This study explores children’s appropriation of media rules in a group of boys (10 years) in Sweden. The analysis is based on focus-group interviews where rules regulating children’s use of mobile phones in school was discussed. Drawing on ethnomethodology and conversation analysis, the focus is on how rules are made sense of and appropriated, and how this contributes to establishing, negotiating, and sustaining a moral order for digital media use. The findings show that the children justify rules by discussing them in relation to their school context, through criticism of the enforcement of rules, and through navigating different rule systems.