You don't need another Apple device to use the Find My service to locate your lost iPhone. Find My gives several options to ...

Note: I'm not using four iPhones simultaneously, Apple knows all the devices associated with a particular iCloud account.

Find your missing iPhone in the Devices list. From here, you'll see the same options for playing a sound, marking your device as lost or erasing the device as you would in the app. If you misplace ...