I am very satisfied. I have a second cell phone to my Iphone.
Actually, this phone was designed for the Asian market, so it's a bit small. Nevertheless, one can thus write quite well. And I have very large hands. For that price you should not expect too much you. One can thus not really into the Internet, so I at least did not use it.
It has an optical trackpad like a BlackBerry. So I do not see why I should spend more on a similar BlackBerry 100, just because it's BlackBerry. Okay, the BlackBerry Curve has Wifi but with a cell phone so you do not go to the Internet anyway, since it is easy slow and the display is small.
You can use two SIM cards at the same time with the Samsung. It is always available on both numbers.