If you are unlucky enough to have cracked your iPhone case and don't have the money to replace it, then maybe it would be better to color it a little since you use it like that anyway. An owner of an iPhone terminal thought to turn something bad into something good, so he colored the cracks of the iPhone 4/4S terminal case and the device suddenly became cool, interesting. I suppose that the replacement would be much more practical and logical, but if you don't want to do this, you can always use the alternative proposed by the image above.