The Best Japan eSIM and Physical SIM Card

Internet data as low as $5.91 per GB with data package
No Contracts - Pay only for the calls you make
FREE Incoming Calls in Japan and 127 Countries
Outgoing Calls only $0.55 per minute
FREE Incoming SMS Text Messages in Japan, Asia and Worldwide
Internet Data Service in Japan and 170+ Countries
Add a US, Canadian or UK Personal Extra Number

Looking for a Japan eSIM or SIM card to use for international travel in Japan or other countries in Asia? OneSimCard is an all-in-one Japan eSIM and physical SIM card solution that gives you more. With OneSimCard, our international eSIM and international SIM card will provide you with low-cost prepaid Japan cell phone service as well as international cell phone roaming in 200+ other countries. You simply pay for the calls, texts and data you use and keep the same international cell phone number no matter which country you are in.

Instead of buying a local Japan eSIM or physical SIM card at the airport that will expire quickly and can be very inconvenient to top-up, buy a OneSimCard global eSIM or international SIM card before you leave for your trip. While others search for mobile phone shops and wait in long lines to purchase local eSIMs and SIMs, you will be ready to use your international cell phone in Japan for calls, texts and data - the instant you land at the airport! What’s more, unlike competitor eSIMs or SIM cards, our eSIM and physical SIM cards are reusable for years (and trips) to come.

OneSimCard - is a perfect Japan SIM card solution for savvy travelers. Get OneSimCard today and start enjoying wireless freedom without the high cost.

Best Rates for Japan

eSIM

Data rates: from $0.02/MB, or from $0.005 with a data package

Voice rates: from $0.55/min

SMS rates: from $1.10/SMS

Physical SIM Card

Data rates: from $0.04/MB, or from $0.006 with a data package

Voice rates: from $0.55/min

SMS rates: from $0.20/SMS

OneSim VoIP App

Calling rates: from $0.02/min

All rates are shown in US dollars. Rates are per minute, SMS is per message sent.

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		Keep Your Domestic Numbers - Forward Calls To A Personal Extra Number

View numbers you can add to your Japan SIM Card in other countries

Order An International SIM Card For Japan Now

You get:

Unlimited FREE Incoming Calls in Japan
Outgoing calls only $0.55 per minute within Japan or to the U.S., Canada and most countries
Unlimited FREE Incoming SMS text messages
Mobile data service from 5c/MB. Daily/Weekly and Monthly data packages available
Includes 2 cell phone numbers: Europe & USA or Canada. Add numbers in 60+ other countries
Automatic airtime recharge or top-up online or directly through your cell phone
Reduce the cost of calling to 2 c/min by using OneSimCard VoIP app

Great Japan Data SIM for iPads, tablets, computers and MiFi hotspot devices

OneSimCard Universal

OneSimCard eSIM

Physical 3-in-1 DataMax SIM card

DataMax eSIM

Notes:

Japan SIM card compatible devices

Using this Japan eSIM and physical SIM card will require an unlocked GSM cell phone with the necessary network frequency bands listed in the table above. If your U.S. or Canadian GSM cell phone is currently locked to a carrier like AT&T, T-Mobile or Rogers, you should be able to contact them and request an unlock code. There are also third-party services, for example at your local mall, that will unlock your phone for you for a small one-time fee.

Please refer to the list of cell phones compatible with OneSimCard. Most unlocked GSM cell phones are compatible with international eSIM and physical SIM cards from OneSimCard. If you do not currently have a compatible GSM unlocked cell phone for Japan, you can rent or purchase one from us.

Note: You will need an unlocked international cell phone even if you decide to purchase a local Japan eSIM and physical SIM card from elsewhere upon arrival in Japan. In contrast to that, with Japan SIM card solution from OneSimCard you will be ready to make and receive calls before you arrive in Japan.We recommend you test your eSIM or physical SIM card before you arrive in Japan.

Japan SIM card activation

Activating your Japan eSIM or physical SIM card is as simple as clicking a button in your online account. Activation can be done from anywhere using Internet.

Installing your Japan eSIM or SIM card is the same as any other eSIM or SIM card, please refer to your cellular device's manual for details.

If you have any questions about this Japan eSIM or physical SIM card or using a cell phone in Japan, please contact our Customer Support department here.

FAQ's

Can I use an eSIM in Japan?

Yes! Our DataMax eSIM is the best eSIM for Japan

Will my iPhone work in Japan?

