TOP SIM: the best data SIM in Japan

Japan’s Most Reliable Data SIM
— for Residents and Travelers Alike

Download the app and choose a data plan that works best for you.

iOS

Japan’s Most Reliable Data SIM— for Residents and Travelers Alike

Download the app and choose a data plan that works best for you.

App Store Google Play

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

    Plan/Validity

    Tax included.
    30 days 60 days 90 days
    5GB ¥990 ¥1,815 ¥1,925
    10GB ¥1,540 ¥1,870 ¥1,980
    15GB ¥2,200 ¥2,365 ¥2,475
    25GB ¥3,080 ¥3,410 ¥3,520
    50GB ¥4,576 ¥4,697 ¥4,807
    100GB ¥8,151 ¥8,272 ¥8,382
    200GB ¥14,630 ¥14,795 ¥14,905
    Tax included.
    Plan/Validity 5GB 10GB 15GB 25GB 50GB 100GB 200GB
    30 days ¥990 ¥1,540 ¥2,200 ¥3,080 ¥4,576 ¥8,151 ¥14,630
    60 days ¥1,815 ¥1,870 ¥2,365 ¥3,410 ¥4,697 ¥8,272 ¥14,795
    90 days ¥1,925 ¥1,980 ¥2,475 ¥3,520 ¥4,807 ¥8,382 ¥14,905

    * An issuance fee (¥330) will be charged only once.

    How to order and activate the eSIM

    Follow these simple steps to get started.

    • Download the app

      Follow the instructions on the app to purchase a plan

    • Make the payment

      Show the payment barcode on your smartphone to the store clerk in a convenience store or pay online with your credit card.

    • Activate your eSIM

      You'll receive a QR code to activate your eSIM and get connected in minutes.

    eSIM Activation Guide

    Download the TOP SIM app to activate your eSIM

    iOSAndroid

    • Install the TOP SIM App

    • Choose your data plan

    • Make the payment

    • Set up your device

    • You're all set!

    iOS

    QR Code SetupManual Setup


    Android

    QR Code SetupManual Setup

    Why to choose TOP SIM?

    • Instant Activation

      Activate & connect in minutes – no waiting.

    • Multi-Language Support

      Get support in over 15 languages.

    • Recharge & Reuse

      No need to buy a new eSIM — just recharge and go.

    • Easy Payment

      Pay your way: convenience stores, credit card, or cashless options.

    • Best Local Coverage

      Powered by docomo — Japan’s top-tier mobile network.

    • Eco-Friendly Choice

      eSIM means no plastic waste — a greener way to stay connected.