In the appropriate iMessage conversation, tap the blank iMessage bar across the bottom of your screen like you're going to type something. 2. Tap the emoji keyboard icon -- the smiley icon -- in ...

Credit: Mashable Tapping this icon will give you a blank canvas to write or ... You can also send a selection of "full-screen" effects which see iMessage backgrounds animated.

If iMessage or FaceTime is stuck on the "Waiting for activation" screen, try resetting both apps. You can also try restarting your phone, refreshing your connection, or resetting your Apple ID.