9 Best Japan Sim Card For 2024

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Are you planning a trip to Japan in 2023 and in need of a reliable SIM card? Look no further! In this article, we will explore the 9 best Japan SIM cards for 2023. Navigating a foreign country can be challenging, especially without a reliable means of communication. These SIM cards offer excellent coverage, affordable rates, and a range of data options to keep you connected throughout your travels in Japan. Whether you're a casual traveler or a business professional, finding the right SIM card is essential for a smooth and convenient journey. Let's dive into the top 9 options for 2023!


The Japan Data ONLY SIM Card is a convenient solution for travelers who need unlimited internet data during their visit to Japan. With 10GB of data available at high-speed 4G LTE, and unlimited data at a reduced speed of 128kbps after, users can browse the web, use social media, and stay connected throughout their trip. The SIM card supports hotspot tethering for mobile phones and tablets, making it easy to share the internet connection with other devices. The SIM card comes with all SIM sizes and English user instructions, and no activation or registration is required. With 24/7 English customer support available, users can receive assistance whenever needed. Please note that phone calls and texts are not available with this SIM card. Overall, the Japan Data ONLY SIM Card is a reliable and convenient option for travelers in Japan.

Key Features

  • Good for 15 days use with unlimited Internet Data (10GB at 4G LTE High-Speed then downgrade 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.
  • Specifications

  • Dimension: 4.33Lx3.94Wx0.04H
  • Pros

  • Good for 15 days of unlimited internet data
  • Easy to use, no activation or registration required
  • Can be used for hotspot tethering
  • Comes with all SIM sizes and English instructions
  • 24/7 English customer support available
  • Cons

  • No phone calls or texts available
  • Some users experienced connectivity issues
  • Limited data speed after 10GB

    The Japan Data ONLY SIM Card is a reliable solution for travelers in need of unlimited internet data during their trip to Japan. With easy set-up, hotspot tethering capabilities, and 24/7 customer support, it provides convenience and peace of mind. However, the lack of phone calls and texts, as well as occasional connectivity issues reported by some users, are notable downsides. Overall, it offers good value for the price and is highly recommended for those who rely on internet connectivity during their travels.


    The Travel Asia SIM (Silver) offers 6 GB of non-stop internet for 10 days in 27 top Asian destinations including Australia, South Korea, Myanmar, Malaysia, Singapore, Japan, China, Taiwan, and Hong Kong. This SIM card can be used with unlocked phones in 28 Asian countries and is ready to use without any activation process. The SIM is pre-registered before dispatch and typically activates within 5-10 minutes, or it can be manually activated by dialing #123#. With high-speed internet in Tokyo and Manila, this SIM card is perfect for travelers. However, some users have reported occasional connection issues in Myanmar. Overall, the Travel Asia SIM provides a convenient and reliable data option for exploring Asia.

    Key Features

  • 10-Day Non-stop roaming data with 6 GB at full speed
  • Works in 27 top Asian destinations and Australia
  • Compatible with UNLOCKED phones only
  • SIM is pre-registered and ready to use
  • English manual available for reference
  • Specifications

  • Dimension: 3.94L x 4.92W x 0.12H
  • Pros

  • Non-stop roaming data for 10 days
  • Wide coverage in Asian destinations
  • Easy to use with minimal activation process
  • Good internet speed in Tokyo and Manila
  • Cons

  • Occasional connection issues in Myanmar
  • Text messages in other languages can be overwhelming

    The Travel Asia SIM (Silver) is a reliable option for travelers who require uninterrupted internet access in various Asian countries. With 6 GB of high-speed data for 10 days, it offers extensive coverage in popular destinations such as Japan, China, Singapore, and more. The SIM card is hassle-free to use, requiring no complex activation process, and is compatible with unlocked phones. However, users should be aware of occasional connectivity problems in Myanmar and the influx of text messages in languages other than English. Despite these minor drawbacks, the Travel Asia SIM provides a convenient solution for staying connected while exploring Asia.


