Currently all the Apple’s iPhone 4 & 4S has 3.5 inch screens, now according to the Reuters the upcoming next Apple iPhone 5 has a bigger 4.6-inch Retina display and should be launched in Q2 this year. They also mentioned that the iPhone maker has already placed orders with its display suppliers to Samsung and LG. Right now Samsung is 4.6-inch OLED display for its flagship Galaxy S II smartphone, introduced in April last year and one of the biggest competitor of Apple iPhones.
But both the leading supplier of display to Apple declined to comment to the news that they had received any orders. Also there is no confirmation from the end of Apple officiates, nothing can be said for sure. But one thing is sure that apple is in the mood to hit the smartphone market with his next upcoming iPhone. So wait for some more time to come the official confirmation from Apple Officials.