1. How to contact the Customer Support Center? July 08, 2020 08:43 Updated You can contact our Customer Support Center via the channels below: LINE: @jpmobsupport WeChat: jpmobsupport WhatsApp: FaceBook: https://www.facebook.com/jpsmartsim E-mail: firstname.lastname@example.org Service hours: 10:00 ~ 18:00 (Every day, except New Year's Holiday, Obon or Golden Week Holidays) Related articles 3. How to cancel my contract? 2. How to get the newest promotion information? 4. I forgot to make payments for a few months, and my service has been terminated. Can you reactivate it after I complete all the pending payments? 4. What is MNP? And what is the procedure of changing networks from other carriers to JP SMART CALL? 3. What is the difference between [JP SMART DATA + Voice Call 050] and [JP SMART CALL] sim card?