The Transitions project is a researcher-practitioner partnership project to understand technology use and wellbeing in children and adolescents in Latin America. Alongside our colleagues (Innova Schools and Common Sense Education), we have developed a large-scale culturally and developmentally informed intervention to foster healthy digital habits in schools in Perú and México. The COVID-19 pandemic motivated us to redesign our research to promote well-being during a crisis, highlighting the role digital technology plays during lockdown. We have collected data on mental health, well-being and digital media use of over 5000 adolescents in low and middle income urban settings in Perú and México both before and during the pandemic.