For a typical 3 to 5-day Belgrade city break, 5 GB is enough for most travelers. A 7 to 10-day trip adding Novi Sad, Niš, and a Zlatibor or Tara extension with daily Google Maps, ride-hailing, and casual photo uploads usually needs 10 GB to 25 GB. Heavy users uploading Belgrade nightlife content, attending EXIT Festival, or working remotely should pick the unlimited plan. Belgrade's café and digital nomad culture means longer remote work sessions — 25 GB is the sensible floor for a working visit.