How to select HSDPA network in HTC touch diamond P3490?

I don't know how to enable 3G network on this phone ?

Does anybody know how to select HSDPA network in HTC touch diamond P3490?

Hi, it is a windows mobile 6.1 , you have to goto Start --> Settings --> Phone --> More --> Band Selection. There select WCDMA (if available) ie. band which refers to HSDPA.

Above steps may differ a little but mostly are same in windows mobile.