Dual sim with 4G. Thin and light in weight stylish and with mind blowing features combined in 1.32gb memory. 3gb RAM .IR.VR and dual app feature ( Run 2 whtsapp or other app without rooting device and without and 3rd party app like parallel space) . The phn is very nice working, nice battery backup , nice camera, no heating like other phones. I also received marshmellow uodate a few days before. I prefer you to buy redmi note 3. It looks awesome. And this affordable to everyone for the features it is.