Sony xperia z3+ is a very good mobile it works single sim and it has 5.2 inches display Resolution is 1080 x 1920 pixels Android OS, v5.0.1(Lollipop), it can upgrate to v6.0.1(Marshmallow) this mobile has 32GB internal memory and 3GB ram memory can expand to 256GB . the mobile has 20 mp back and 5 mp front facing camera this phone has easy to operate this phone has White, black, copper, aqua green colors it is a very good mobile,