P.Schuman wrote:
> Which types of phones have SIM cards ?
> I recall that initially the GSM phones had them,
> but don't know if they have also become mainstream
> for a lot more phones that are not on GSM networks ?

The only time I've seen CDMA phones that could take SIM cards was in
Korea during the FIFA World Cup. SK Telecom in Korea may still offer
this service with rented phones (you use your own SIM in their CDMA phone).

See
"http://www.cellular.co.za/news_2002/012202-international_roaming_goes_globa.htm"

There are also the combinations GSM/CDMA phones, but only the GSM part
of it uses a SIM card.