Can I use SMS? Kana/Hiromi December 06, 2018 07:15 Updated Follow Yes, you can send SMS. Related articles Can I send SMS overseas? Can I use voice mail? Can I make international calls? Can I use internet outside Japan / in my home country? What happens if I do not use all of my data allowance. Will the unused data allowance be carryovered? Comments 0 comments Please sign in to leave a comment.