A terminal apparatus includes a controller configured to: transmit, to a server apparatus, a suggestion request requesting a suggestion of a function to be invoked; receive, from the server apparatus, a suggestion response that specifies a suggested function determined by the server apparatus; and invoke the suggested function. The suggestion request includes face image data of a user. The suggested function is determined by applying the face image data to a learned model. The controller is configured to: evaluate, based on face images of the user, a degree of change in facial expressions before and after invoking the suggested function; and transmit, to the server apparatus, a learning request requesting re-learning of the learned model when the evaluated degree of change in the facial expressions satisfies a predetermined condition.