I'm visiting my mum here in Singapore. I have an iphone arriving, but obviously don't have my computer. I'm reading the manual now (yes, that excited), and it says I need to connect it to itunes to use it. My mum has a macbook but obviously has her own apps and music. I also understand you can only sync one phone to a computer? So the question is, can I open my iphone, put in my micro sim (already activated in the UK), and use it to browse the app store on wifi? If not, can I connect it to my mum's macbook without wiping her/mine iphone/itunes? I'm only confused because of the manual...cheers!