SAMSUNG galaxy grand prime in these days that is top class mobile in the market.there are two types of coloure available in market the number one is white and the second is black .but I like white and I am also using white so my advice is to you guys you have to buy this .the model of this phone is SM-G531H .The device name is GALAXY GR.the version of this device is 5.1.1 .the base band version G531HXXUOAPI1.total device capacity is 8.00GB .its dual sim mobile .two cameras are available in this device .memory card we can also use .touch system is very excellent .we can connect with wifi and and also we can use data .we can turn on data where wifi signal not available .its camera quality is very good .