Mindrift is seeking native French speakers living in New York City to participate in a 3-day in-person research study in Midtown Manhattan examining how smartphone and app usage varies across languages and cultures. Participants will walk researchers through their phone habits, share activity examples, and complete a brief questionnaire. Candidates must have grown up in France, use French in everyday life, have owned a smartphone for at least 3 years, and be comfortable communicating in English.