Hi, I searched a bit but I doesn't exactly answer my question and I really don't want to make a foolish mistake and loose all my data. I want to just be able to synch my iPhone (3GS) to my new laptop (Mac) from my old one (Acer). I don't care about the iTunes library all I want is to keep all the songs stored on the iPhone + contacts + apps For the moment, I am able to connect the phone to the laptop and listen to the music but I can't make any changes or add new music. It asks me to restore it meaning : erasing everything Could anyone give a step by step process in order to then restore flawlessly the iPhone ? PS: I read about backing it up, which I did on new laptop. Thanks !