Pocket WiFi vs eSIM in Japan: Which Should You Choose?

Quick answer

Choose <strong>Pocket WiFi</strong> if you are traveling as a group and staying together, or if you need to connect multiple devices. Choose an <strong>eSIM</strong> if you are traveling solo, you want the simplest setup, or your group will split up during the day.

• Best for families and friends: Pocket WiFi
• Best for solo travelers and couples: eSIM
• Best for multiple devices: Pocket WiFi
• Best for light packing and speed: eSIM

Key differences in Japan

Both options use Japan's major mobile networks and give you fast LTE or 5G in most cities. The real difference is how you connect and how flexible you want your travel days to be. If you are not sure what an eSIM is, start with our What is an eSIM guide.

When Pocket WiFi is the better choice

Pocket WiFi is perfect for groups that stay together, like a family exploring Tokyo, Kyoto, and Osaka on the same schedule. It also works well if you carry a laptop, a camera that uploads files, or you stream video in the evenings.

• Families or friends who share one connection all day
• Travelers with multiple devices
• Phones that are locked or not eSIM compatible
• Heavy data users, like long video calls or streaming

You can usually pick up Pocket WiFi at Narita, Haneda, or Kansai (KIX) airports and return it at the end of your trip. Just remember to keep it charged and carry a power bank during long Shinkansen days.

When eSIM is the better choice

An eSIM is the lightest option and the easiest to manage if you are traveling solo or you plan to split up in cities like Tokyo or Fukuoka. It gives you a direct data line on your phone with no extra device. Check your phone first with the eSIM compatibility tool.

• Solo travelers who want fast setup
• Couples who do separate activities during the day
• People who dislike carrying extra devices
• Short trips where simplicity matters most

Most travel eSIMs are data only, so you will use apps like WhatsApp, LINE, FaceTime, or iMessage for calls. If you are unsure about data size, use our data usage calculator.

Cost and data expectations

Cost depends on group size. For one traveler, eSIM is usually cheaper. For a family, a single Pocket WiFi unit can be more cost effective. Always check the plan details in our Plans and Payments guide.

• Solo: eSIM usually wins on price and convenience
• 2 to 3 people: depends on data use and whether you stay together
• 4+ people: Pocket WiFi often costs less per person
• Unlimited plans can slow down after heavy use, check fair use rules

Setup and arrival tips

If you need extra help, visit our Help Center.

Real travel scenarios

• Solo in Tokyo and Kyoto: eSIM for fast setup and easy navigation
• Family trip with kids: Pocket WiFi so everyone shares one connection
• Friends in Osaka who split up: eSIMs for each person
• Remote areas like Hokkaido or Shikoku: choose a plan on strong local networks

If you are unsure, you can also combine both: use Pocket WiFi as the main connection and add a low data eSIM for days when the group splits up.