---
product_id: 494562041
title: "Japan Data ONLY SIM Card 15 Days | Unlimited Internet Data (10GB at 4G LTE High Speed Data Then downgrade to 128kbps) |Docomo KDDI Network | Hotspot tethering Supported"
brand: "sim2roam"
price: "S$31"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/494562041-japan-data-only-sim-card-15-days-unlimited-internet-data
store_origin: SG
region: Singapore
---

# 10GB at 4G LTE Speed Tri-Cut SIM Compatibility 15 Days Unlimited Data Japan Data ONLY SIM Card 15 Days | Unlimited Internet Data (10GB at 4G LTE High Speed Data Then downgrade to 128kbps) |Docomo KDDI Network | Hotspot tethering Supported

**Brand:** sim2roam
**Price:** S$31
**Availability:** ✅ In Stock

## Summary

> 🌍 Stay Connected, Stay Adventurous!

## Quick Answers

- **What is this?** Japan Data ONLY SIM Card 15 Days | Unlimited Internet Data (10GB at 4G LTE High Speed Data Then downgrade to 128kbps) |Docomo KDDI Network | Hotspot tethering Supported by sim2roam
- **How much does it cost?** S$31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/494562041-japan-data-only-sim-card-15-days-unlimited-internet-data)

## Best For

- sim2roam enthusiasts

## Why This Product

- Trusted sim2roam brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightning-Fast Speeds:** Enjoy 10GB of blazing 4G LTE speed before transitioning to 128kbps.
- • **Seamless Connectivity:** Experience 15 days of unlimited internet data, perfect for your travel needs.
- • **Versatile Compatibility:** Tri-cut SIM fits all devices: standard, micro, or nano.
- • **Plug-and-Play Convenience:** No activation or registration required—just insert and go!
- • **24/7 Support at Your Fingertips:** Access English customer support anytime, ensuring peace of mind.

## Overview

The Japan Data ONLY SIM Card offers 15 days of unlimited internet access, featuring 10GB of high-speed 4G LTE data before downgrading to 128kbps. It supports hotspot tethering for mobile phones and tablets, comes as a tri-cut SIM for all device sizes, and requires no activation. Plus, enjoy 24/7 English customer support for a hassle-free experience.

## Description

Japan Data ONLY SIM Card 15 Days | Unlimited Internet Data (10GB at 4G LTE High Speed Data Then downgrade to 128kbps) |Docomo KDDI Network | Hotspot tethering supported

## Features

- Good for 15 days use with unlimited Internet Data (First 10GB at 4G LTE High-Speed then down to 128kbps)
- Available for Hotspot tethering (only for Mobile phones) and tablets
- No Activation or registration is needed, simply insert the SIM into your unlocked device and it will be ready to use!
- Tri-cut SIM. All SIM sizes are available, including standard/micro/nano SIM. Pack comes with English user instruction
- NO Phones Calls or Texts. No refill available.
- 24/7 English Customer support available.

## Product Details

- **Brand:** SIM2ROAM
- **Service Provider:** Docomo KDDI Network
- **Cellular Technology:** LTE
- **Product Dimensions:** 4.33"L x 3.94"W
- **UPC:** 759245645513

## Images

![Japan Data ONLY SIM Card 15 Days | Unlimited Internet Data (10GB at 4G LTE High Speed Data Then downgrade to 128kbps) |Docomo KDDI Network | Hotspot tethering Supported - Image 1](https://m.media-amazon.com/images/I/71sPXauvwDL.jpg)

## Available Options

This product comes in different **Model** options.

## Questions & Answers

**Q: Can I use this sim in Taiwan**
A: No.  We purchased a separate sim for Taiwan by Mewfi -  Taiwan SIM 30days 10GB.  Worked flawlessly

**Q: Are there instructions in English with the sim card?**
A: The sim I ordered came with English instructions.

**Q: Does this sim card have an expiration date? Do I have to activate it before a date?**
A: Only valid for 15 days during use in Japan

**Q: Does it work for IPhone 7 and iPhone 11 ?**
A: The instructions say it only works for Android 11 or newer and iphone 8 or newer. I wish they disclosed this in the description because my phone is android 10 and I leave for my trip in 3 days and I'm stuck with a sim that won't work.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for a trip!
*by C***A on May 26, 2025*

Great! My phone is old and isn't compatible with eSIM. So this SIM card worked perfectly for a 2 week trip to Turkiye, Italy, and Poland. I followed the instructions on the packet, and I had to use one of the troubleshooting tips to get it to work (just had to restart the phone, then it worked). It worked great. Would buy again. Thank you!

### ⭐ 2of 4 DOA, remaining 2 dead after 2 days.
*by B***P on March 31, 2023*

Update April 5,2023After 2 days, the remaining 2 (30 day 15G SIM card) that initially worked also got disconnected and China Mobile shows up as the network. I know I did not use up the 15G of data because I got an eSIM from SingTel Airalo, and I used 500M in 2 days on the SingTel network. I am lucky that I still have a slow cell data service and have international data. Albeit at the unbearable speed of 256kb. It was my life line to get the Airalo data service that delivers eSIM card online.If you have to use a physical SIM card, get the 15 day ones and not the 30 day ones. The 15 day SIM cards worked all the way to the end of my trip.Original review …The SIM cards worked like a charm when they do. I bought 6, installed 4. 2 worked on power up. Good. Not the same for the other 2. The other 2 connected briefly and got kicked off. “iPhone not activated Contact you carrier if this problem continues to occur”. It looked like to me that the SIM card is not authorized to work in Japan. So I checked the carrier. And it says China Mobile (in Chinese). Of course these 2 wouldn’t work! It would work in China! So this is a packaging problem. They we mixing up SIM card from the wrong country! Luckily, I bought two extra as backups. The other backup SIM cards (15 day 10G) worked just as expected.

### ⭐⭐⭐⭐⭐ Game changer
*by J***C on May 17, 2025*

My daughter studied abroad in Paris for 4 months. This esim card saved us so much money. Easy to install and she had zero issues with calls, texts or email. Well worth the money

## Frequently Bought Together

- Japan Data ONLY SIM Card 15 Days | Unlimited Internet Data (10GB at 4G LTE High Speed Data Then downgrade to 128kbps) |Docomo KDDI Network | Hotspot tethering supported
- Japan SIM Card 15 Days Data Only | 10GB High-Speed 4G LTE + Unlimited Data at Reduced Speed | No Roaming Needed for Faster, Safer Access | Hotspot tethering Supported | Docomo Network | Made in Japan
- INIU Portable Charger, Slimmest 10000mAh 5V/3A Power Bank, USB C in&out High-Speed Charging Battery Pack, External Phone Powerbank Compatible with iPhone 16 15 14 13 12 Samsung S22 S21 Google iPad etc

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**Shop now:** [https://www.desertcart.sg/products/494562041-japan-data-only-sim-card-15-days-unlimited-internet-data](https://www.desertcart.sg/products/494562041-japan-data-only-sim-card-15-days-unlimited-internet-data)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-13*