Please avoid this, I have brought it and faced auto function problem from 12th day, so as the problem arise on 12th day, it can not be replace through Amazon or Samsung. You have to roam around service centre and only it will be repair rather replacement.
The problem is when you are opening any application, the phone start selecting own its own , even you dont have to touch the phone.
I contacted Samsung customer care too, they told me to download smart tutor to look into the problem, but even they could not able to look into it remotely as when they opening some application , say for example setting the phone is selecting in its own the parameters , so even they failed to look it properly. I am still roaming around service centre. Please avoid this product.