Investigation of smartphone use characteristics underlying problematic smartphone use by dense longitudinal smartphone tracking. - Lea Wazulin; Matthias Jamin; Ionut Andone; Konrad Blaszkiewicz; Iris Reinhard; Mark Eibes; Robert Christian Wolf; Qais Kasem; Alexander Markowetz; Tagrid Leménager; Patrick Bach (Comput. Hum. Behav., 2025)