You can sync your iPhone to iTunes to transport music, pictures, videos, etc.
you need itunes, and sync it on itunes (it says sync ) at the bottom right
Sync your iPhone to iTunes on our computer
Sync it to iTunes.
Plug in your iPhone. Connect to iTunes. Click Sync.
After you buy the music in the itunes store you have to sync it.
activate the phone first and then sync it with your itunes on your computer
I had this problem too. I had iTunes installed already, but when I tried to sync my iPhone, nothing came up on my iPhone screen. I quit iTunes, and unplugged my iPhone, then plugged it back in and opened iTunes again.
You have to Sync it with iTunes.
sync you Iphone with your Itunes library.
Via iTunes, add the .ipa files to iTunes Library and sync with the iphone
Through iTunes on your PC or Mac. In there you sync it, with your iPhone.