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Traveling in Japan just got easier with super convenient mobile internet – easily purchase mobile data plans on the go

Published: 2026-09-25 👁 101 views
Last updated 2026-09-25 — Taiwanese travelers visiting Japan now have an even more convenient way to stay connected. Japan’s So-net Corporation will launch a new LTE prepaid SIM card “Prepaid LTE S...

Text / So-net Corporation 'MOOK Scenic Spots Family Travel Life Network Editorial Department
 
When traveling, some people rely on online maps to find shops, while others love uploading photos to share scenic views in real time. As a result, staying connected abroad—ensuring smooth internet access to make the trip more comfortable and convenient—is a common concern for many. Now, Taiwanese travelers visiting Japan have a more convenient mobile internet solution. Japan’s So-net Corporation has introduced an LTE prepaid SIM card“Prepaid LTE SIM”that utilizes NTT DoCoMo’s high-speed network, offering nationwide mobile internet coverage across urban and rural areas of Japan. The most affordable option is the 30-day, 100MB plan starting at just 3,000 Japanese yen (approx. NT$80), which means enjoying seamless connectivity for less than NT$30 per day on average. In addition to meeting travelers’ internet needs, it also provides a more convenient and faster mobile internet service for Taiwanese visitors making short trips to Japan.
 

Starting April 22, So-net begins selling the “Prepaid LTE SIM” via vending machines at Kansai International Airport. (Image provided by So-net)

Use your own communication device
 
In 2013, the number of Taiwanese travelers visiting Japan surpassed 2.3 million. For short-term tourists, convenient internet access has become an urgent need. So-net’s prepaid SIM card service, available at airports, allows foreign visitors to easily purchase and continue using their own familiar devices for internet access, offering diverse connectivity options for travelers in Japan. SIM cards can be bought right at the airport upon arrival, ready for immediate use.
 
The “Prepaid LTE SIM” offers two plans, allowing consumers to choose between 100MB or 500MB options based on their needs. With three different SIM card sizes available, a total of six product variations are now on sale. The 30-day, 100MB plan starts at 3,000 Japanese yen (approx. NT$80), while the 60-day, 500MB plan is priced at 5,000 Japanese yen (approx. NT$475). That’s less than NT$30 per day on average for convenient internet access, and additional data can be purchased through top-up services once the allotted data is used up.

So-net “Prepaid LTE SIM” package design illustration. (Image provided by So-net)

Purchase easily via vending machine
 
The “Prepaid LTE SIM” comes in a prepaid card format. After purchasing the product, users only need to complete a simple online registration process to activate the SIM. Whether you’re a budget-conscious traveler or someone who needs internet access as soon as they land in Japan, this option is highly convenient—perfect for tourists or business travelers making short visits. In addition, the “Prepaid LTE SIM” offers multilingual support, including Japanese and English phone services, and the official website provides content in Japanese, English, and Chinese for easy reference.
Starting now, the “Prepaid LTE SIM” is available for purchase at Kansai International Airport and Narita International Airport in Japan. At Kansai International Airport, it is sold directly through vending machines—a first in Japan. The major advantage is that travelers don’t need to worry about flight arrival times; they can purchase the SIM anytime via the vending machine, regardless of when they arrive. At Narita International Airport, it is available at the Telecom Square Mobile Center in both Terminal 1 and Terminal 2.

LTE-capable network with 6 product options based on data allowance and SIM card size
 
Data Allowance
Validity Period
Price
SIM Card Size
Maximum
Speed
100M
Plan
100MB
30 days
3,000 yen (tax included)
2,778 yen (tax excluded)
Standard SIM
Download: 150Mbps
/ Upload: 50Mbps
micro SIM
nano SIM
500M
Plan
500MB
60 days
5,000 yen (tax included)
4,630 Q? (tax excluded)
Standard SIM
micro SIM
nano SIM
※ Fees may vary by store.
 
Top-up Plans
 
Data
Validity Period
Fee
Max Speed
200M Top-up
200MB
30 days
1,500 Q? (incl. tax)
Download: 150Mbps
/ Upload: 50Mbps
500M Top-up
500MB
30 days
2,000 Q? (incl. tax)
1G Top-up
1GB
60 days
2,838 Q? (incl. tax)
 

※ A credit card must be registered to top up.
※ Users can check data usage and top-up details on the website.
※ For the process from purchasing a SIM to activation, please refer to the So-net official website.
 

●  Essential Info for Internet Access While Traveling in Japan »»

www.mook.com.tw/article.php?op=articleinfo&articleid=9223
 

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