New Samsung A790, CDMA & GSM

[ja_cellman]

Samsung's a790 global phone is the first phone to incorporate CDMA and GSM technology in the same device.
Dimensions: 3.4" x 2.0" x 1.0"
Weight: 4.2 oz.
Continuous digital CDMA talk time: Up to 2.9 hours*
Continuous digital GSM talk time: Up to 3.5 hours*
Standby Time CDMA: Up to 5 days*
Standby Time GSM: Up to 5 days*
Color: Silver
Main Display: 176 x 220 pixel, 260K Color, TFT display
External Display: 128 x 96 pixel, 65K color TFT display
Mode: Dual band/single mode (1900/800 MHz digital)
Mode: Dual band/single mode (900/1800 MHz digital)
Wireless Protocol: CDMA & GSM
http://www.samsungtelecom.com/usa/a790duo.jpg

[24hrs]

CDMA and GSM, how exactly does that work?
Do CDMA phones use sim cards?

[marlonxp]

Thats a nice phone to have in jamaica.