This is a samsung galaxu s6 phone its model id is sm g628gzsains this is a smart mobile phone I like this in this mobile phone you get 4GB ram and 2.1 GHz+1.5GHz exynos 7420 64 bit processer and arm mali - T760 MP8 GPU but this phone have not dual sim this mobile phone had a single sim so you do not use two sim card in this mobile phone and there are nano sim in this mobile phone you can bet 32 GB inbuilt memory and android loliop 5.1v in this phone