How to fix this iTunes sync problem?

I'm having a number of problems trying to sync music on to my iPhone 4S. I have the latest version of iTunes but 2nd to most recent firmware.

It says/does these things when trying to sync my phone

- Waiting for changes to be applied

- Determining tracks to sync

- Cancels sync automatically

Q: How do I fix this iTunes sync problem?
A: You buy Android.

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I have the same matter with you, i want to sync my iPhone file on iTunes for later use.
Resent days, i'm using Anymp4 iPhone transfer, it can transfer iphone file on pc and sync iphone music, video on iTunes. Maybe you can have a try. Hope i can help you.