Yes! If you have an unlocked iPhone you can use your iPhone in . To check if your iPhone is unlocked, open Settings and go to General > About. Scroll down to the Carrier Lock (or Network Provider Lock) section. If it displays "No SIM restrictions", your iPhone is completely unlocked and ready to use with any carrier

Will my Android work in Japan?

Yes! If you have an unlocked Android you can use your Android in . To check if your Android is unlocked, there are a couple of options:

Check with your carrier, or the company where you purchased the Android
Go to Settings>About phone. Then copy the IMEI 1 number (a long click will copy it). Then navigate to an IMEI checker like https://imeicheck.com/imei-check and paste your IMEI to check the lock status

Is WiFi common in Japan?

Like many countries, you will find that WiFi is usually available in hotels and cafes and internet cafes. WiFi is much less available in rural areas

What mobile networks operate in Japan?

NTT Docomo - Expedition SIM Card, Universal SIM Card, eSIM World

SOFTBANK MOBILE CORP - Expedition SIM Card

SoftBank Mobile - Universal SIM Card

NTT DOCOMO - Physical 3-in-1 DataMax SIM card, DataMax eSIM

KDDI Corporation - Physical 3-in-1 DataMax SIM card, DataMax eSIM

Can I use WhatsApp in Japan?

Yes! WhatsApp and any other previously installed messaging or VoIP app will work in . We would also suggest using our OneSim VoIP app for calling and texting. OneSim VoIP differs from other VoIP and messaging apps because it allows you to call any number (mobile or landlines) whether the person you are communicating with has the app or not.

Should I buy a SIM card before arriving in Japan?

Yes, we always recommend that you purchase and install the eSIM or physical SIM card before your trip. This step will ensure that you aren't scrambling to figure things out after you land. Having the eSIM or physical SIM already installed, activated, and tests means, when you land in Japan you will be able to use the eSIM or physical SIM as soon as you arrive.

Do I need to unlock my phone?

Yes, you want to make sure your device is unlocked before you leave for your trip.

How much data do I need for a trip to Japan?

It depends on how you will be using your phone. We have a great resource to help you understand how much data you consume using your device for particular purposes:

Activity	Approximate Data Usage
Web Browsing & Email	~60 MB per hour
VoIP (Voice over IP) like OneSIM VoIP	~30-90MB per hour of voice
Music Streaming	~100 to 150 MB per hour
Social Media (Text & Images)	~120 MB per hour
Social Media (Video, Reels & Stories)	Up to 1 to 2 GB per hour
Video Streaming (HD 1080p)	~1.5 to 2 GB per hour

Note: Actual data usage varies by app, video quality, autoplay settings, and content type. Video-heavy activities such as streaming, reels, and short-form video consume significantly more data than browsing, email, or music streaming.

If you have any questions about this Japan eSIM or physical SIM card or using your mobile device in Japan, please contact our Customer Support department here.

*Free International phone numbers available on Universal, eSIM World, Expedition and eSIM Asiania only. Voice and SMS available on the DataMax eSIM and physical SIM with OneSim VoIP and compatible Personal Extra Number.

Japan Quick Facts:

Japan is an island nation in East Asia renowned for its blend of ancient traditions and cutting-edge technology. Known for its vibrant cities, historic temples, beautiful landscapes, world-class cuisine, and unique culture, Japan consists of four main islands and thousands of smaller islands stretching across the Pacific Ocean.

Japan covers approximately 377,975 square kilometers and is located east of the Korean Peninsula, China, and Russia. The country is surrounded by the Pacific Ocean, the Sea of Japan, the East China Sea, and the Sea of Okhotsk.

The capital and largest city is Tokyo, one of the world's largest metropolitan areas and a global center for finance, technology, fashion, and culture.

Japan has a population of approximately 123 million people. Japanese is the official language, and the national currency is the Japanese Yen (JPY).

Japan has one of the world's oldest continuous civilizations, with a history spanning thousands of years. The country is famous for preserving its cultural traditions while embracing innovation and modern technology.

One of Japan's most iconic landmarks is Mount Fuji, the country's highest mountain and a symbol of Japan recognized worldwide. The snow-capped volcano attracts climbers, photographers, and visitors throughout the year.

Another must-see destination is Kyoto, home to thousands of temples, shrines, traditional gardens, and historic districts. Kyoto served as Japan's capital for over 1,000 years and remains the cultural heart of the country.

