2026年 April

10 Best simカード in 日本

Last Updated - 02/04/2026

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Best Choice
01

リチャージSIM

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[Recharge SIM] 100 Giga, 365 Days, No Contract, No Monthly Subscription, Can Be Used Repeatedly With Gigari-Charge, 4G, LTE/5G, docomo, NTT Docomo [SIM-100GB/365 Days]
9.9

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

[Save money on how much you use it] 24/365 days after payment is completed. Giga can be reused at any time, so even if you run out of gigas, you can use it again and again. [Can only charge Japanese giga]
[Other Precautions] *Please register SIM and set APN within 60 days of purchase. (Wifi environment is required). *Please restart after setting APN. When using with iOS devices, please restart after deleting the configuration prefiles from other SIM devices left behind. Data communication is possible if the 5G and 4G (LTE) is displayed. Depending on your device, the antenna pick may not stand up
Service and Communication Specifications: This SIM card corresponds to the area of the NTT Docomo. This is the best effort service so the speed of communication may vary depending on the environment and crowded conditions. Since it is dedicated to data transmission, calls using phone numbers and SMS (short message service) cannot be used. ・Tethering is supported, but due to differences between devices
Compatible with models / SIM size / SIM free / Unlock terminal is required. Multi-cut SIM (standard SIM/micro SIM/nano SIM)
Compatible Bands: 1 (2.1 GHz), 3 (1.8 GHz), 19 (800 MHz), 21 (1.5 GHz), 28 (700 MHz), 42 (3.5 GHz), n78 (3.6 - 3.7 GHz), n79 (4.5 - 4.6 GHz), N27 GHz). 27.8GHz )
Communication Standards: 4G LTE/5G compatible
Can be charged for 30 days after the giga is used or the effective period is out. If the charging date has passed, the SIM will not be usable and you will need to purchase a new SIM. The maintenance time of NTTdocomo Company may not be able to open immediately. (22:00 - Wednesday 9:00) At the end of maintenance, it will be opened sequentially and charging will be processed

￥12,980
Best Value
02

リチャージSIM

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[Recharge SIM] 50 Giga, 365 Days, No Contract, No Monthly Subscription, Can Be Used Repeatedly With Gigari-Charge, 4G LTE/5G/docomo/NTT Docomo [SIM-50GB/365 Days]
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

[Save money on how much you use it] 24/365 days after payment is completed. Giga can be reused at any time, so even if you run out of gigas, you can use it again and again. [Can only charge Japanese giga]
Service and Communication Specifications: This SIM card corresponds to the area of the NTT Docomo. This is the best effort service so the speed of communication may vary depending on the environment and crowded conditions. Since it is dedicated to data transmission, calls using phone numbers and SMS (short message service) cannot be used. ・Tethering is supported, but due to differences between devices
Compatible with models / SIM size / SIM free / Unlock terminal is required. Multi-cut SIM (standard SIM/micro SIM/nano SIM)
Compatible Bands: 1 (2.1 GHz), 3 (1.8 GHz), 19 (800 MHz), 21 (1.5 GHz), 28 (700 MHz), 42 (3.5 GHz), n78 (3.6 - 3.7 GHz), n79 (4.5 - 4.6 GHz), N27 GHz). 27.8GHz )
Communication Standards: 4G LTE/5G compatible

