The new iPhone will have a screen that measures 4 inches diagonally from corner to corner, according to Reuters. This is an increase to previous iPhone screens which currently measure 3.5 inches. The move to a bigger screen might be a response to Samsung's Galaxy phone, which has a 4.8 inch screen and outsold the iPhone in the first quarter of 2012. Apple has reportedly already started ordering the bigger screens from suppliers.
And in other iPhone news, China Mobile, the world's largest wireless carrier, is in talks with Apple to make the iPhone available in China, according to Forbes. Currently China Mobile has 667 million subscribers and allowing the iPhone into that market would be a significant boon to Apple. No time table has been set.