Mark wrote:
\> Sorry by this do you mean that if someone from abroad calls any native
> US mobile phone, even if that phone is in the US, they have to pay to
> /receive/ the call? Or does that go for all calls?

In the U.S., the user of a mobile phone always pays airtime whether
calling or receiving a call. For people on post-pay, they generally have
a fairly large bucket of included peak-time minutes per month, and many
such plans include unlimited free off-peak and weekend airtime. Also, it
is very common for all calls to other users of the same provider to be
free at all times. These free times do not apply to pre-pay users.
Furthermore, since the mobile phone user pays for incoming airtime,
there is no surcharge for the caller to call a mobile phone. Mobile
phone numbers in the U.S. cannot be identified by the number, and in
fact, a number can be moved between a landline and mobile provider.