The present application provides a system and method for providing telephony functions for operation during a computer game application execution. In particular, a system and method for performing mobile telephony calling and/or messaging operations in-game during computer game application execution is provided. In the disclosure, a mobile telephony user interface is provided and operated in conjunction with a computer game user interface presenting a game environment to a gamer. Mobile telephony operations are provided by way of the mobile telephony user interface in a manner that at least substantially avoids interrupting gamer perception of ongoing game play and gamer interaction with the game environment.