I am using this phone from last 3 months Sumsung j7.
It is amazing phone with primary camera 13mp and secondry camera 5mp front camera with front led flash light. It has 1.5gb ram with 16gb internal storage.and support otg ( on the go).
This is a dual simphone.first sim allows 4g. And support microsd card slot till 128gb.battery backup of 3000mah allows to use this phone full day in heavy uses. Best phone for gaming experiences. With super almond 5.5 inch screen. Overall handling of the phone feel really good. But volume of the phone is littel bit lesser. Manytime back button doesn’t respond. So in 15k price, value for money phone.