iCloud: Play a sound on your device
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.
If you don’t see Find My iPhone on iCloud.com, your account just has access to iCloud web-only features. To gain access to other iCloud features, set up iCloud on your iOS device or Mac.
Click All Devices, then select the device on which you want to play a sound.
If you have Family Sharing set up, your family members’ devices appear below their names.
In the device’s Info window, click Play Sound.
After the sound plays, a confirmation email is sent to your Apple ID email address.