Hi guys, wanna ask if i travel to another country and get a prepaid sim there, will i be able to use it on my digi iphone 4 without the need to re-activate the phone on itunes? because i wont be bringing my laptop and i really dont want to get stuck with a useless phone for the whole trip. Anyone has any experience before using our malaysia iphone set in another country, with a foreign simcard?

Thanks!