(Reuters) – Apple Inc has asked suppliers to manufacture between 70 million and 80 million of its two upcoming large-screen iPhones by the end of the year, its largest initial production run of iPhones, the Wall Street Journal reported, citing people familiar with the matter. Its forecast for the iPhones with 4.7-inch (11.9 cm) and 5.5-inch (14-cm) displays is much larger than the initial order last year of between 50 million and 60 million versions of the iPhone 5S and 5C, people told the Journal. Both iPhone 6 screens will be larger than the 4.0-inch panels on Apples existing iPhone 5S and 5C models. To factor in the possibility of a higher failure rate for displays, Apple has asked component makers to be prepared to make up to 120 million iPhones, people told the Journal on Monday.