How do I change from 3x4 keyboard to rotary keyboard?

[AC Question]

In Keyboard Settings / Samsung keyboard it shows English(US) and underneath that, in blue, 3x4 keyboard. I thought that tapping on this would bring up an option to change to rotary keyboard, but nothing happens.

 

[B. Diddy]

Welcome to Android Central! Which phone do you have? I'm not familiar with a rotary keyboard--can you describe what it is?