Adapter cable warranty

Assuming your iPhone is in warranty I think so is the warranty of included genuine apple accessories, I have heard of people taking cables into apple stores and getting instant exchanges but again I am not sure of how true this is.

Your best bet is probably just sending apple support a message regarding accessory support and just pop the question and they should be able to tell you the specifics and help you out!

Click on the Get Support link at the top right of this page to start the service process.