Visitors also flock to Tokyo Skytree, Senso-ji, and the famous pedestrian crossing at Shibuya Crossing.

Japan is renowned for its efficient transportation network, including the Shinkansen, commonly known as the bullet train, which connects major cities at speeds exceeding 300 km/h.

Nature lovers can explore national parks, hot spring resorts (onsen), bamboo forests, alpine regions, and beautiful coastlines. Seasonal attractions such as cherry blossoms in spring and autumn foliage draw millions of visitors annually.

Japan is also a global leader in technology, automotive manufacturing, robotics, electronics, and innovation. Companies such as [Toyota](https://www.toyota.com?utm_source=chatgpt.com), [Sony](https://www.sony.com?utm_source=chatgpt.com), and [Nintendo](https://www.nintendo.com?utm_source=chatgpt.com) have become internationally recognized brands.

Japanese cuisine is considered among the finest in the world. Popular dishes include sushi, ramen, tempura, yakitori, udon, soba, tonkatsu, and countless regional specialties. Japan has more Michelin-starred restaurants than any other country.

Baseball is one of Japan's most popular sports, alongside football, sumo wrestling, tennis, and golf.

How is Mobile Coverage in Japan:

Mobile coverage in Japan is excellent throughout Tokyo, Osaka, Kyoto, Nagoya, Fukuoka, Sapporo, Hiroshima, Okinawa, and most towns and rural areas. Operators such as NTT Docomo, SoftBank, au (KDDI), and Rakuten Mobile provide extensive 4G and 5G coverage across the country. Coverage is generally reliable on trains, subways, highways, mountain tourist destinations, and even many remote regions. Travelers rarely encounter significant coverage issues except in a few isolated mountain valleys or remote wilderness areas. Using a multi-network international eSIM or SIM card provides excellent connectivity throughout Japan.

What to Expect When Landing in Japan

If you're arriving in Japan for tourism, business, or visiting family, you will most likely arrive through Narita International Airport, Haneda Airport, Kansai International Airport (Osaka), Chubu Centrair International Airport (Nagoya), or Fukuoka Airport.

Immigration and Entry

Upon arrival, travelers proceed through immigration where officials review passports and supporting travel documentation. Japan has streamlined entry procedures for many nationalities.

Keep the following readily accessible:

Passport with sufficient validity

Visa or approved travel authorization if applicable

Return or onward travel information

Hotel reservation or local address

Customs declaration information

Travel insurance documentation if requested

Baggage Claim and Customs

After immigration, collect your luggage and proceed through customs screening. Customs procedures are generally efficient, organized, and traveler-friendly.

Mobile Connectivity

Local SIM cards, eSIMs, and pocket Wi-Fi rentals are widely available at airports, electronics stores, and mobile providers throughout Japan.

Travelers who install an international eSIM or activate an international SIM card before departure can typically connect immediately after landing, avoiding the need to purchase a local SIM or rent a pocket Wi-Fi device.

Transportation from the Airport

Transportation options commonly include:

Airport trains

Shinkansen connections

Metro and subway systems

Airport limousine buses

Official taxis

Ride-hailing services

Rental cars

Hotel transfers

It is recommended to:

Purchase or preload transportation cards where available

Follow airport signage for rail connections

Reserve rail passes in advance if planning extensive travel

Arrange transportation before late-night arrivals

Japan's public transportation system is among the most efficient in the world.

Currency and Payments

The local currency is the Japanese Yen (JPY).

Credit and debit cards are widely accepted at:

Hotels

Restaurants

Department stores

Convenience stores

Tourist attractions

Transportation systems

Cash remains useful for:

Smaller restaurants

Local markets

Rural businesses

Traditional inns

Independent shops

ATMs are widely available, especially at convenience stores such as 7-Eleven.

Internet and Wi-Fi

Wi-Fi is available in most hotels, airports, train stations, restaurants, cafés, and many public locations. Japan has some of the world's most advanced telecommunications infrastructure, providing fast and reliable internet service throughout the country. Mobile data performance is excellent in both urban and rural regions.

Best Preparation

Activate your eSIM or SIM card before departure

Arriving with mobile connectivity already active can make your first hours in Japan much smoother, especially if you need maps, train schedules, hotel directions, transportation bookings, translation services, restaurant reservations, business communications, or access to travel information immediately after landing.