Quick answer: how long 1GB lasts depends on usage. Messaging + maps + light browsing stretches further; short video, photo uploads, and hotspots burn through it fast.

Updated: 2026-06-26. Figures are editorial estimates.

Estimate by trip shape

  • Count days, travellers, video/social habits, and tethering needs
  • Use 3 / 5 / 7 / 10-day mental tables before picking a plan

Cut waste

Download offline maps, use hotel Wi-Fi for uploads, and keep travel eSIM data for navigation only when possible. Then compare destination eSIMs (Japan / Korea / etc.).