Will your cell phone work in Japan? Everything you need to know

Will your phone work in Japan?

Yes, if your mobile phone supports the network frequencies used in Japan, you should be able to stay connected throughout most of the country. Just a heads up, though — some remote and isolated areas might have weaker cell coverage. Also, you might need to purchase additional services to stay online.

If you’re wondering, “Will my Verizon phone work in Japan?” or if your T-Mobile phone will, set your worries aside. Both Verizon and T-Mobile phones generally work in Japan without issues. Whether your cell phone works in Japan depends more on its compatibility with local networks than your mobile carrier.

Instead, it depends on the phone’s compatibility with Japanese network frequencies, whether it is unlocked, and whether you have set up international data roaming or purchased a local SIM or eSIM.

How to check your phone’s compatibility

Phone service in Japan is generally very reliable, so most cell phones work well there. However, some older phones may experience issues. For example, 2G-only mobile phones won’t work because Japan doesn’t have 2G networks. 

So to make sure your mobile phone works in Japan, you need to check its compatibility and understand the key factors that determine whether your phone will work there.

Understanding the phone network in Japan

Japan has a super advanced phone network, but it might not work well with phones from other regions. Here’s a quick breakdown:

• Network bands. Japan uses 3G, 4G LTE, and 5G networks. It stopped using 2G networks in 2011, so 2G-only phones won't work here.

• Carriers. The leading mobile carriers in Japan are NTT Docomo, KDDI au, SoftBank, and Rakuten Mobile. Smaller providers (MVNOs) rent network access from the big carriers and often offer cheaper plans.

Understanding frequency bands

Frequency bands are specific ranges of electromagnetic frequencies used for transmitting data, including mobile signals for voice calls, texts, and the internet. Japan has specific frequency bands on which its mobile networks operate, which means your phone must be compatible with these bands to work in the country.

Think of frequency bands like different radio stations for your phone. Each "station" or band lets your phone tune in to a specific signal to make phone calls, send texts, and use the internet. Mobile networks operate on different bands, just like your favorite music station plays on a specific frequency.

In Japan, your phone needs to tune into the right "station" to stay connected. So make sure your phone can catch those signals, and you'll be all set.

Checking your phone’s compatibility online

In most cases, your cell phone will work perfectly fine in Japan. Popular models like iPhones and newer Android phones have a great track record of staying connected abroad. 

However, double-check that your specific model is compatible with Japanese networks online to ensure smooth sailing. You can do this on Kimovil. Here’s how:

1. Go to the Kimovil frequency checker for Japan.

2. Type your phone's model into the search bar.

3. Select the correct model from the drop-down menu.

If you scroll further down the page, you’ll see your selected device's compatibility with Japan's leading network operators.

How to use your phone in Japan

You have a few options for how to use your phone in Japan and make the most of it:

• Get a local prepaid SIM card

• Use an international roaming plan

• Rent a pocket Wi-Fi

• Use free Wi-Fi

• Get an eSIM

Get a local prepaid SIM card

You can snag a prepaid SIM card at the airport, from convenience stores like 7-Eleven and Lawson, or from big electronics shops like Yodobashi Camera and Bic Camera. If you prefer, you can order a prepaid SIM card online from Amazon Japan before you even arrive. 

Top providers like b-mobile, IIJmio, and NTT Docomo offer a variety of data plans to fit your needs. Pick a data plan, pop the prepaid SIM into your phone, and activate it if needed. Don’t forget your passport for the purchase.

Use an international roaming plan

An international roaming plan is another hassle-free option for using your phone in Japan. Check with your home carrier about its international roaming plans. These plans can be convenient because you don’t have to switch SIM cards.

However, keep in mind they might be pricier than getting a local Japanese SIM card. Roaming can save you some hassle, but a local SIM might be a better option to explore Japan without worrying about high costs.

Rent a pocket Wi-Fi

Renting a pocket Wi-Fi in Japan is a great way to stay connected. This small, portable device provides internet access for multiple devices, such as your phone, tablet, and laptop. You can pick one up at major airports such as Narita, Haneda, and Kansai or order it online in advance to have it delivered to your hotel. Look for services from Japan Wireless or Ninja WiFi — both offer easy booking options.

Pocket Wi-Fi offers reliable internet anywhere, connects multiple devices, and is easy to use — just turn it on and connect. Daily rental rates range from ¥500 to ¥1,000, while weekly packages cost around ¥3,000 to ¥5,000, with discounts for longer rentals.

Use free Wi-Fi 

Japan offers plenty of free Wi-Fi spots, making it easy to stay connected without spending extra bucks. You can find free Wi-Fi in airports, train stations, convenience stores like 7-Eleven and Lawson, cafes like Starbucks, and most hotels. To make things even easier, download the app called “Japan connected-free Wi-Fi.” This handy app helps you locate nearby hotspots and connect with just a few taps.

However, beware that Wi-Fi hotspots might be unsafe. Consider using a VPN to protect your personal information and ensure a secure connection. This way, you can safely check maps, stay in touch with friends, and share your travel experiences without worrying about security risks.

Get an eSIM

eSIMs (embedded SIMs) are digital SIM cards that let you activate a cellular data plan without needing a physical SIM. Similar to physical SIM cards, you can pick from postpaid and prepaid SIM cards. Most modern smartphones, like the latest iPhones and Google Pixels, support eSIM technology.

