A method for controlling functions of an electronic device by a server includes establishing a communication connection between the server and the electronic device when a distance between the electronic device and the server is less than or equal to a preset value. Positioning information of the electronic device is acquired at every preset time when the electronic device enters a preset control area. A control mode of the electronic device is determined according to positioning information of the electronic device. Once a control signal is generated according to the control mode of the electronic device, status of an image-capturing device, and/or status of a microphone of the electronic device are controlled according to the control signal.