My iPhone is always autocorrecting my text messages, emails and other forms of communications to the incorrect word. This is because I'm using tech jargon, slang, abbreviations or other words that are not in the default dictionary. Well the iPhone does have a custom dictionary function, but it is not easy to get to.
Lifehacker has published a step by step guide on how to enable the custom dictionary so you can add all those words that autocorrect should not be touching. Check out the post at the link below:
http://lifehacker.com/5822520/how-to-add-new-custom-words-to-your-iphones-autocomplete-dictionary