2025年 July

10 Best sim cards in 日本

Last Updated - 20/07/2025

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Best Choice
01

KNTBROS

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Docomo Prepaid SIM Unlimited 30 Days Japan sim Prepaid Data Only/sim card japan unlimited prepaid
9.8

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

[Capacity/Days] Unlimited/ 30 days after APN settings; Japan only
Open Date: Open by November 30, 2024. Can be used for 30 days after opening
(docomo's NVNO Line) With the expiration date of the pre-paid SIM can be used with unlimited capacity. No one-day limitations. Tethering is also available
(Help Desk with 3 Languages) Supports 365 days of Japanese, English, and Chinese phone windows that are safe for those who temporarily return to Japan and foreign people who visit visit. Phone number is included in the instruction manual
(Disposable type without verification) No need to worry about the creca or account. You can use it by setting APN on the day you receive it. When using in Japan, please use the device with a technical compliance mark

￥3,590
Best Value
02

KNTBROS

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Docomo Prepaid SIM Japan 25 GB 90 days sim Prepaid Data Dedicated 4G LTE Physical SIM/prepaid sim 25gb 90days japan travel (25GB/90 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

[Stable communication via docomo line] With the expiration date of the pre-paid SIM, the docomo 4G LTE high-speed data capacity up to 25GB. The area and speed are stable and can be used in tethering
[Capacity/days] 25 GB (can be used at low speed 32 kbps after exceeding capacity/90 days after APN setting
Opening date: Open by January 31, 2025. Can be used for 90 days after opening
It can be used with SIM rerouters other than smartphones, if it is compatible with the following frequency bands: Band 1, band 3, band 19. *There are cases where 3 are required
(With SIM pin) Uses Japanese IP
(Help Desk with 3 Languages) Supports 365 days of Japanese, English, and Chinese phone windows that are safe for those who temporarily return to Japan and foreign people who visit visit. Phone number is included in the instruction manual
(Disposable type without verification) No need to worry about the creca or account. You can use it by setting APN on the day you receive it. When using in Japan, please use the device with a technical compliance mark

￥3,280
03

accfe

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プリペイドSIM 日本 10GB 大容量ソフトバンクプリペイドSIMカード日本国内用 SIMカード Softbank Prepaid SIM プリペイドデータ専用 4GLTE対応 japan (tfn-sim-10g)
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

Prepaid SIM Japan Soft Bank 10 GB Japanese SIM Card Prepaid SIM Card Prepaid SIM Prepaid SIM Prepaid for Data Only 4G LTE Compatible with Japan Contract Not Required, Easy Large Capacity APN Setting Required
Expiration Date: 12/05. The expiration date is written in the instruction manual (English language not guaranteed). No Limit of Usage Days: With the SIM expiration date, you can use the high speed data capacity up to 10 GB. Utilizing SoftBank's circuits for stable area and speed and tethering. Limit on Daily Communication Rate: You can use unlimited data capacity limits. *Limit to the maximum SIM card data communication
4G LTE Compatible Bands: Band 1 (2,100 MHz), Band 3 (1,700 MHz), Band 8 (900 MHz), Band 41 (2,500 MHz), WCDMA (3G) Compatible Band1 (2,100 MHz), Band 8 (900 MHz)
(Safety Desk in 3 Languages) 24/7 support window, not only Japanese but also English/Chinese. (Japanese support 9:00 to 18:00 on weekdays) in Japanese, English, Chinese
(Safe Softbank Communication) Compatible with Soft Bank, 4G LTE. *Prepaid SIM card is a SIM free (unlocked SIM) smartphone or tablet. Not compatible with SIM locked devices. The transmission speed may vary depending on the device used. For those other than LTE areas, it can communicate with 3G. Softbank Line Softbank Line Softbank

￥2,280
04

bigconnect

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Sim for Japan SIM 360 Day 10 GB Prepaid SIM Card Rakuten Carrier Dedicated Data Communication No Contract Required with SIM Pin Multilingual Support (Japanese, English, Chinese, Korean) (10 GB for 360
9.5

