Parental mobile devices’ use while caring for toddlers is related to lower quality parent-child interaction and decreased interactions. This may limit parents' ability to perceive and respond to children’s emotional signals and needs, causing a technoference, and impacting the attachment relationship and other emotional competencies. The study DATE, conducted among 64 families with toddlers (18 month to 36 month), aims to explore associations between children’s attachment representations, mobile device use, and children’s emotional competence, taking into account the socio-economic environment of the families. Preliminary results have shown that technoference was linked with more children’s problematic socioemotional behaviors, children’s attachment insecurity and parent’s media use. Parent’s media use was also linked with more children’s attachment insecurity. Implications and directions for future research are discussed.