iPhone eSIM Japan: Best Prepaid Plans for Tourists

Many travelers planning a trip to Japan and using an iPhone may be looking for an eSIM that works in Japan. Without a functioning smartphone during your trip, you may face inconveniences such as difficulty using navigation maps and translation apps.
This article will help answer common questions like:
What is an eSIM?
What are the benefits of using an eSIM in Japan?
There are so many options—how do I choose the right one?
To ensure smooth communication in Japan, we will introduce some recommended eSIM options.

What is an eSIM?

An eSIM (Embedded SIM) is a built-in SIM card. Unlike traditional physical SIM cards, an eSIM allows mobile communication by writing SIM information onto a chip embedded inside the iPhone.

Why Choose an eSIM?

Instant Internet Access Upon Arrival

You don’t need to search for a SIM card at the airport. With an eSIM, you can connect to the internet immediately after landing and start your journey smoothly.

Avoid Expensive Roaming Fees

International roaming with your carrier can be extremely costly. With an eSIM, you can use an affordable local data plan and significantly cut communication costs.

Easy Online Setup

If you choose an eSIM service that offers English-language support, you can complete the setup in advance without language barriers. iPhone settings are also simple, so even if you don't understand Japanese, you’ll have no problem.

How to Use a Japanese eSIM on an iPhone

To use an eSIM, your iPhone must be eSIM-compatible. As of February 2025, the following iPhone models support eSIM:

• iPhone XS, iPhone XS Max, iPhone XR
• iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max
• iPhone SE (2nd & 3rd Gen)
• iPhone 12 series
• iPhone 13 series
• iPhone 14 series
• iPhone 15 series
• iPhone 16 series

Recent iPhone models support dual SIM functionality with both eSIM and physical SIM, and some models are eSIM-only. You can check if your iPhone supports eSIM in just 5 seconds.

How to Quickly Check if Your Smartphone Can Use a Japanese eSIM in 5 Seconds

Three Reasons to Choose a Japanese eSIM

No Expensive Roaming Fees

International roaming services from mobile carriers can be very costly. Even with data limits and slow speeds, they may charge over $10 per day. A two-week trip could result in hundreds of dollars in roaming fees.
With an eSIM, you can easily access affordable local data plans in Japan, helping you save significantly compared to roaming fees.

Easier Than Physical SIMs or Pocket Wi-Fi

Other options include purchasing a physical SIM card at a Japanese airport or renting a Wi-Fi router, but these have drawbacks:

Physical SIM Cards

Finding a SIM card at the airport and setting it up in stores where English support is limited can be a hassle. There’s also a risk of losing the SIM card.

Pocket Wi-Fi

Requires pickup and return, and you must carry and charge the device. Unless you’re traveling in a group, carrying one alone can be inconvenient. With an eSIM, you can buy it online from your home country and set it up instantly upon arrival in Japan. No extra luggage, no risk of losing it.

eSIM vs. Pocket WiFi : Which is better for traveling in Japan?

Recommended Prepaid eSIM Services for Travelers to Japan

For trips shorter than 30 days, prepaid eSIMs are ideal. These are designed for short stays and offer various data-only plans.

Prepaid eSIM Plan Comparison

How to Choose the Right eSIM

Data Capacity

If you primarily use maps, social media, and translation apps, less than 1GB per day is enough.
If you frequently stream videos, you may need a larger plan. However, for regular smartphone use, 1GB per day should be sufficient. How Much Data Do You Need for a Japan Trip? A Complete Guide to eSIM Solutions

Validity Period

Choose a plan that matches your length of stay in Japan.

Price

Compare costs and pick a plan that fits your budget. Local Japanese plans tend to be cheaper and offer stable connections.

Ease of Use

Select a service with simple setup and English guides for peace of mind. Most Japanese eSIM providers offer similar setups, so no additional apps are needed—just a straightforward process.

English Support

Having English customer support can be helpful, but ideally, you won’t need it at all!

Things to Check Before Using an eSIM in Japan

Check if Your iPhone is Compatible

If your iPhone supports eSIM, you should have no issues using it in Japan.
How to Quickly Check if Your Smartphone Can Use a Japanese eSIM in 5 Seconds

Set Up the APN

Some eSIM services no longer require APN settings. However, if you already have an APN configured for your home carrier, you may need to adjust it in Japan.
Additionally, APN settings are required for tethering. Setting it up in advance will help you avoid unnecessary troubles.