#STAYATHOME IN TIMES OF COVID-19 is a research project conducted during the first lockdown of the Covid-19 pandemic in 2020. The aim of the project was to explore how young adults in Switzerland (Canton Ticino) and Italy (northern regions) experienced the lockdown as one of the most drastic measures to contain the spread of the virus. More specifically, the project aimed to understand the relationship between smartphone use and well-being in young adults during the lockdown. In order to do so, the Ethica application has been used which unobtrusively traces smartphone use. In addition, participants received a short questionnaire directly on their smartphone once a day, for 30 consecutive days, in which they were asked to report on the type of smartphone use they made and how they felt. The study was funded by the Fighting Covid-19, Together. initiative by Ethicadata.com and conducted in collaboration with the University of Saskatchewan.