I have the Samsung Galaxy S Duos for about 3 months. I switched from an old phone to a smartphone. At the beginning it was quite ok, although I did not like from the very beginning that it is quite slow. Meanwhile, it depends on more and more and takes several seconds to run a command. Until the camera is running, or even rises an app. The problem is likely to be of low memory, which you unfortunately can not expand. Too bad everything else I find really great on the device, but the speed takes my last nerve.