    The Japan SIM Card offers 10GB of data for 30 days, providing a convenient solution for travelers looking for high-speed internet access while in Japan. This prepaid SIM card is designed for use with unlocked phones and operates on the KDDI& DOCOMO network, ensuring reliable and fast 4G connectivity. The 3-in-1 design includes standard, micro, and nano SIM cards, compatible with various phone models. With a 9-month expiration date from the date of purchase, users can confidently make their plans in advance. The SIM card comes with a user manual for easy activation, and a dedicated after-sales service is available to assist customers with any issues. While some customers experienced difficulties with activation and customer service, many others found success and praised the helpfulness of the support team. Overall, the Japan SIM Card provides a reliable and convenient option for travelers seeking data-only connectivity.

    Key Features

  • Japan data only sim card, 10GB for 30 Days
  • High-speed 4G operating network
  • 3-in-1 Prepaid SIM Card, Standard, Micro & Nano
  • 9 Month expiration date from purchase
  • User manual provided for easy activation
  • Specifications

  • Dimension: 3.15Lx2.17Wx0.04H
  • Pros

  • Reliable and fast 4G connectivity
  • Convenient 3-in-1 design
  • Ample 10GB of data for 30 days
  • Long 9-month expiration date
  • User manual included for easy activation
  • Cons

  • Some customers experienced difficulties with activation
  • Customer service response can be slow

    The Japan SIM Card is a reliable option for travelers in need of data-only connectivity during their visit. With the convenience of a 3-in-1 design and 10GB of data for 30 days, users can enjoy high-speed 4G internet access throughout their stay. The 9-month expiration date provides flexibility for planning in advance, while the included user manual helps with easy activation. Despite some reported difficulties with activation and customer service, many customers praised the support team’s dedication to resolving issues. Whether for browsing, streaming, or staying connected on messaging apps, the Japan SIM Card offers a reliable solution for accessing the internet while exploring the beautiful country of Japan.


    Stay connected during your trip to Japan with the SoftBank Japan Prepaid SIM Card. This sim card offers 1GB of 4G/LTE data and unlimited 3G data per day, valid for 15 days. It works with all unlock smart cell phones, including iPhones and Android devices. Simply insert the sim card after arriving in Japan and turn on roaming to begin using it. The card covers most areas in Japan and requires no activation. Please note that if you exceed the daily 1GB limit of 4G/LTE data, the speed will reduce to 384 kbps until 0:00 the next day. Don't worry about expiration dates, as long as you insert the sim card before August 29. Stay connected and enjoy your trip in Japan!

    Key Features

  • 1GB in 4G/LTE and unlimited 3G data per day
  • Valid for 15 days
  • Triple cut sim card fits all unlock smart cell phones
  • Soft Bank network covers most areas in Japan
  • No activation required
  • Specifications

  • Dimension: 1.00Lx1.00Wx0.50H
  • Pros

  • Easy to use, no setup required
  • Good signal strength in various cities
  • Timely delivery
  • Works well with Samsung devices
  • Cons

  • Non-English language when sim card is inserted
  • Some users experienced trouble with data connectivity
  • Does not work with all Apple devices

    The SoftBank Japan Prepaid SIM Card is a convenient solution for staying connected while traveling in Japan. With its generous data allowance, wide coverage, and easy activation process, it offers a hassle-free experience. The card works well in most cities and is compatible with a range of smart cell phones. However, it’s important to note that some users have encountered issues with data connectivity, and the instructions may not be in English. Overall, if you’re looking for a reliable prepaid SIM card for your trip to Japan, this option from SoftBank is worth considering.


    The Nippon SIM for Japan is a 3-in-1 SIM card that offers 15GB of high-speed 4G/LTE data for 180 days. It supports tethering and works with the Docomo network, providing faster and more secure connections within Japan. The package includes a SIM card, manual in multiple languages, SIM PIN, and a plastic bag for storage. This SIM card is ideal for mid-term visitors, locals returning to Japan, or frequent business travelers. It is compatible with various devices, including smartphones, tablets, and LTE-enabled PCs. With local support and a reliable network, this SIM card offers peace of mind for users. Enjoy the convenience of staying connected without the hassle of activation or a contract.

