Short-term SIM card plan
The short-term SIM card plan starts from eight days (¥3,990) to 31 days (¥7,490), if you’re planning on traveling longer than one month, the long-term plan is a better bang for your buck. Unlimited data is included, with no voice calling or texting. The plan uses either Softbank or Docomo, major Japanese providers that cover 99% of Japan’s population.