Can I make phone calls with a Japan data eSIM during my snow trip?

Most Japan-focused travel eSIMs are data-only and do not include a local phone number for traditional voice calls or SMS. However, you can easily make voice and video calls using apps like WhatsApp, FaceTime, Line, Skype, or Telegram over your data connection. This is usually enough for contacting hotels, tour operators, and friends. If you need a Japanese phone number for specific reasons, you can combine your data eSIM with an internet-based calling service that provides a virtual local number.