    Key Features

  • 15GB high-speed 4G/LTE data
  • 180 days of use with Docomo network
  • Supports tethering
  • Local service for faster, securer connection
  • Includes SIM card, manual, SIM PIN, and plastic bag
  • Peace of mind Japan local support
  • Specifications


  • High-speed data for heavy users
  • Works with various devices
  • Fast and secure connections within Japan
  • Includes helpful package contents
  • End-to-end customer support
  • Cons

  • Speed throttled to 128kbps after all LTE data used
  • Limited to Japan without roaming
  • Potential compatibility issues with some devices
  • Expiration date for full 180 days of use

    The Nippon SIM for Japan offers a convenient and reliable solution for staying connected during your visit to Japan. With 15GB of high-speed data and a 180-day duration, it caters to heavy users and mid-term visitors. The SIM card supports tethering, allowing you to connect your devices and work efficiently. The local service provides faster and more secure connections within Japan, giving you peace of mind. While there are some limitations such as speed throttling and limited roaming, the overall performance and customer support make this SIM card a valuable option. Stay connected and enjoy your time in Japan with the Nippon SIM for Japan.


    The Japan Data ONLY SIM Card offers unlimited internet data for 7 days, with 5GB of high-speed data and 256kbps speed thereafter. It is a plug and play card with no registration required and free activation. The SIM card is compatible with all 4G/3G phones and has coverage across Japan. Please note that the card only provides internet access and does not support voice or SMS functions. If you have any queries, the customer service team is available to assist within 24 hours. However, there have been mixed reviews regarding signal issues and difficulties in reaching customer service. Overall, this product may not be recommended for those seeking reliable data connectivity during their trip to Japan.

    Key Features

  • 7 days unlimited data SIM card in Japan
  • Plug and play, no registration required, free activation
  • 3 in 1 Nano, Micro, Regular SIM card
  • Universal for all 4G/3G phones
  • After 5GB high-speed data, speed limited to 256kbps
  • Customer support available within 24 hours
  • Specifications

  • Dimension: 0.47Lx0.31Wx0.10H
  • Pros


  • Signal issues reported
  • Difficulties in reaching customer service

    The Japan Data ONLY SIM Card provides tourists, business people, and frequent travelers with 7 days of unlimited internet data in Japan. While the card offers convenient plug and play usage without any registration, it falls short in terms of signal reliability and customer service accessibility. The SIM card is compatible with all 4G/3G phones and provides fast data speeds up to 5GB, after which the speed is limited to 256kbps. However, given the reported signal issues and challenges in contacting customer service, it may be wise to explore alternative options for reliable data connectivity during your stay in Japan.


    The Nippon SIM for Japan is an excellent choice for mid-term visitors, locals returning to Japan, or frequent business travelers who require a reliable and long-lasting data connection. With ample 15GB of LTE data, heavy users can enjoy tethering with their PC/notebooks for work. The SIM card operates on Japan's largest carrier, docomo Network, providing broader and stable connections, even in rural areas. The product package includes a Genuine docomo SIM card, a manual in 5 languages, a SIM PIN, and a small plastic bag to store your local SIM. It offers peace of mind with friendly local Japan English support and simple installation. No registration, credit card, or activation is required. Just plug the SIM into your device, set up APN, and start using it right away. Please note that voice call and SMS functionalities are not available. Overall, the Nippon SIM for Japan is a reliable solution for staying connected during your visit to Japan.

    Key Features

  • Ample 15GB LTE data, 90days use with docomo network
  • Product package includes a Genuine docomo SIM card, 5 languages manual, SIM PIN, and a small plastic bag
  • Support SIM Free devices including smartphones, Tablets, LTE enabled PC, Mi Fi
  • Peace of mind friendly local Japan English supports and simple installation
  • Last day to start using: 2023/6/30
  • Specifications

  • Color: 90days 15GB
  • Pros

  • Ample 15GB LTE data for heavy users
  • Long 90days validity for mid-term visitors or frequent travelers
  • Stable connections with Japan's largest carrier docomo Network
  • No activation or contract required
  • Cons

