Heading to Japan and drowning in SIM / eSIM choices? Compare four connectivity styles first, then pick a plan shape (total data, daily quota, or unlimited) that matches your trip.

Four ways to stay online

  • eSIM — scan QR, no swap; needs eSIM phone; install on Wi-Fi before departure.
  • Physical SIM — widest handset support; shipping / swap hassle; easy to misplace.
  • Pocket Wi-Fi — great for groups; extra device, battery, deposit risk.
  • Home roaming — simplest; keep Taiwan number; usually the most expensive.

How to choose

  • Short city trip + modern phone → travel eSIM is usually simplest.
  • Older handset → physical SIM or Wi-Fi router.
  • Family sharing maps/video → Wi-Fi hotspot device or an eSIM that allows tethering.
  • Need Taiwan OTP SMS → keep home line active for SMS while data rides the travel line.

Plan shapes

Total-data packs suit light users; daily high-speed + throttle suits navigation-heavy days; full unlimited costs more. Compare DJB Japan eSIM / SIM options by days and hotspot rules before you buy.