This is not a phone, this is a mistake created by samsung.
It already has manufacturing defect that if anyone calls you then he /she can’t hear your voice.
That was my worst day that I recommended my elder brother to buy it. It was very bad to had that phone . He cursed me for several days.
How can we say that a phone if you cant receive any calls.I guess they should correct it and until they do they should stop manufacturing these defective pieces.