If you need just data, consider Saily, an eSIM app that offers data-only plans. If you need more than data and wish to make local calls and send messages, some of the most reliable providers in Japan are SoftBank, NTT Docomo, and AU by KDDI.

How to use an eSIM in Japan

Using an eSIM in Japan is super easy. First, make sure your phone supports eSIMs. Then choose a reliable eSIM service provider or download the Saily eSIM app if you want data-only plans. After you buy your plan, you'll usually get instructions on how to activate your new eSIM. 

Different eSIM providers use various activation methods. Typically, you’ll scan a QR code or enter an activation code in your phone’s settings. With Saily, you’ll receive an activation code. Check out this article for a detailed guide on how to install eSIM on an iPhone.

If you run into any issues, eSIM providers usually have great customer support, and you can also pop into a local telecom store in Japan for help. Also, we highly recommend you install your eSIM before you travel. This way, you'll have easy internet access right when you land.

Set up your phone for Japan

Setting up your phone for Japan is easy and won’t take much time. Complete all the prep work before hopping on the plane to make your trip smoother.

Unlock your phone

To set up your phone for Japan, first check if your iPhone is unlocked. On iPhones, go to “Settings” > “General” > “About.” If you see "No SIM restrictions" next to “Network provider lock,” your iPhone is unlocked. 

If you use an Android phone, navigate to “Settings” and check under “About phone” or “Network.” The exact wording might be different depending on what phone you have, but keep an eye out for terms like "SIM lock," "Network lock," or "Carrier restrictions." 

And if your phone is locked, don’t worry! Contact your carrier for an unlock code, use a trusted online service, or visit a professional mobile repair shop to unlock your phone. If you’re an iPhone user, here’s a detailed guide on how to unlock eSIM on an iPhone.

Adjust your phone settings

Before you go to Japan, make sure that your phone settings are optimized for international use. First, turn on international roaming. Go to “Settings” > “Cellular [or Mobile] data” > “Cellular [or Mobile] data options” and toggle on “Data roaming.” These instructions should work on both iPhone and Android devices. Data roaming allows your phone to connect to networks abroad. Just keep in mind that roaming can add extra charges, so it’s a good idea to check with your carrier about the costs. Using an eSIM can help you save on these fees.

Next, adjust your access point name (APN) settings to make sure your phone connects to the internet and can send multimedia messages. For iPhones, go to “Settings” > “Cellular” > “Cellular data network” and enter the APN details provided by your carrier or eSIM provider. For Android, go to “Settings” > “Network & internet” > “Mobile network” > “Advanced” > “Access point names” and add the APN details

Lastly, manage your data usage to avoid unexpected charges. Both iOS and Android offer features to monitor and limit data usage. Go to “Settings,” then “Cellular [or Mobile] data,” to view your data usage and set alerts or limits.

Things to consider when using your phone in Japan

Here are more tips to keep in mind when using your phone in Japan:

• Download essential apps. Use Google Maps to navigate and find public transport routes and Google Translate to break down language barriers. Stay connected with LINE, Japan's favorite messaging app. Plan your train trips with Japan Travel by NAVITIME. XE Currency is a lifesaver for managing currency conversion and expenses. Be sure to download these apps and familiarize yourself before your trip.

• Get insurance. Buy travel insurance that covers your phone. It’s a smart move if your phone gets lost, stolen, or damaged. This way, you won't have to worry about unexpected costs ruining your trip.

• Back up your data. Use cloud services like iCloud for iPhones or Google Drive for Androids. This way, your photos, contacts, and important documents stay safe and accessible. It's a simple step that can save you a lot of hassle if something goes wrong.

• Save important phone numbers. Keep your country’s embassy number handy, along with local emergency services (110 for police, 119 for fire/ambulance). Don’t forget your hotel’s contact info, too.

• Use a VPN when connecting to free Wi-Fi. VPN encrypts your internet connection and keeps your information safe from unauthorized access. It’s an easy way to improve your privacy and security while browsing in public places.

FAQ

Will my US cell phone work in Japan?

Yes, your US cell phone can work in Japan. Just make sure it’s unlocked and supports international networks. For better rates, grab a local SIM card or eSIM. Don’t forget to ask your carrier about enabling international roaming.

Will my phone charger work in Japan?

Yes, your phone charger will work in Japan if it has a compatible plug. Japan uses type A (two flat pins) and type B (two flat pins and a grounding pin) plugs. You'll need a power adapter if your charger has a different plug type, like type C (two round pins) or type G (three rectangular pins). Make sure your charger supports 100V-240V input to avoid any issues.

How can I avoid roaming charges in Japan?

Grab a local SIM card or purchase an international eSIM plan to avoid roaming charges in Japan. Use apps like “Japan connected-free Wi-Fi” to connect to free Wi-Fi hotspots in hotels, cafes, and other public places. You can also rent a portable pocket Wi-Fi device for reliable internet on the go.

Do I need an international plan in Japan?

No, you don't need an international plan for Japan. Instead, you can buy a local SIM or eSIM, use free Wi-Fi hotspots, or rent a portable Wi-Fi device.

Is it cheaper to buy a local phone in Japan?

No, buying a local phone in Japan is usually more expensive than using your unlocked phone with a local SIM or eSIM. Japanese phones can come with higher costs and restrictions, so it's generally cheaper to stick with your current phone and just get a local SIM or eSIM.