How to Make Calls in Japan as a Tourist (2025–2026 Guide)

Staying connected while traveling in Japan is easier than it used to be—but it can still be confusing for visitors.

Japan has one of the most advanced telecommunications systems in the world, yet tourists often run into small but frustrating issues when trying to make phone calls, receive SMS codes, or register for local apps.

This guide explains how calling works in Japan and the best options for travelers in 2025 and 2026.

Understanding Japan's Mobile Networks

Japan's mobile infrastructure is extremely reliable and widely available.

The country is served by three major carriers:

If you plan to travel outside major cities like Tokyo, Kyoto, or Osaka, Docomo usually offers the most reliable coverage.

Japan is also moving toward fully digital networks, replacing older phone systems with modern IP-based infrastructure. This means mobile data and internet calling services continue to improve every year.

The Challenge of Getting a Local Japanese Phone Number

One of the biggest surprises for tourists is that getting a Japanese phone number is not always easy.

Japan has strict regulations designed to prevent phone fraud. Because of this, SIM cards that include voice calls and SMS require identity verification.

For tourists, this creates two options:

Data-only SIM or eSIM

Most travelers choose a data-only option because it's quick and easy.

These provide internet access but no phone number.

Typical uses:

• Maps and navigation – essential for getting around cities
• Messaging apps – WhatsApp, LINE, and other communication tools
• Ride-hailing apps – Uber and GO Taxi for transportation
• Social media – staying connected with friends and family

Voice-enabled SIM

If you need a Japanese phone number (070, 080, or 090), you must complete identity verification with your passport.

Some companies like Mobal specialize in providing voice SIM cards for tourists.

A local number can be helpful for:

• Restaurant reservations – many high-end restaurants require a Japanese number
• Receiving SMS verification codes – for apps like GO Taxi and local services
• Local services and apps – accessing Japan-specific platforms and bookings

Most modern smartphones support eSIM, which allows travelers to download a mobile plan without visiting a store. If you're new to eSIM technology, check out our complete guide to how eSIMs work for travelers.

International Roaming

Roaming is the easiest option because it allows you to keep your home phone number active.

However, it can be expensive.

Typical roaming prices from US carriers:

For a two-week trip, roaming can cost $80–$160 or more.

How to Dial Japanese Phone Numbers

Dialing numbers in Japan works slightly differently from many other countries.

Domestic calls inside Japan

Japanese numbers include a leading 0.

Example: 03-1234-5678

Calling Japan from abroad

Remove the leading zero and add Japan's country code +81.

Example: +81-3-1234-5678

Calling another country from Japan

Use the international prefix 010.

Example: 010 + country code + number

Taxi Apps and Phone Verification

Many services in Japan require phone verification.

The most popular taxi app is GO Taxi, which sends an SMS code during registration.

Foreign numbers are now supported, but travelers sometimes experience issues receiving verification texts.

Because of this, many tourists simply use Uber, which works with existing accounts and connects to local taxis.

Making Restaurant Reservations

High-end restaurants in Japan often prefer reservations by phone.

Without a local number, tourists typically rely on one of these options:

Hotel concierge

Hotel staff can call restaurants on your behalf and confirm reservations.

Online booking platforms

Websites such as:

• TableCheck – popular platform for restaurant bookings across Japan
• Pocket Concierge – English-friendly service for high-end dining
• Omakase – specialized platform for traditional Japanese restaurants

allow reservations using email and credit cards instead of phone calls.

Public Payphones Still Exist

Japan still maintains a large number of public payphones, especially in major stations and airports.

These phones can make domestic and international calls and are often used as emergency backups.

Two emergency numbers are important to know:

Emergency calls from public phones are free.

Internet Calling Apps

If you're using a data-only SIM or eSIM, you can still make calls using internet services.

Popular options include:

• Viber Out – reliable landline calling
• Skype – still works for international calls
• Google Voice – useful for US travelers
• LINE – Japan's most popular messaging app

Many businesses in Japan also use LINE accounts for communication.

Connectivity Options for Travelers

Here's a quick comparison of the main ways to stay connected in Japan.

For most travelers, a data eSIM plus internet calling apps offers the best balance of price and convenience.

Final Tips for Travelers

To avoid connectivity issues during your trip:

• Install your eSIM before departure – activate and test it while still at home
• Check phone compatibility – ensure your device supports Japanese LTE/5G bands
• Save contacts properly – use the +81 international format for all Japanese numbers
• Download essential apps early – get GO Taxi, Uber, and LINE before you land
• Keep backup options ready – install internet calling apps like Skype or Viber Out

With a little preparation, staying connected in Japan is simple—and you'll be able to make calls, navigate cities, and manage reservations without stress.

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