You hit the menu button. See my screenshots. Using the stock app.
Sent from my DROID RAZR running 4.1.2
I found this in the Android keyboard settings based on an AC post.
View attachment 61706
View attachment 61708
Sent from my DROID RAZR running 4.1.2
I had the same issue as well. I found a post in this forum which claims that emojis work only on Android 4.2.
Sent from my DROID
I've seen that too now a couple times, and guess that's the truth and end of story for now.
Frustrating.