回答“hard drive is failing on the iPod. can I extract my songs?”I've found a guide about "how to extract music from iPod". I hope it helps.
回答“My iPhone doesn't switch on and doesn't recognized from iTunes.”I've found a related guide for you. How to Backup iPhone when iTunes Doesn’t Recognize iPhone
回答“How do I transfer data from old iPhone to my new Android?”Once you save your iPhone stuff on your computer, it would be just a piece of cake to transfer them to your Android. Here's an article about iPhone backup photos issues, I hope it helps.