Find the Perfect eSIM for Your Japan Trip
We personally test, compare, and select the best data plans for tourists.
Last updated: July 2025
Top eSIM Recommendations for Japan in 2025
We've tested the most popular eSIM brands for travelers. Here are our winners.
| Product | Best For | Popular Plan | Price | Get It |
|---|---|---|---|---|
| Airalo Overall BestMoshi Moshi Series | Most Travelers | 10GB / 30 Days | $9 | Visit Airalo |
Ubigi Japan eSIM Plans | Best Value | 10GB / 30 Days | $12 | Visit Ubigi |
Holafly Unlimited Data Plans | Heavy Data Users | Unlimited / 7 Days | $27 | Visit Holafly |
Note: Prices may change. Please refer to the official websites. This page contains affiliate links. See our Affiliate Disclosure for details.
Our Review Principles
Our commitment is to provide you with honest, objective, and reliable advice.
On-the-Ground Testing
Our team uses every product in popular travel destinations across Japan to test real-world speed and signal stability.
100% Objective & Independent
Rankings are based solely on data and user experience. We earn income via affiliate links to support our site, but this never affects our recommendations or your price.
Constantly Updated
Markets and products change. We review and update all information monthly to ensure you get the most current and accurate advice.
Does Your Phone Support eSIM?
Before you buy, please confirm that your phone is eSIM-compatible.
Important Note
iPhones and Android phones purchased in Mainland China typically do not support eSIM. Please check in your phone's "Settings" > "Cellular" for an "Add eSIM" or "Add Cellular Plan" option.
Frequently Asked Questions (FAQ)
What is an eSIM and how is it different from a physical SIM?
An eSIM is an "embedded SIM," a digital chip built into your phone that functions identically to a physical SIM card. The main difference is that you don't need to insert a physical card; you can install and activate a data plan by scanning a QR code or through an app, making it very convenient.
Can I still receive calls on my original number after activating an eSIM?
Yes, absolutely! This is a major advantage of eSIMs. Your phone can keep both your original SIM (for calls and texts) and the Japan eSIM (for data) active simultaneously. You can designate the eSIM for data usage in your settings while never missing calls or texts from your home number.
What happens if I run out of data?
Most eSIM providers (like Airalo and Ubigi) allow you to easily top up or purchase a new data plan through their app. The entire process takes just a few minutes, with no need to change the eSIM.
When should I install the eSIM?
We highly recommend installing the eSIM before you depart, in a location with stable Wi-Fi (like at home or the airport). However, wait to activate it until you have arrived in Japan. This ensures you can connect to the network immediately upon landing.