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

Rakuten Carrier: This is a data dedicated SIM card that uses the Rakuten network and supports 5G even in pre-paid mode. 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)
No contract required: No pre-paid sim opening or activation required; No contract required; No complicated procedures such as credit cards or bank accounts. Simply set the APN on the day you receive it and use it. The frequency band is compatible with [5G] Band1, [4G] Band1, Band3, Band8
No Expiration Date: The high-speed data capacity can be used up to 10 GB. (Usage Period: 360 days from the date that the SIM card is inserted and set the data. There is no limit on the amount of communication per day, but the data capacity is limited. *Communication will stop if the data capacity is exceeded 360 days or 10 GB
Japanese Customer Support: We offer customer support in Japanese, English, Chinese, and Korean that is safe for those who temporarily return to Japan, teleworkers, and foreign visitors

￥1,880
05

Nippon SIM

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Nippon SIM for Japan 4G-LTE SIM Card, 180 Days 15 GB (Up to 128 kbps After Data Runs Out), 3-in-1 (Standard/Micro/Nano), Data Communication Only (Does Not Support Voice Calls/SMS), NTT Docomo 4G-LTE Network, Only Works With SIM-free Devices, No Additional Costs, Credit Card, Contract Not Required, Multilingual Manual Included (English Language Not Guaranteed), Support in Japan (Japanese, English, Japanese, English, Chinese)
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

Setup: Remove the IC part of the SIM card and insert it into your device.Android devices: Please set up APN information on your device. iPhone/iPad: Download the profile from the QR code in the description.You will need to connect to Wi-Fi in order to download the profile.If you are using a discount SIM, please remove the profile of that SIM before setting up this one
No troublesome contracts and full support: No requirements for activation, personal authorization, credit card registration, contracts, administration fees, etc.DHA Corporation Ltd. is an MVNO (mobile virtual network operator, filing number A-30-16419).Support available in Japan in: Japanese, English, and Chinese-
High-speed communication with NTT Docomo’s network: 180 days 15 GB high-speed communication on NTT Docomo’s high-speed network with wide-area coverage. Even if your purchase runs out of data, you can use it at a speed of up to 128 kbps for 180 days.Compatible SIM Sizes: Works with standard, micro, and nano sizes; Product package: SIM card/SIM pin/multilingual manual (Japanese/English/Chinese/Korean/Thai)
Expiration Date: 6/30/2023: When using in Japan, make sure to use with a device marked for technical compliance.Please start using this product by the expiration date.It cannot be used once the expiration date has passed.(Usage Period: 180 days from the date of first data communication after inserting the SIM card and setting it up. Please start using the SIM before the expiry date printed on package in order to enjoy the full duration
Compatible devices: Compatible with SIM-free iPhones/smartphones, Wi-Fi routers, tablets, 4G and LTE-compatible computers.Supports tethering.Compatible Devices: iPhone, iPad, smartphone, mobile WiFi router, tablet and LTE computer.Compatible 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)

￥2,980
06

mewfi

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[Japan SIM] Prepaid sim 180 Days 10 GB Stable High Speed Communication 5G/LTE/4G High Speed Line, Long Expiry Rakuten SIM Mewfi Data Communication Dedicated Physical SIM
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

【Multilingual Customer Suboat】 If you have any questions, please contact our online customer support team if you have any questions before or during use. It is compatible with Japanese, English, and Chinese
How to Use: Before using this Japanese SIM card on your iPhone, delete the settings files in your phone and download the new settings files. Android phones require APN settings. There is a detailed setup guide in the instruction manual that comes with SIM card
High Speed Data Communication: This is a Rakuten SIM card that can be used at 180 days of high speed data in Japan. Communication will stop when 10GB is used
Compatible Device Conditions: This Japanese SIM card can only be used with unlocked cell phones, and the phone must support Band3. Otherwise, it will not work. The transmission speed may differ depending on the device used. It is also not compatible with Wi-Fi routers and tablets
(Data Communication Only) Expiration Date: This SIM card expires up to May 31, 2025. Usage period: After inserting the SIM card and completing the setting, it takes 180 days from the date of first data communication. This Rakuten SIM card is only for data communication, calls and SMS are not included

