Find Apple Id With Serial Number
Locate the IMEI Number You can locate your iPhone's IMEI number by tapping 'Settings' and then 'General.' Tap 'About' and scroll down to the IMEI section. 
Stolen Ipad Serial Number
Law enforcement might request the serial number of your device. Find your device serial number. Report your lost or stolen device to your wireless carrier. Your carrier can disable the account, preventing phone calls, texts, and data use. Find My iPhone is the only way that you can track or locate a lost or missing device. A serial number identifies a specific device such as an iPhone. Knowing your serial number does not in itself allow you to track your device if it is lost or stolen. However, your local law enforcement agencies may be able to use the serial number to confirm that a device has been stolen and then return it to you.