iPhone 4 announcement at WWDC10 this Monday. While waxing poetic on the virtues of IPS, Jobs let us know that he considers it an entirely superior display technology to OLED, and now the world's biggest display maker has a few words to say about it. According to a Samsung spokesperson, the high-res retina display on the iPhone 4 offers only a 3 to 5 percent advantage in sharpness over its own Galaxy S Super AMOLED screen, but sucks down a wasteful 30 percent more power. Moreover, Samsung believes its screens offer better viewing angles and contrast, and concludes by saying that "structurally, IPS LCD technology cannot catch up with AM-OLED display technology." And here we thought Samsung and Apple were getting along so well.