[PhotoJim]

My data stick is quad-band GPRS/EDGE (850/900/1800/1900), tri-band UMTS/HSDPA/HSUPA (850/1900/2100). That's close.

We can pick on Europe a bit. If I recall correctly, there is still some Scandinavian coverage with GSM at about 450 MHz. I've never seen any phone that supports these frequencies.

1700 MHz spectrum is just being deployed here in Canada, and 700 MHz spectrum has been auctioned in the US and will be available for cellular deployment as soon as analog TV broadcasting is turned off in the USA. Canada will follow by a couple of years.

The only reason we can get every 2.5G GSM frequency on a device is that the world has stopped adding 2.5G GSM frequencies. There are no GSM radios that do 2.5G at 1700 MHz or 2100 MHz, so there's no need for phones to support those modes.