Techniques for locating and identifying mobile devices are described. According to various embodiments, an ambient sound signal may be detected using a microphone of a mobile device. Thereafter, it may be determined that the ambient sound signal corresponds to a predefined user query for assistance in locating the mobile device. A predefined response sound corresponding to the predefined user query may then be emitted, using a speaker of the mobile device. Additionally, user identification information may be displayed on a screen in response to detecting contact with the mobile device using at least one of an accelerometer and a gyroscope.