  • Data speeds may not be very fast
  • No voice call or SMS functionality

    The Nippon SIM for Japan offers a convenient and affordable data solution for mid-term visitors, locals, and frequent travelers. With ample 15GB of LTE data and a long 90-day validity, heavy users can enjoy uninterrupted internet access without the need to purchase new SIM cards frequently. The SIM card operates on Japan’s largest carrier, docomo Network, ensuring broader coverage and stable connections even in remote areas. The product package includes everything you need for a hassle-free experience, and the friendly local Japan English support provides peace of mind. Despite its limitations of no voice call or SMS functionality, the Nippon SIM for Japan is a reliable and cost-effective choice for staying connected while in Japan.


    The LBDCIOT Japan Data Only SIM Card is a convenient solution for tourists, business people, and frequent travelers who require unlimited internet data during their stay in Japan. With a plug and play feature, no registration is required, and the card offers free activation. It is compatible with all 4G/3G phones, making it a universal option. The SIM card provides unlimited data for 5 days, with a daily limit of 1GB of high-speed 4G LTE data, which then downgrades to 128kbps. The LBDCIOT SIM card supports hotspot tethering and offers coverage across the Japanese area. Please note that this data card does not support voice or SMS, providing internet access only.

    Key Features

  • 5 days unlimited data with plug and play feature
  • 3 in 1 SIM card suitable for all 4G/3G phones
  • No voice or SMS support, internet access only
  • Unlimited speed limit after high speed 4G data usage
  • Excellent customer support with quick responses
  • Specifications

  • Dimension: 3.94Lx1.97Wx0.39H
  • Pros

  • Convenient and easy to use for tourists and travelers
  • Universal compatibility with all 4G/3G phones
  • Unlimited internet data for 5 days
  • Supports hotspot tethering
  • Quick and satisfactory customer support
  • Cons

  • No voice or SMS support
  • High-speed data limit of 1GB per day

    The LBDCIOT Japan Data Only SIM Card is a reliable and convenient option for travelers visiting Japan. With unlimited internet data for 5 days and support for hotspot tethering, it meets the needs of tourists, business people, and frequent travelers. The plug and play feature with no registration required makes it incredibly easy to use. Although the lack of voice and SMS support may be a limitation for some, the card’s focus on providing internet access only ensures consistent and reliable connectivity. Additionally, the excellent customer support is a major plus, ensuring any queries or concerns are promptly addressed. Overall, this SIM card offers a great solution for staying connected during your time in Japan.


    The Japanese Data Only SIM Card provides a convenient solution for travelers visiting Japan who require a reliable and high-speed internet connection. With a 50GB data bundle and fast 4G LTE speeds, this SIM card allows users to stay connected for 31 days, starting from the first use in Japan. The SIM card is data-only, which means standard voice calls are not supported. However, messaging and calling can still be done using apps like WhatsApp. One of the major advantages of this SIM card is that it doesn't have overage charges, and even if you use up the entire bundle, the speed will throttle to 200Mbps but it will not stop working. The SIM card comes in three parts to fit any SIM size requirements, and it requires an unlocked device to work.

    Key Features

  • 31 day bundle period starts on first use in Japan
  • Fast 4G data roaming speeds
  • Your device must be unlocked
  • It is not possible to add additional data
  • Data only – No Standard Voice Calls
  • No overage charges
  • Three Part SIM to fit any sim size requirements
  • If you use the entire bundle the speed with throttle to 200Mbps but will not stop working.
  • Specifications

  • N/A
  • Pros

  • Sufficient 50GB data bundle for Japan travel
  • Fast and reliable 4G LTE speeds
  • No overage charges
  • Does not stop working even after bundle is used
  • Cons

  • Instructions can be confusing
  • May require manual network selection every 20 minutes
  • Some users experienced activation issues

    The Japanese Data Only SIM Card offers an excellent solution for travelers seeking reliable internet connectivity during their visit to Japan. With a sizable 50GB data bundle, fast 4G LTE speeds, and the ability to continue using the internet even after the bundle is used up, this SIM card provides great value for money. While some users have encountered activation issues and the instructions could be clearer, the overall performance and affordability of this SIM card make it a worthwhile option for those in need of data-only connectivity in Japan.


