iCloud: Play a sound on your device
If you think your lost iOS device or Mac is nearby, play a sound on it to help you find it.
Play a sound
If you’re using another iCloud app, click the app’s name at the top of the iCloud.com window, then click Find My iPhone.
Click All Devices, then select the device on which you want to play a sound.
In the device’s Info window, click Play Sound.
After the sound plays, a confirmation email is sent to your Apple ID email address.