Overview
- The drill delivered a location-based alert across Barcelonès, Baix Llobregat, Maresme, Vallès Occidental and Vallès Oriental, reaching devices present in the area at the time.
 - The test message appeared in Catalan, Spanish and English, with authorities instructing recipients to read it and not call 112 since no action was required.
 - The alert used a distinctive loud tone that overrides silent mode and stops only after screen interaction, with some handsets potentially playing it even after airplane mode or power cycling.
 - Protecció Civil will collect anonymous feedback on reception, language displayed and mobile carrier to identify any technical gaps and improve future performance.
 - Officials say the exercise builds public familiarity and checks system reliability for real risks such as chemical incidents, floods and wildfires, following several drills and real activations earlier this year.