped fast, Japan coupon included, and the SIM comes with a how-to — highly recommend.

吳柏宏 Verified
Japan
Mar 23, 2026

Questions answered quickly, shipped fast, Japan coupon included, and the SIM comes with a how-to — highly recommend.

洪淑惠
Japan
Mar 23, 2026

Used this network for a five-day family trip in Japan — messaging worked fine and the overall experience was very smooth.

林妍妍 Verified
Japan
Mar 23, 2026

Fast shipping; support was helpful and explained everything clearly!

cutepig0426
Japan
Mar 04, 2026

Nagoya was smooth this time — awesome! Will buy again. Kumamoto last time was smooth too!

MJ
Japan
Mar 04, 2026

Correct item, undamaged, shipped super fast. Great quality and value — will buy again.

eltonx Verified
Japan
Mar 04, 2026

Data: unlimited with plenty left — awesome! Quality: stable. Network: no issues the whole time.

馬友友
Japan
Mar 04, 2026

Fast shipping and efficient service. I always buy from them — hoping this trip goes well too.

鄭業成 Verified
Japan
Mar 04, 2026

Easy Japan SIM install, stable signal, smooth data. Flexible 1–30 day unlimited plans — worry-free for travel.

bengi0922
Japan
Mar 04, 2026

A Japan-trip essential — bought many times. When setup questions come up, live chat replies quickly.

黃郁婷 Verified
Japan
Feb 25, 2026

Uploading lots of photos and videos every day — heavy use, but unlimited really was enough. Smooth for days, no sudden dropouts. Had a great time!

李宇倫 Verified
Japan
Feb 25, 2026

Took the whole family to Japan — prepared SIMs for everyone. Swap the card on arrival and you're online. No more fighting over pocket Wi‑Fi.

陳欣怡 Verified
Japan
Feb 25, 2026

First time setting up a SIM myself — much easier than expected. Support explained clearly and replied fast; online soon after inserting the card.

劉芷羽 Verified
Japan
Feb 25, 2026

Your Japan SIM was very smooth! Signal right after landing with little setup, stable speeds for maps and photos — will buy again next Japan trip.

李凱文 Verified
Japan
Feb 25, 2026

Needed data for a Japan business trip — email and meetings stayed smooth with no dropouts.

朱又甄 Verified
Japan
Feb 02, 2026

Hokkaido trip (Otaru, Sapporo, Hakodate) on unlimited. Swapped the card on the plane; auto-connected on arrival. Solid signal, no dropouts — worth it.

程志傑 Verified
Japan
Feb 02, 2026

Inserted the card at Narita and stayed online all the way to Kawaguchiko.

林馥萱 Verified
Japan
Feb 02, 2026

Support replied quickly about shipping before the trip. Smooth data across Kyushu (Hakata, Yufuin, Kurokawa Onsen, Kumamoto). Excellent experience!

嚴廷睿 Verified
Japan
Feb 02, 2026

Convenient home delivery — third repurchase. Easy setup, solid Osaka speeds with no lag, and better priced than carrier roaming deals.