Multi window comes with nougat, but Samsung had developed this feature way before nougat release, even Galaxy E5 supported Multi window in lollipop version, but Samsung has not given it to J series phones as they are cheaper than E or A series
We appreciate your inestimable suggestion. We have noted down your valuable feedback and we will surely share this with our relevant department, any update in this regards will be convey to you via various means of communication.
