Unveiling Network Performance in the Wild: An Ad-Driven Analysis of Mobile Download Speeds - Bermejo Agueda, Miguel Angel; Callejo Pinardo, Patricia; Cuevas Rumin, Ruben; Cuevas Rumin, Angel; Durairajan, Ramakrishnan; Rejaie, Reza; Mayol, Alvaro (WWW '25: ACM on Web Conference 2025, 2025)