<p>With the increasing use of technologies of communication, it is more relevant to study the addiction to check social networks con mobile phones. A cross sectional study was design to address the relationship between intolerance to uncertainty, impulsivity and anxiety state on cravings to Facebook, Instagram and Whatsapp on mobile phones. Data from 515 persons who used all three social networks mentioned. Intolerance to uncertainty was related with dimensions of intensity of desire and social interference, and impulsivity was related to control of the desire. It can be concluded that these two variables have an important role on the level of craving to the use of social networks in mobile phones. Clinical implications and future research lines are discussed.</p>