Abstract: Systems, methods and devices for audio output responsive to a wireless communication link are disclosed, as well as related systems, methods and devices. In various embodiments, a spatial position of a second device relative to a first device may be determined responsive to a wireless communication link between the first device and the second device, and, responsive to the determined spatial position, at least part of an audio signal may be processed to include audio effects, and speaker(s) that output sound corresponding to the processed audio signal may have a directional “feel” to a listener. Spatial position may include a spatial direction and/or a distance. In related systems, methods and devices, various actions may be taken responsive to spatial position of a first device relative to a second device, such as selecting audio content, loading audio content, requesting and/or receiving audio content from an audio content repository, changing audio effects that are encoded into audio content (e.g.

Abstract: A system for diagnosing problems experienced with a mobile device includes a processor and first, second, third and fourth mirrors arranged such that light travels from a mobile device display to strike each of the first, second, third and fourth mirrors in turn and is reflected into a camera of the mobile device. The processor is configured to analyze the light received by the camera of the mobile device to diagnose problems experienced with the camera, the mobile device display or both.