LOOK AND FEEL: In my hands, the Typo works fine - just like a BlackBerry - except it is blocked from using Apple Inc.'s autocorrect function while typing. So that means you have to tap misspelled words that are underlined in red later and choose from options to fix them. If you have an iPhone 5S, the fingerprint sensor will be covered up, so you'll have to resort to inputting a passcode.
