5. Can I use JP SMART SIM in other countries out of Japan? May 26, 2020 07:32 Updated Unfortunately not. JP SMART SIM is only useable within Japan. Also, data-roaming is not available regarding this matter. Related articles 1. How can I set up internet data on the Android device? 2. How can I set up internet data on the iOS device? 2. How long does it take for the delivery? 3. Can I apply for JP SMART SIM even when I am not living in Japan? 5. How can I make an International Call via 050 Cloud Softphone app?