A few days after getting my iPhone 4S, I started experimented with different phrases and commands to see what Siri would do. I quickly learned that Siri can produce emoticons if you use the right terminology. For example, if you say smiley face Siri will produce an emoticon that looks like this 
and if you say frowney face Siri will produce an emoticon that looks like this 
. This functionality is not limited to Siri – it also works when using the voice dictation in iOS5.
Here is what I have been able to produce so far:
= “Smiley Face”
= “Frowney Face”
= “Winky Face”
A friend of mine mentioned that this works too, but I haven’t had much luck with it:
= “Sad Face”