Black iPhone 7 models sold out.

A week after launching the new iPhone 7, Apple (AAPL) has announced that all black models of the smartphone have been sold out in the pre- order period. It is reported that the pricier iPhone 7 Plus are also sold out. Customers will not be able to purchase iPhones on walk- in basis; however the company has urged people to place their orders online for the time being. The high demands for black smartphones have prompted the company extend delivery for products to November. Meanwhile, Apple’s stocks have increased by 8% this week and the company’s worth of $600 billion has pushed it to the top.