Abstract: A method for activating a voice control function of a mobile phone communicating with and carried in a vehicle is provided. The method includes the following steps. A sensing unit arranged in the vehicle senses a real-time speed of the vehicle when the vehicle is moving. A processor of the vehicle determines whether a real-time speed of the vehicle exceeds a predefined speed according to the sensed real-time speed of the vehicle. The processor controls the mobile phone to activate the voice control function of the mobile phone if the speed of the vehicle exceeds a predefined speed. A vehicle using the method is also provided by the present disclosure.