I know that the autoroam is for overseas, but what I meant was when in overseas, like you said, we can join other network. But does that means we use the auto roam to connect to the overseas local provider network? Or connect without autoroaming?
If its connected via the autoroam, does that mean that we have more charges to pay since there's be a few connections before we can make a call. Since our SIM card is still in the phone, autoroam shrges still apply?
In this case, isn't it cheaper to buy a call card when overseas?