In iOS under the preference panel and under the keyboard settings there is one of those cool tricks. The shortcut list. You can teach your iOS to change “omw” to “On my way!” or “xap @ so it populate my email address.
There is another software even more powerful called TextExpander, that work on the iOS as well as the Mac. In my opinion this are little things that not many people know and are aware but can save you typing minutes, specially for those things we repeat a lot.
i.e. I have create a shortcut for each book that I have written, with the name and the url to amazon. If I type for example: “25tfp” automatically get’s transformed into: “25 Tips for Productivity” and “w25tfp” create “http://bit.ly/25t4p