A lot of us have lost our smartphones or tablets, and sometimes we can't find them even if we use the best find-my-phone apps. This is one of the most frustrating situations, especially if you have a mobile phone that is not equipped with GPS, so you can't use the standard GPS apps. In this case, the best solution is to find a way to locate your device using the sound it emits.

This app, called Whistle Phone Finder PRO, is designed to detect any Android device that is running on the phone and uses the microphone to capture any sound. It is the best solution for finding your device if you can't use the standard find-my-phone apps.

Once you have found your device, you can choose to enable or disable the alert for incoming and outgoing calls. You can also choose to set the volume of the notification.