The Retina display on the next-generation flagship iPhone will roughly double its pixel count to 1.5 million pixels while retaining a 4-inch size, claims Chinese site Weiphone. The iPhone 5 uses a resolution of 1136x640, or 727,040 pixels. Apple may need to increase pixel density to stay competitive; one of the iPhone 5's main rivals, the HTC One, has a 1080p resolution despite using only a 4.7-inch screen.&nbs
