I dont know why samsung had launched this Samsung On Nxt Mob.It is same like the J7 prime.It is a full copy of J7 prime.But main thing I say worst to this phone is, because it has not a simple sensor that is gyrometre accelerometre etc, what foolishness is this, calling performance is also not good.And lags so much I say.No any extra features.Just in simple words I can say, please dont buy this device.