Mobile Data Usage Estimates: MB per hour by activity and daily travel presets

Open reference tables estimating how much mobile data common phone activities use. activity_mb_per_hour (8 rows: maps, messaging, web, music, social video, video calls, SD video streaming, laptop hotspot) and daily_presets (4 rows: light, normal, heavy, remote work; MB/day including a 10% background-sync buffer). Figures are estimates used by the open-source trip-data-budget and team-data-planner tools, not measurements; real use varies with app settings, video quality and network. Published by NXTL eSIM, a pay-as-you-go travel eSIM provider (https://nxtlsim.com); released free under CC BY 4.0 for developers, travel apps and AI agents. Country cost guides: https://nxtlsim.com/blog/ . Calculator: https://nxtlsim.github.io/trip-data-budget/