manage devices has ambiguous names
So I need to deauthorize an old iphone 4s from my apple id account. Problem is under the manage devices menu inside itunes it lists 7 of my devices. I have two iphones bought and used within weeks of each other. One of the phones is the phone I want to deauthorize (I upgraded to a new iphone 5s). However they both just say iphone (iphone). The phones themselves have unique names but they didn't populate across to the apple id side. Now I don't know which is which. Any way to reveal this or add more descriptive info the iphone category?
iPhone 5s, iOS 7.0.2