Im not satisfied with the phone, i had brought if few days back.it comes with 768MB of RAM. The phone packs 4GB of internal storage that can be expanded up to 32GB via a microSD card. As far as the cameras are concerned 0.3 mp front cam. the sammsung Galaxy S Duos runs Android 4.0 .it is powered by a 1500mAh removable battery.It measures 121.50 x 63.10 x 10.50(height x width x thickness) and weighs 120.00 grams.