For a typical 7 to 10-day Malaysia trip covering KL, Penang, and Langkawi, 10 GB is enough for most travelers. A 2 to 3-week trip adding Malacca, the Cameron Highlands, and East Malaysia with daily Grab, Google Maps, WhatsApp, and casual photo uploads usually needs 25 GB or more. Heavy users uploading content from Borneo or working remotely from KL or Johor Bahru should pick the unlimited plan or the 100 GB option. Malaysia is a digital nomad-friendly country, so longer-stay travelers typically need more data than they expect.