USB Connector Cable Compatible with Apple iPhone / iPod (White)
This cable should not be marketed for the Iphone-4.  I cannot speak for other models, but the cables will not transmit data nor power to the Iphone-4.  One can twist and push the cable in to get some stuttering results but I fear this may only damage the connection points.   The cables are sold with free shipping from Amazon.  They are cheap enough to experiment with and the sellers will refund you if you return the item, but will not cover the return costs.  Purchase at your own risk.