￥9,980
03

Nippon SIM

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Nippon SIM for Japan Prepaid Sim Card, 180 Days, 10 GB, Sim, Docomo Communication Network, For Data Communication, 4G, LTE, 3-in-1 (Standard/Micro/Nano), Sim Free, Compatible with Devices Only
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Setting Method】Remove the IC part of this SIM card and insert it into your device Android Devices: Set the APN information on your device iPhone/iPad: Just plug in a SIM card It is basically set to automatic configuration If it is not set automatically, please configure the APN according to the instructions in the manual If you use cheap SIMs, please delete the profile of the cheap SIM beforehand
【Final use start date: within 6 months of purchase】For use within Japan, please use with a device that has a Technical Standards Compliance Mark Please ensure to start using it by the expiration date Once the usage period is over, it will no longer be usable Usage Period: 180 days from the date of first data communication after inserting the SIM card and setting it up )
No troublesome contracts! Full Support: No need for activation, personal identification, credit card registration, contracts, or administrative fees DHA Corporation Co., Ltd. is a Japanese MVNO (Mobile Virtual Network Operator, notification number A-30-16419) We provide consistent support from sales to customer service, and offer support in Japanese/English/Chinese If you have any questions about the product or setup method, please feel free to contact us
High-speed communication with NTT Docomo network 180 days 10 GB high-speed communication on NTT Docomo's network with wide-area coverage Even after using up the purchased data capacity, it can be used at a maximum speed of 128 kbps for 180 days Compatible SIM Sizes: Can be switched between standard, micro, and nano sizes. Product Packaging: SIM card, SIM pin, multilingual manual (English language not guaranteed)
Compatible devices: Compatible with SIM-free iPhones/smartphones, Wi-Fi routers, tablets, 4G and LTE-compatible computers Tethering is available Compatible devices: iPhones, iPads, smartphones, mobile WiFi routers, tablets, LTE computers 【Supported Frequency Bands】4G/LTE: Band 1 (2.1GHz) / Band 3 (1.8GHz) / Band 19 (800MHz) / Band 21 (1.5GHz) / Band 28 (700MHz) / Band 42 (3.5GHz); 3G/W-CDMA: Band 1 (2.1GHz) / Band 6 (800MHz) / Band 19 (800MHz)

￥1,980
04

bigconnect

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[Japan sim] Japan Prepaid SIM 360 Days 20 GB Large Capacity Genuine Rakuten Carrier Use Prepaid SIM Card for Japan SIM Card Prepaid SIM Prepaid Data Only 4 GLTE Compatible (360 Days 20GB (Rakuten
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

[Strongest Rakuten Plan] Data dedicated SIM card uses Rakuten network and supports 5G prepaid too! 4G and LTE are also available. When using a Prepaid SIM card, you will need a SIM free smartphone or tablet that has been unlocked to the device. Not compatible with SIM locked devices. The transmission speed may differ depending on the device used
Phone calls using the app: You cannot use the phone number, but you can also use the LINE or Skype voice calls. Use PLU TO GO SIM card (insert SIM and start communication immediately)
Japanese Customer Support: We offer customer support in Japanese, English, and Chinese, which is safe for those who temporarily return to Japan, teleworkers, and foreign visitors
Expiration Date: Final start date: May 31, 2025. Please start using this product within the expiration date. The high speed data capacity can be used up to 20 GB. When the high speed 20GB data runs out, the communication will stop. (Usage Period: 360 days from the date that the SIM card is inserted and set the data. ) and high speed data transmission up to 10GB. When the month use exceeds 10GB, the maximum communication speed will be reduced to 256 kbps until the end of the month (this slow speed data is not included in the 20GB plan, it is unusable). The speed limit will be automatically released on the next day of the month. In addition, if the data is used for a total of 20 GB, the communication will be stopped
(High Standard Communication Quality) Among the 4 major carriers, it has earned the highest communication quality in the industry in the widest region. Rakuten Mobile has continuously improved communication quality. The frequency band is compatible with [5G] Band1, [4G] Band1, Band3, Band8
(Disposable, No Need to Confirm Identity) No complicated procedures such as credit cards or bank accounts required. Simply set the APN on the day you receive it and use it

￥2,680
05

ＤＸＨＵＢ

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[Korea eSIM Unlimited] 7 Days Prepaid eSIM 4G/5G Data Communication Only, Sim-Free Support, No Personal Certification, No Contract Required, Instant Operation, Easy Setup, LINE Japanese Language
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Compatible Devices】This product can be used with eSIM compatible iPhones, iPads, and other smartphones
This product is not recommended for use with mobile WiFi router (pocket WiFi). After the activation code is issued, please make sure to install the eSIM on any device that uses eSIM "within 24 hours". The eSIM may not be usable if 24 hours after the issue
This product is an unlimited prepaid eSIM for Korean data communication. Compatible with LG Uplus and SK Telecom 4G/5G line on major local lines, allowing you to use the internet comfortably during travel or business trips
Operating Environment: WiFi connection is required for downloading, installing and setting the eSIM. We hope you prepare the environment by yourself
Once eSIM is activated, it cannot be reread or used with other devices (including new devices). It is not compatible with voice calls and SMS, but it can be used to make LINE, WhatsApp, Facebook, and WeChat
No personal certification required. No need to register passport information or contract procedures. You can use it without having to worry about your personnel
How to Use: 1. Access the dedicated page from the QR code on the eSIM package and create an account. 2. Install the eSIM after the activation code is released. 3. After installation, add eSIM and set APN You're ready to go! You can check the date and expiration date on the customer's dedicated page. For more details, please refer to the setup guide enclosed
For eSIM compatible devices. This product is for eSIM compatible devices. Physical SIM card is not included
Easy to set up and ready to use: Just scan the QR code inside the package and follow the guidelines and you can use it immediately after completing the setting
Customer-specific page: There is a customer-specific page that allows you to quickly check the usage period. You can check the status of your line anytime, anywhere, and manage multiple circuits at once

