Clap to Find my Phone, Whistle Phone Finder Simple Clap to Find your Phone with Clap Finder and Whistle Finder App, If you lost your phone? No worries! Find My Phone by Clap and Whistle is here for you! With our clapping app, you can find your phone in seconds, even if it's on silent mode. Just clap your hands or whistle, and your phone will start ringing, flashing, and vibrating. Our Clap to Find Phone app is easy to use and has a variety of features to help you find your phone, including: