The Galaxy Grand Prime is headed for developing markets where affordable phones with large screens with underwhelming pixel density are in high demand.
In this case we’re talking a 5 TFT of qHD resolution ( 540 x 960px) boiling down to 220ppi. 720p has become common in the midrange these days, but don’t let tech geeks and sales people overstate how important it is - most laptops and desktop monitors have half that.