This is the official Samsung SGH-D780 DUOS User Guide in English provided from the manufacturer. If you are looking for detailed technical specifications, please see our Specs page.
Samsung D780 is a tri-band GSM candybar and works with 2 SIM cards at the same time. In standby both cards are active and when dialing, the phone asks which one to be used. Features of the D780 include 2.1” QVGA display, 2-megapixel camera, Stereo Bluetooth and FM radio.