You can easily control your PC or Mac with your iPhone. It’s super cool. Go download the TeamViewer app from your iPhone (it’s free) and then download the TeamViewer software to your computer. Here’s the download link – http://www.teamviewer.com/download
Now install and run TeamViewer on your computer and you’ll see the user ID and password. Then simply launch the app from your iPhone and key in the TeamViewer your computer’s user ID and password.
Wait a few seconds and walla, you’ll be able to control your computer using your iPhone. Your iPhone is now a mouse + keyboard! Cool lah.