According to a disclosed embodiment, an incoming call from a first telephone number is received (310). A variable indicating the number of calls received from the first telephone number is incremented (312). The variable is compared to a threshold variable (316). Subsequently, the user is prompted to save the first telephone number in an address book (319) when the variable indicating the number of times an incoming call is received from the first telephone number is equal to, or greater than, the threshold variable. The first telephone number is then stored in the address book. Moreover, an apparatus can be assembled (200) to provide cellular telephone users with, for example, instructions and information via a speaker (228) and an LCD display (238). The apparatus is configured to provide instructions and information to the cellular telephone user at appropriate times, thereby increasing the cellular telephone's usefulness.