TOP SIM: Stay connected, stress-free.
With TOP SIM’s rechargeable eSIM, you can activate mobile service instantly – no delivery, no SIM swap. Whether you're visiting or living in Japan, enjoy fast, flexible, and reliable connectivity.
Available data plans
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¥990
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¥1,540
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¥2,310
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¥3,740
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¥5,280
* An issuance fee (¥330) will be charged only once.
How to order and activate the eSIM
Follow these simple steps to get started.
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Download the app
Follow the instructions on the app to purchase a plan
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Make the payment
Show the payment barcode on your smartphone to the store clerk in a convenience store.
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Activate your eSIM
You'll receive a QR code to activate your eSIM and get connected in minutes.
eSIM Activate guide
Download the TOP SIM app to activate your eSIM
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Install the TOP SIM App
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Choose your data plan
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Make the payment
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Set up your device
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You're all set!
iOS
Android
Why to choose TOP SIM?
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Instant Activation
Activate & connect in minutes – no waiting.
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Multi-Language Support
Get support in over 15 languages.
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Recharge & Reuse
No need to buy a new eSIM — just recharge and go.
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Easy Payment
Pay your way: convenience stores, credit card, or cashless options.
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Best Local Coverage
Powered by docomo — Japan’s top-tier mobile network.
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Eco-Friendly Choice
eSIM means no plastic waste — a greener way to stay connected.
