Samsung galaxy s duos comes with a Hd 4.0 inch display and has android 4.0 out of the box ! Still no update has came to this smartphone ! Samsung galaxy s duos has 768 mb of ram and has 4gb internal memory, which can be expanded upto 32gb ! But the main problem of Samsung galaxy s duos 2 is That it lags too much because of Android 4.0 Ice scream sandwich. Samsung galaxy s duos, The most popular mid ranged phone of 2013, even my many friends and relatives bought it.