Best SIM Cards to visit Japan in 2025

Staying connected is a priority for most travelers in Japan, where public free Wi-Fi is not as widespread as in some other countries. In 2024, the rise in tourism has brought an increase in options for SIM cards, eSIMs, and portable Wi-Fi devices, making it easier to stay online while exploring Japan. However, with so many SIM card and eSIM options for tourists, it can be challenging to choose the best one for your trip. This guide will help you navigate the top SIM card and eSIM solutions to ensure reliable internet access, whether you’re using data for navigation, staying in touch, or exploring local attractions.

What to choose between SIM and eSIM?

SIM and eSIM serve the same purpose: one is physically inserted into your phone, while the other is virtual. The downside of eSIM is that, although most modern phones are compatible, some older devices are not. Therefore, it’s important to double-check your phone’s compatibility before purchasing one. What is certain, though, is that eSIM is the future, and traditional SIM cards are becoming less common. Once you've used an eSIM, it’s hard to go back to the traditional SIM card.

Pros and Cons of eSIM in Japan

Should I choose an eSIM instead of a regular SIM?

• You can purchase it from abroad, receive it, and configure it in less than five minutes, so there’s no need to struggle with SIM cards upon arriving at the airport.

• Since it’s not a physical item, there’s no risk of damaging or losing it.

  • Not every phone and device supports the technology.

  Can my phone support eSIM in Japan?

  It’s crucial to verify this before you spend your money! Read our article List of eSIM-Compatible Phones to see if your particular device is compatible.

  While most smartphones manufactured in recent years come with eSIM functionality, not all of them are unlocked. If you bought your phone outright, it’s likely unlocked. However, if your phone was obtained through a contract with a network provider, it’s probably locked to that provider. 
  
  Checking if your phone is unlocked is a quick and straightforward process. If you find that your phone is locked, reach out to your service provider to inquire about unlocking it before purchasing an eSIM. Alternatively, if you’re traveling with family or a small group, consider renting a pocket Wi-Fi device to share among yourselves.

  The Different SIM Plan Options

  Sakura Mobile

  Now that you know what type of SIM you’re looking for based on your needs and how long you'll be in Japan, you’ll have several choices: 
  
  Sakura Mobile: In addition to offering English support, Sakura Mobile provides different plans depending on your stay in Japan. Notably, every plan includes unlimited data.

  For more details about the company, check out our article that highlights this well-known, foreigner-friendly business: Sakura Mobile.

  Duration	Price	Data
  5 days	¥3,850	Unlimited data
  8 days	¥4,950	Unlimited data
  12 days	¥6,270	Unlimited data
  15 days	¥7,150	Unlimited data
  21 days	¥8,415	Unlimited data
  30 days	¥9,900	Unlimited data

  Check Sakura mobile's website

  Ubigi

  Ubigi is a global eSIM provider, offering eSIMs for more than 200 destinations worldwide. While still a relatively new player in the Japanese eSIM market, they offer a range of plans to suit various needs. Options range from budget-friendly, single-day 500MB plans priced at ¥360 to more comprehensive, month-long plans with unlimited data for ¥9,000.

  Duration	Price	Data
  1 day	¥360	500 MB
  30 days	¥570	1 GB
  30 days	¥1,200	3 GB
  7 days	¥2,000	10 GB
  7 days	¥4,000	Unlimited
  30 days	¥9,000	Unlimited

  Check Ubigi's sims plans in Japan

  Do I need an unlimited data SIM card in Japan?

  If you prefer a hassle-free option, then the unlimited data plan is perfect for you. However, if you mainly plan to use Google Maps and Google Translate while out and rely mostly on hotel Wi-Fi for browsing the internet, then an unlimited plan might be excessive.

  Mobile Data Usage While Traveling The average user typically consumes around 5GB of data per week in their home country. However, at home, you're likely connected to Wi-Fi most of the day. When traveling, the situation changes—Wi-Fi access may be more limited, so you'll depend on mobile data for essential tasks like navigation, translation, and searching for activities or directions.
  
  If you're mainly using data for maps and messaging while out and about, 500MB to 1GB per day may suffice. But if you're spending a lot of time online during a long Shinkansen ride, using data for work, tethering, or staying active on social media, you might need to consider a larger data plan.
  
  To avoid exceeding your daily data limit, download offline maps and try to save more intensive data tasks for when you're connected to Wi-Fi. You could also set a data usage alert on your phone or explore plans that offer data top-ups for extra peace of mind.

  Which SIM card offers the best coverage in rural Japan?

  When it comes to network coverage in Japan, NTT Docomo is often regarded as having the most extensive infrastructure across the country. However, there isn't a definitive winner when comparing overall quality among the three main providers: Docomo, AU, and Softbank. Recent studies have ranked Docomo highest in terms of general availability, while AU and Softbank lead the race in 5G coverage. Though Docomo is said to have the largest network, its large user base means it may experience slower speeds in crowded urban areas but typically performs better in rural regions.

  Choosing the Right SIM or eSIM for Your Trip to Japan in 2024 summary

  Whether you opt for a regular SIM card or the convenience of an eSIM, staying connected in Japan is essential for navigating, staying in touch, and making the most of your trip. The variety of SIM card plans and eSIM options available in 2024 ensures that travelers can find a solution tailored to their needs—whether it’s for unlimited data, short-term use, or cost-effective options. For those looking for a quick and easy setup, eSIMs offer flexibility and eliminate the need for a physical card. However, if you’re looking for more traditional solutions, prepaid SIM cards remain widely available and reliable. Be sure to choose the option that best suits your travel habits, data needs, and budget to enjoy seamless connectivity throughout your trip to Japan.

📊 Japan SIM & eSIM Plan Comparison (2025)

   To help you make the best choice for your trip to Japan, we've compiled a detailed comparison table that covers all the major SIM and eSIM providers available in 2025. Whether you're looking for a short-term data plan, unlimited usage, eSIM convenience, or physical SIM delivery, this table breaks down everything—from prices and data limits to duration and special features. It's your one-stop guide to finding the plan that best matches your travel style, connectivity needs, and budget.
 

By Alan

Project Manager

As a former Telecom Engineer who worked for one of the main carriers in France, I moved to Japan six years ago and have been living in Osaka ever since. Since 2021, I have been working at Selectra, and I recently started leading our English content. Our ambition is to become the primary energy guidance service for expats and newcomers in Japan and to expand our reach by the end of the year.