The method for suggesting/selecting a word when typing in any app on the iPhone is not user friendly at all.
WHAT IT DOES: When a word suggestion pops up, simply continuing with the message will auto-select the suggested word. You can also select the suggested word and have it finish (if it's correct) the word for you, BUT you must use caution not to hit the small "x" on the suggestion bubble, as that will close out the suggestion completely. The inverse is also true: if you attempt close the suggestion text by hitting "x," it's so very small that it's very easy to select the word suggestion you didn't want.
WHAT IT SHOULD DO: None of my devices should ever take over and automatically replace a word I'm using; that should be 100% my choice. As I type along and the phone suggests a different word, continuing past the word should cancel the suggestion bubble. To select the word, I should be able to reach up and touch the suggested word. The suggestion bubble should also be further away from my entry window so as not to accidentally select it.
Many users often intentionally misspell words in text and it shudnt b so difficult to jus type wat i wanna type on my phone.