Hi..
I am going to get a pre-paid unlocked iPhone 3G from Optus AU.
because I stay in abroad.
How does optus unlock iPhone 3G??
using unlock code?? or something else from Apple??
and what if I upgrade or restore iPhone? is it still unlocked?
or should I unlock it again?
if I should unlock again, is that unlock code used again?
or should I ask optus to unlock again??