Apple is thought to be planning the release of two new phones on 10 September, including a much-anticipated cheaper iPhone, dubbed the iPhone 5C. As well as an incremental update to the current iPhone 5, expected to include fingerprint-detecting technology, the iPhone 5C would be Apple's first lower-end phone. Historically, Apple has fulfilled the needs of the low-end market by offering previous years' models at cut-down prices. At a recent earnings call, Apple's chief executive Tim Cook reiterated that plan to investors. When asked about the potential of a low-cost iPhone to first time smartphone buyers, he replied that the number attracted by the iPhone 4 was "very, very impressive. Apple may have switched gears due to a weakness in Chinese sales, or a move to unify the shape of the iPhone line. Additionally, there is a renewed impetus to unify the product line around the iPhone 5's 16:9 screen, the biggest change in form factor since the original iPhone in 2007. Technology analyst Benedict Evans of Enders Analysis argues that although "a cheaper iPhone has been discussed almost since the original launch in 2007", costs have fallen and the market developed "to the point that it now makes sense for Apple to offer a $200-$300 [unsubsidised] model". As with the iPhone 3GS and iPhone 4S, few extra features are expected for the new top-end iPhone. Apple acquired fingerprint security firm AuthenTec last year, and the initial beta of iOS 7 contained settings for a sensor.