Cadcomm is delivering 3G in Cambodia.

For now they are delivering the WCDMA based HSDPA technology on the 2100mhz band.

HSDPA delivers broadband download, and basic upload speeds.

Sometime later they plan on delivering HSUPA wich will provide users with true broadband speed upload, aswell as faster downloads.

Here is the link for more information: 3G Cambodia

This also means that if you have a 3G capable Iphone (current release as of writing.) which is not locked down to a specific telecom provider you could use it in Cambodia.

Though in 2006 the Cambodian Prime minister and his wife supposedly wanted to ban 3G, because of morality and pornography concerns, i guess they have changed their minds since that time.

More on this here: Cambodia to ban 3G

The above article might not be 100% correct, the 3G service has now been launced, but there are limitations to video services.

This is something that will be next to impossible for them to control and stop anyways.
But when it comes to pleasing their wives i guess its the thought that counts for the said Ministers and their wives behind this.