How to locate the serial number of a dead iOS device when all else fails.
In this guide I will tell you how to locate your Apple device serial number. Sometimes you have an Apple device that will not turn on because it's broke (DOH!). That same device might have a serial number on the back of it you can't read, and you have long since thrown away the packaging. So now how the heck are you going to find the serial number? The good news is, iTunes records all the serial numbers for your iOS devices. You just need to get creative!
Let's try the easy way first
Finding your serial number(s) via the iTunes help / about.
1) Open iTunes
2) Click on the help menu and then hold down the control key. Now click "About iTunes".
If successful it should show your device ID's. For me, it had, my iPod Nano and my iPad but It didn't have my iPod Touch, which is the one I was looking for. So I had to get a little more creative.
Next we will go hunting for the all great and powerful iPodDevices.xml
In Vista and Windows 7 this file is located in C:\USERS\(username)\AppData\Local\Apple Computer\iTunes
In XP it should be located in \Documents and Settings\<userName>\Local Settings\Application Data\Apple Computer\iTunes\iPodDevices.xml
Open the XML file with word or wordpad and do a search for the word Serial number. With any luck you should find your serial number in this file. If you have more than 1 iOS device I would recommend trying the first method first, and then take a screenshot the number it screen gives you. Then compare them with the one in the file. That way you can easily tell which serial is the one you are missing.
Hope this helps someone with a dead iOS device, who is trying to locate their serial number before they call Apple support.