While the iPhone’s virtual keyboard just fine, but does not apply to all situations, such as sitting in the car, the bumps what is likely to press the wrong, want to do fast and accurate import of text, this Zhuan for the iPhone 4 Add full keyboard design may be able to solve this problem, through the bottom of the interface with the iPhone 4 connect, it can automatically screen virtual keyboard of the machine, and the border with the carbon material can border on the iPhone 4 play a protective effect . Of course, it does not affect your mobile phone, the bottom of the keyboard also comes with an interface charge, install the software and other functions can as usual. But if the arrow keys on the better, as if playing games will be very convenient.