￥2,980
06

KNTBROS

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Docomo Prepaid SIM Unlimited 30 Days Japanese SIM Prepaid Data Only / SIM Card Japan unlimited prepaid
8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【docomo's MVNO line】You can use the prepaid SIM with unlimited capacity as long as it is within the validity period No daily limit Tethering is also available
【No identity verification, disposable type】No troublesome procedures such as credit cards or bank accounts You can use it on the same day you receive it if you configure the APN settings For use within Japan, please use this product with a device that has a Technical Standards Compliance mark
【Capacity/Duration】 Unlimited / 30 days after APN setup, exclusive for Japan
[Trilingual Help Desk Support] We have a 365-day phone support service in Japanese, English, and Chinese for those temporarily returning to Japan and foreign visitors to Japan The instructions included with the product have the phone number listed
Activation Period: Activation by February 28, 2026 Usable for 30 days from activation

￥3,590
07

KNTBROS

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Docomo Prepaid SIM Unlimited 30 Days Japanese SIM Prepaid Data Only / SIM Card Japan unlimited prepaid
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【docomo's MVNO line】You can use the prepaid SIM with unlimited capacity as long as it is within the validity period No daily limit Tethering is also available
【No identity verification, disposable type】No troublesome procedures such as credit cards or bank accounts You can use it on the same day you receive it if you configure the APN settings For use within Japan, please use this product with a device that has a Technical Standards Compliance mark
【Capacity/Duration】 Unlimited / 30 days after APN setup, exclusive for Japan
[Trilingual Help Desk Support] We have a 365-day phone support service in Japanese, English, and Chinese for those temporarily returning to Japan and foreign visitors to Japan The instructions included with the product have the phone number listed
Activation Period: Activation by February 28, 2026 Usable for 30 days from activation

￥3,590
08

KNTBROS

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Docomo Prepaid SIM Japan 25GB 90 Days sim Prepaid Data Only 4G LTE Physical SIM/prepaid sim 25GB 90days Japan Travel (25GB/90 Days)
8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Stable communication with docomo network】As long as it is within the validity period of the prepaid SIM, you can use up to 25GB of docomo's 4G LTE high-speed data capacity Coverage area and speed are stable, and tethering is also available
【No identity verification required, disposable type】No troublesome procedures like credit cards or bank accounts You can use it the same day you receive it if you configure the APN settings For use within Japan, please use with a device that has a Technical Standards Compliance mark
【Multi-language support help desk】We provide a 365-day support help desk in Japanese, English, and Chinese for those temporarily returning to Japan or foreign visitors The included instructions have the phone number listed
【Includes SIM Pin】For use with IP in Japan
Compatible with SIM-free routers other than smartphones if they support the following frequency bands【Supported bands】band1, band3, band19 *All three need to be supported
Capacity/Days: 25 GB, available at a low speed of 32 kbps after the capacity is exceeded; 90 days after APN settings
Activation Period: Must be activated by April 30, 2026 Can be used for 90 days after activation

