Why can't I see their emojis?

So I have an iPhone 4 and it is upgraded to iOS 5 and my cousin has an Android. When we text I can't see her emojis, but she can see mine. How do we fix or change that?

Did you try updating the app?

Emojis are in the OS of the phone you can't view Android emojis unless you're using Androids OS.

android OS is more open source than apple so it makes sense android can see iOS emojis

Why can't i see emojis from other iphones

Why can't I see my friend iPhone emojis is it because iPhones are better than Androids and they have recent updates with different special emojis