Find my iPhone: how to identify each device?

A friend of mine got her iPhone stolen. When entering iCloud to activate the "Find my iPhone" feature, I see that her account has 3 phones associated with it. The 3 phones are named: - Iphone - Iphone - (Name)'s Iphone. How can I know which is her current one? Her previous models are a iPhone 4S, an iPhone 5 and an iPhone 6. I don't see any place to check each phone's model.