My iPhone 4S won't sync with my macbook pro version 10.9.1
I got my Macbook for christmas (2013) and my iphone 4s (2011). When I plug my iphone into my old macbook (2007) it works fine but when I try plugging it into my new macbook (2013) it keeps dinging until I unplug it from computer. Sometimes an error message will pop up in iTunes. It won't sync at all. I haven't backed up my iPhone lately and I'm afraid I'll lose a lot of recent stuff. My old macbook was too slow to handle all my data and photos from my iphone.
Help me please!