How much data do I need for a Taiwan trip?

For a typical 7-day Taiwan trip covering Taipei, Taichung, and a day trip to Jiufen or Sun Moon Lake, 5 GB to 10 GB is enough for most travelers. A 10 to 14-day trip adding Kaohsiung, Alishan, and Taroko Gorge with daily ride-hailing, Google Maps, and casual photo uploads usually needs 10 GB to 25 GB. Heavy users uploading content from night markets or working remotely should pick 50 GB or unlimited. Taiwan is a data-intensive country because the local society is heavily app-driven for everything from food orders to transit.