Where has my key board tile gone on my nokia lumia 450?

[WPCentral Question]

My tile has vanished enabling me to make a call

 

[Aziz Abdurachman]

Whoa?
Neither keyboard tile nor Lumia 450 is available, I have never heard of it.
From your question I assume you referring to want to make a call. It's on "Phone" app if you search on app list, and the keypad-like thing that you can use to make a call is in the bottom screen (in app bar) of Phone app.