How to Stay Connected in Japan: Choosing Between eSIM, SIM Cards & Pocket WiFi
- Jack Ranson
- Oct 3
- 4 min read
Japan is set to surpass 40 million international visitors, making it a must to stay connected. Whether you're getting around Tokyo or posting live updates on social media, having reliable internet is a given. This guide gives you the lowdown on your options, helping you pick the best way to stay connected.
Understanding Your Connectivity Options in Japan
Japan's public WiFi isn't super widespread. International roaming is an option, but it can blow through your travel budget fast. Luckily, there are three main solutions that travelers love: Japan eSIM, regular SIM cards, and Pocket WiFi devices.
What is a Japan eSIM?
A Japanese eSIM is a digital SIM card that's embedded in your smartphone. Once you've purchased a plan, you'll get a QR code emailed to you, and your service will be activated. The best part is that most smartphones nowadays are compatible with eSIM technology, and some newer iPhone models are actually eSIM-only.
This technology links you with Japan's top carriers, such as NTT Docomo and SoftBank, so you're covered no matter where you go. Companies like Ezy eSIM have streamlined the process, offering instant setup and a hassle-free install.
Japan eSIM vs Physical SIM Cards: Making the Right Choice
The Japan eSIM Advantage
Japan eSIM solutions take about 15 minutes to be set up. And the best part, you don't need to swap out any actual SIM cards. You can keep using your usual number for calls and texts, while still getting Japanese data.
Data plans usually come in a range of options, from 3GB up to unlimited. Most Japanese eSIM providers have plans that last from 3 to 30 days. Since you manage everything through your phone, you don't have to worry about losing those small physical cards.
Traditional SIM Cards: The Budget-Friendly Alternative
Physical SIM cards are still a great choice for travelers with older phones. You can pick them up at major airports like Narita and Kansai, and they usually cost less than eSIMs. The downside is you'll have to physically swap them out, which means digging out a SIM ejector tool.
Physical SIMs tend to be more compatible. If you're on a tight budget and traveling, a traditional SIM card is a good bet.
Pocket WiFi for Japan: When to Choose This Option
Pocket WiFi devices set up a personal hotspot that lets multiple devices connect at the same time. They're great for families or business travelers who carry laptops and smartphones. The battery usually lasts 8-12 hours, so you're covered all day long.
Key things to keep in mind are carrying an extra device and needing to charge it daily. Companies like Ezy eSIM have picked up on these drawbacks, which is why many travelers now go for the simplicity. That being said, Pocket WiFi is a great option when you're splitting costs with a group or need internet for devices.
Comparing Data Speeds and Network Coverage
Network performance really depends on who you choose as your carrier. Recently, download speeds have been tested, and they range from 25 Mbps to over 140 Mbps. NTT Docomo does a great job covering rural areas, while SoftBank leads the way in urban 5G.
Most Japan eSIM plans use these major networks, giving you reliable service. If you're heading to remote areas like Hokkaido or rural Kyushu, try providers that run on the Docomo network.
Installation and Setup: Step-by-Step
Setting Up Your Japan eSIM
First, make sure your device is compatible and unlocked by your carrier.
Buy your Japan eSIM plan online before you leave.
You'll get the QR code via email - usually in just a few minutes.
Go to your phone's cellular settings.
Tap "Add eSIM" and scan the QR code they sent you.
If your provider needs you to, turn on data roaming.
Once you're in Japan, just activate your plan.
The entire process usually takes less than 15 minutes. Ezy eSIM offers round-the-clock customer support to help with any tech queries.
Physical SIM Card Installation
Switch off your device. Use a SIM ejector tool to open the tray. Put the right-sized SIM in. Then, power on and set up any necessary APN settings. This whole process only takes 5-10 minutes, but be sure to keep your original SIM card safe.
Special Considerations for Extended Stays
If you're staying in Japan for a while and need to make voice calls, look into voice-enabled Japan eSIM plans. They come with a local Japanese number, which is a must for booking restaurants and dealing with emergencies. Plans start at 1GB and go up to 30GB, with prices beginning at around ¥1,650 ($11).
Unlimited data plans sound like a dream without worrying about data limits. But keep in mind that many plans have Fair Usage Policies. If you hit 2-5GB a day, your speeds might slow down. Some providers do offer "truly unlimited" plans.
Making Your Final Decision
Your ideal connectivity solution varies. If convenience is key and you want to skip the airport hassle, go for a Japan eSIM. But if budget is your top priority, a physical SIM card is the way to go. Lastly, Pocket WiFi is your best bet when you have multiple devices to keep connected.
However, for most travelers today, Japan's eSIM tech is the way to go as it offers convenience and affordability. Companies like Ezy eSIM have made it easy to get reliable internet access in Japan.
Key Takeaway
Traveling in Japan no longer means settling for less. You can choose a Japan eSIM, a traditional SIM card, or a Pocket WiFi. With reliable internet, you can make your Japanese adventure truly unforgettable. To find the best option for you, think about what you need and how you like to travel. This will help you pick the solution that keeps you connected throughout your trip.
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