An operating method of an electronic device for function execution includes receiving an execution signal associated with executing a voice command function performed based on a voice input, confirming a locked state of an electronic device, and providing an entire function execution state in which access to the entire information stored in a memory is allowed or a partial function execution state in which access to a part of the information stored in the memory is allowed, based on the locked state in relation to executing a function corresponding to the voice input or outputting a result corresponding to the voice input.