According to various exemplary embodiments, a communication request from a caller is received at a mobile device associated with a callee. A relationship between the caller and the callee is determined. Animation rule information is accessed, where the animation rule information describes a plurality of animation rules corresponding to a plurality of relationships. Thereafter, a display of an animation is generated via a user interface in the mobile device of the callee, based on a specific animation rule in the animation rule information that corresponds to the relationship between the caller and the callee.