￥3,280
09

KNTBROS

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Docomo Prepaid SIM Japan 25GB 90 Days sim Prepaid Data Only 4G LTE Physical SIM/prepaid sim 25GB 90days Japan Travel (25GB/90 Days)
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Stable communication with docomo network】As long as it is within the validity period of the prepaid SIM, you can use up to 25GB of docomo's 4G LTE high-speed data capacity Coverage area and speed are stable, and tethering is also available
【No identity verification required, disposable type】No troublesome procedures like credit cards or bank accounts You can use it the same day you receive it if you configure the APN settings For use within Japan, please use with a device that has a Technical Standards Compliance mark
【Multi-language support help desk】We provide a 365-day support help desk in Japanese, English, and Chinese for those temporarily returning to Japan or foreign visitors The included instructions have the phone number listed
【Includes SIM Pin】For use with IP in Japan
Compatible with SIM-free routers other than smartphones if they support the following frequency bands【Supported bands】band1, band3, band19 *All three need to be supported
Capacity/Days: 25 GB, available at a low speed of 32 kbps after the capacity is exceeded; 90 days after APN settings
Activation Period: Must be activated by April 30, 2026 Can be used for 90 days after activation

￥3,280
10

ＭＥＷＭＥＷホーム

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Rakuten Line, Japan eSIM, 90 Days, Selectable from 10 GB to 100 GB, No Contract Required, No Monthly Price, QR Instant Release, Data Communication, SIM Free Devices, For Long-Term Use, Instruction
8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

eSIM usage time will be calculated from the same day the QR code is sent by email. We recommend acquiring a QR code just before you start using it
QR code will be issued immediately after purchase. No need to mail a physical SIM and is ready-to-use pre-paid eSIM without waiting for arrival
Only available for SIM free and eSIM enabled devices. Data transmission only, so there is no voice call or SMS function. Also compatible with tethering
Note: 2. iPhone devices have a dedicated profile installed, and Android devices need to set up the APN manually. Please refer to the PDF attached to the mail or mailing instructions for detailed setup
Note: 1. Once the eSIM is removed, it cannot be reinstalled. Reissue, a 200 yen fee may be incurred
Japanese domestic eSIM using Rakuten Line. Supports 5G/4G for stable data transmission. It can be used in a wide range of situations, including traveling, temporary home return, long-term stays, and more
Any questions are accepted 24/7! If you have any questions before purchasing or during using, please feel free to contact our LINE customer support
90 days expiration period, large capacity flat plan selectable from 10GB to 100GB. No contract required, no monthly fees, you can use it as much as you need. Great for long-term use

￥2,380

10 Best simカード in 日本

[Recharge SIM] 100 Giga, 365 Days, No Contract, No Monthly Subscription, Can Be Used Repeatedly With Gigari-Charge, 4G, LTE/5G, docomo, NTT Docomo [SIM-100GB/365 Days]

[Recharge SIM] 50 Giga, 365 Days, No Contract, No Monthly Subscription, Can Be Used Repeatedly With Gigari-Charge, 4G LTE/5G/docomo/NTT Docomo [SIM-50GB/365 Days]

Nippon SIM for Japan Prepaid Sim Card, 180 Days, 10 GB, Sim, Docomo Communication Network, For Data Communication, 4G, LTE, 3-in-1 (Standard/Micro/Nano), Sim Free, Compatible with Devices Only

[Japan sim] Japan Prepaid SIM 360 Days 20 GB Large Capacity Genuine Rakuten Carrier Use Prepaid SIM Card for Japan SIM Card Prepaid SIM Prepaid Data Only 4 GLTE Compatible (360 Days 20GB (Rakuten

[Korea eSIM Unlimited] 7 Days Prepaid eSIM 4G/5G Data Communication Only, Sim-Free Support, No Personal Certification, No Contract Required, Instant Operation, Easy Setup, LINE Japanese Language

Docomo Prepaid SIM Unlimited 30 Days Japanese SIM Prepaid Data Only / SIM Card Japan unlimited prepaid

Docomo Prepaid SIM Unlimited 30 Days Japanese SIM Prepaid Data Only / SIM Card Japan unlimited prepaid

Docomo Prepaid SIM Japan 25GB 90 Days sim Prepaid Data Only 4G LTE Physical SIM/prepaid sim 25GB 90days Japan Travel (25GB/90 Days)

Docomo Prepaid SIM Japan 25GB 90 Days sim Prepaid Data Only 4G LTE Physical SIM/prepaid sim 25GB 90days Japan Travel (25GB/90 Days)

Rakuten Line, Japan eSIM, 90 Days, Selectable from 10 GB to 100 GB, No Contract Required, No Monthly Price, QR Instant Release, Data Communication, SIM Free Devices, For Long-Term Use, Instruction

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