This fragile nature means that the iPhone and iPod generation variety often requires service of some sort. These services will often just replace the glass on the iPhone screen so it works again and this will prevent You from losing all your personal data as well as from spending a huge amount of money that you don't have to buy a new device.
There are precautions you can take as well to help You avoid this problem and these include for example get a cover for the iPhone. Particularly good cover would be one that is easy to handle that will help to keep it in your hand during a great gesture. Remember also to somehow protect the screen. This can be more difficult as the screen is also the mechanism of the input, but there are a lot of movies and protector that you can use to give a little extra screen protection against scratches or cracks.