Q: A couple of weeks ago, you said that most smartphones provide better picture quality than a $300 pocket camera. Is this because camera manufacturers are unable to produce such a camera, or because ...

You’ve probably heard musicians like Neil Young complain over the last few years about the sound quality of digital music. But thanks to a new generation of so-called audio enhancement apps, your ...

Researchers in the U.K. have developed a cellphone that is charged by ambient sound, eliminating the need for a charger. Filled with energy-harvesting “nanogenerators,” the device uses a principal ...