￥1,630
07

bigconnect

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On Amazon

Docomo SIM Card, For Domestic Use, 10 GB, 180 Days Valid, Genuine Docomo Carrier, 4G-LTE High Speed Connection, Prepaid SIM Card, Japan Docomo Preaid Data SIM / 180 Days 10 GB, 4G LTE Data,
9.0

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

Feature 5: (Phone calls with app) You cannot make calls with your phone number, but you can also use voice calls with Line, Skype, etc. PLU TO GO SIM (no need to settle for settings, if you plug the SIM into the device and it will start communication). Multi-language manual included. Complete Customer Support!
Feature 4: Japanese customer support. We offer a 24-day customer support for those who temporarily return to Japan, for telework, or for those who visit
Feature 3: Carrier: IIJDocomo. SIM Size: 3 in 1 size (It has a thin cutout, so you can extract it to fit the size you use. You may not be able to fail, but please note that the warranty is not provided.)
Feature 2: SIM unlock terminal / SIM free terminal *Docomo lock terminal cannot be used. If the device uses a tethering function, you can share data communication and use high speed communication. Frequency Band: [4G] Band1 2,100 MHz Band3 1,800 MHz Band8 900 MHz Band28 700 MHz [3G] 2,100 MHz 900 MHz *May not be available depending on the model. If you use ios, you may not be able to communicate with other cheap SIM card settings that are saved. You need to remove the cheap SIM APN profile
Feature 1: Card expiration date: 10 months after purchase (when unopened), can be used for up to 180 days after the first time of use. Prepaid SIM card that can be used for 4G high-speed data transmission. 10 high-speed data, effective for 180 days. Docomo Prepaid SIM Card with strong signal Please enjoy this item

￥2,190
08

bigconnect

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On Amazon

SIM for Japan 180 Day 10 GB Prepaid SIM Card Rakuten Data Communication Dedicated No Contract Needed SIM Pin Multilingual Support (Japanese, English, Chinese, Korean) (10GB for 180days)
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

Rakuten Carrier: This is a data dedicated SIM card that uses the Rakuten network and supports 5G even in pre-paid mode. 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)
No contract required: No pre-paid sim opening or activation required; No contract required; No complicated procedures such as credit cards or bank accounts. Simply set the APN on the day you receive it and use it. The frequency band is compatible with [5G] Band1, [4G] Band1, Band3, Band8. If you cannot use it, please enter APN in p.rcomm.jp. Please refer to the detailed product description
No Expiration Date: The high-speed data capacity can be used up to 10 GB. (Usage Period: 180 days from the date of first data communication after inserting the SIM card and setting it. There is no limit on the amount of communication per day, but the data capacity is limited. *Communication will stop if the data capacity is exceeded 180 days or 10 GB
Japanese Customer Support: We offer customer support in Japanese, English, Chinese, and Korean that is safe for those who temporarily return to Japan, teleworkers, and foreign visitors

￥1,680
09

KNTBROS

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On Amazon

Softbank prepaid sim Japan Softbank 10GB sim for prepaid data 4G LTE sim with pin / prepaid sim 10gb japan with sim pin
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

[Capacity/Days] 10 GB / Can be used up to expiration date. Japan domestic only/stop when 10 GB data capacity is reached. Non-rechargeable
Works with smartphones, tablets, routers and more When using in Japan, please use the device with a technical compliance mark
We have an inquiry window with LINE that can support 365 days. We can help you solve any problems and other problems. (Multilingual Support)
Phone calls can be answered via the app: Although you cannot make calls with your phone number, you can also make voice calls with Line, Skype, etc. No one-day data usage restrictions or slow internet connections
No APN Setting Required: Just plug the SIM into your ios (iPhone) device. (Android device requires APN setting)
It can be used with SIM rerouters other than smartphones, if it is compatible with the following frequency bands: Band 1, band 3, band 8. *There are cases where 3 are required
Expiration Date: December 23, 2024
(Soft Bank Direct Line for Fast Stable Communication) With the expiration date of SIM, you can use the SoftBank 4G LTE high-speed data capacity up to 10GB. Unlike cheaper SIM rental lines, it uses a straight line so you can use it in a stable area and speed and tethering
(Capacity Testable) You can check the amount of communication used from the dedicated site. Multi-language manual and SIM card slot removal pin included

