Samsung c3312 duos is bad mobile in my symbion mobile to smartphone using experience.
1) I bought this features less mobile in 4k.
2) It is camera quality is poor.
3) So hard touch screen sensivity.
4) Only 320* 240 resolution videos support.
5) Very poor battery backup.
6) No wifi and 3g connectivity.
7) whatsapp not support and not good games for it.
This phone is waste of money. There are lot of nokia phone which is so better than this.
I dislike this mobile: (