How many Data amount do I need? Kana/Hiromi September 12, 2019 10:36 Updated Follow A person may use about 200MB~ per day, depending on personal habit and lifestyle. Related articles I am confused about unlimited data. What does unlimited data service mean? What is the actual speed? How do I check my data usage? (travel SIM/WiFi) Can I get a global IP? I will visit to OOOOO. How is the coverage? Comments 0 comments Please sign in to leave a comment.