The Anthropology of Smartphones and Smart Ageing is a multi-sited research project based at UCL Anthropology, primarily funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 740472). The project employs a team of 11 researchers (mostly anthropologists) who conducted simultaneous 16-month ethnographies in Al-Quds (East Jerusalem), Brazil, Cameroon, Chile, China, Ireland, Italy, Japan and Uganda. Launched in October 2017, the fieldwork took place between February 2018 and June 2019. This collaborative five-year project is based on a comparative analysis of the impact of the smartphone on the experience of mid-life (people who do not consider themselves either young or elderly) around the world and considers the implications for the use of smartphones in the field of health.