The Study of Cognition, Adolescents and Mobile Phones (SCAMP) was designed to provide insights into the long-term impacts of mobile phone and wireless technology use. It is a prospective school-based cohort study following several thousand pupils. It aims to examine associations between the use of mobile phones and other wireless devices that emit radio-frequency electromagnetic fields (RF-EMF) and cognitive, behavioural, educational, physical and mental health outcomes during adolescence.