    Japan SIM Card Buyer's Guide

    Thinking of traveling to Japan? Don't forget to stay connected with a reliable Japan SIM card! With numerous options available, it's important to choose the right one that suits your needs. Here's a comprehensive buyer's guide to help you make an informed decision:

    Things to Consider Before Buying

    Before diving into the vast sea of Japan SIM card options, keep these factors in mind to find your perfect match:

    1. Duration of Stay: Determine how long you'll be in Japan as it affects the validity and cost of SIM cards.
    2. Data Requirements: Calculate your data needs based on your browsing habits, social media usage, and other online activities.
    3. Coverage: Ensure the SIM card offers coverage in the regions you'll be visiting, especially if you plan to explore remote areas.
    4. Talk & Text: Assess if you prioritize making calls or sending texts, as some SIM cards offer unlimited data but limited talk-time.
    5. Triple-cut SIM: Opt for a SIM card with a triple-cut design, compatible with regular, micro, and nano SIM sizes, allowing hassle-free usage across different devices.

    Types of Japan SIM Cards

    When it comes to Japan SIM cards, you have several options to choose from. Each has its own advantages and limitations:

    • Prepaid SIM Cards: Pay-as-you-go SIMs, typically available for short-term usage with data and call/text balance.
    • Data-Only SIM Cards: Geared toward those who predominantly require data and don't necessarily need talk or text functionality.
    • Unlimited SIM Cards: Best suited for heavy data users, these cards offer unlimited data, calls, and texts for a fixed period.
    • eSIM: A digital SIM card that can be activated remotely, ideal for travelers hesitant to change physical SIM cards.
    • Pocket Wi-Fi: Instead of a SIM card, you can rent pocket Wi-Fi devices that multiple devices can connect to simultaneously.

    Where to Buy Japan SIM Cards

    When you're ready to grab a Japan SIM card, explore these avenues for a seamless buying experience:

    • Online Retailers: Popular e-commerce platforms offer a wide range of options, allowing you to compare prices and specifications before purchasing.
    • Mobile Providers: Major mobile company stores in Japan provide SIM cards tailored to tourists' needs.
    • Airports & Vending Machines: Conveniently find SIM cards at international airport kiosks or vending machines upon arrival.
    • Convenience Stores: Some convenience stores carry SIM cards, making it easy to pick one up while on the go.

    Recommended SIM Card Providers

    While we refrain from giving direct recommendations, here are a few popular Japan SIM card providers to research and consider during your search:

    • Docomo: A leading mobile network provider in Japan, offering a range of SIM card options.
    • SoftBank: Another renowned Japanese mobile network provider catering to tourists' connectivity needs.
    • B-Mobile: Known for its data-only SIM cards, B-Mobile offers various packages tailored to tourists' requirements.
    • IIJmio: Provides reliable SIM cards with various data allowances suitable for both short and long-term stays.
    • Sakura Mobile: Offers unlimited data SIM cards at affordable rates for tourists seeking seamless connectivity.


    FAQ (Frequently Asked Questions)

    Q: Can I use my existing SIM card in Japan?
    A: Some international providers offer roaming services in Japan, but it can be expensive. It’s often more cost-effective to have a local Japan SIM card.

    Q: Can I use my Japan SIM card in other countries?
    A: Japan SIM cards are typically designed for use within Japan only. If you plan to travel to multiple countries, consider an international SIM card or check if your provider offers global roaming services.

    Q: Will my phone be compatible with a Japan SIM card?
    A: Most unlocked GSM-compatible phones can work with Japan SIM cards. However, it’s crucial to check your phone’s network frequency compatibility for seamless usage.

    Q: Can I top up or extend the validity of my Japan SIM card?
    A: The availability of top-up options and extended validity varies depending on the provider and SIM card type. Check with your specific provider for details.

    Q: Can I purchase a Japan SIM card after arriving in Japan?
    A: Yes, you can find SIM cards at airports, mobile provider stores, vending machines, and even convenience stores throughout Japan.