￥2,590
10

mewfi

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On Amazon

[Japan sim] 180 days 30 GB Data Communication Dedicated 4G/LTE Softbank SIM Prepaid sim Real Name Confirmation No Reservation Required Easy Setup 3 in 1 (Standard/Micro/Nano) sim
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

【High Speed Data Transmission】This SoftBank SIM card can be used for high-speed data communication. When data usage is reached, the network is automatically disconnected
No reservation required: After receiving the SoftBank SIM card, insert the SIM card into your phone, it will automatically connect to the internet. If you cannot connect the connection, you can configure the APN according to the instruction or contact customer support
Japanese Manual Included: The SIM card expires from January 20, 2025. You can insert the SoftBank SIM card into your phone and use it from the date you start data communication to the expiration data. Please use this Japanese SIM card within its expiration date. SIM card expiration date is updated regularly
Data Dedicated SIM: This Japanese SIM card cannot be extended or additional charged. This is a data-specific SIM card and no phone number is provided
Compatible Devices: This Japanese SIM card can only be used for mobile phones with unlocked SIM devices. Not compatible with SIM locked devices. Compatible frequency bands: 3G/W-CDMA: Band 1 (2100MHz), Band 8 (900MHz), B11 (1500MHz), 4G/LTE: Band 1 (2100MHz), Band 3 (1800MHz), Band 8 (900MHz), Band 1 (1500MHz), Band 41 (25000MHz)

￥2,980

10 Best sim cards in 日本

Docomo Prepaid SIM Unlimited 30 Days Japan sim Prepaid Data Only/sim card japan unlimited prepaid

Docomo Prepaid SIM Japan 25 GB 90 days sim Prepaid Data Dedicated 4G LTE Physical SIM/prepaid sim 25gb 90days japan travel (25GB/90 days)

プリペイドSIM 日本 10GB 大容量 ソフトバンク プリペイドSIMカード 日本国内用 SIMカード Softbank Prepaid SIM プリペイド データ専用 4GLTE対応 japan (tfn-sim-10g)

Sim for Japan SIM 360 Day 10 GB Prepaid SIM Card Rakuten Carrier Dedicated Data Communication No Contract Required with SIM Pin Multilingual Support (Japanese, English, Chinese, Korean) (10 GB for 360

[Japan SIM] Prepaid sim 180 Days 10 GB Stable High Speed Communication 5G/LTE/4G High Speed Line, Long Expiry Rakuten SIM Mewfi Data Communication Dedicated Physical SIM

Docomo SIM Card, For Domestic Use, 10 GB, 180 Days Valid, Genuine Docomo Carrier, 4G-LTE High Speed Connection, Prepaid SIM Card, Japan Docomo Preaid Data SIM / 180 Days 10 GB, 4G LTE Data,

SIM for Japan 180 Day 10 GB Prepaid SIM Card Rakuten Data Communication Dedicated No Contract Needed SIM Pin Multilingual Support (Japanese, English, Chinese, Korean) (10GB for 180days)

Softbank prepaid sim Japan Softbank 10GB sim for prepaid data 4G LTE sim with pin / prepaid sim 10gb japan with sim pin

[Japan sim] 180 days 30 GB Data Communication Dedicated 4G/LTE Softbank SIM Prepaid sim Real Name Confirmation No Reservation Required Easy Setup 3 in 1 (Standard/Micro/Nano) sim

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プリペイドSIM 日本 10GB 大容量ソフトバンクプリペイドSIMカード日本国内用 SIMカード Softbank Prepaid SIM プリペイドデータ専用 4GLTE対応 japan (tfn-sim-10g)