Find my old iphone by seri number

You can't locate the phone using the serial number. You can only locate the phone by using Find My. See the Apple Support articles below for more information about how to locate the phone.

Have you tried using iCloud.com/Find My Phone? If your screen won't display, you can borrow someone else's device/computer to access iCloud.

Find My Phone - Lock and track your device using Lost Mode.  * 

Find My Phone - If your device is lost or stolen. *