IPhone 5C shipped with iOS 7. The iPhone 5C was sold at a discounted price point in comparison to the 5S: unlike Apple's usual practice of lowering the price of the previous model upon release of a new version, the iPhone 5 was explicitly discontinued and replaced by the 5C. On September 9, 2014, the 16 and 32 GB iPhone 5C models were replaced by the 8 GB model with the announcement of the iPhone 6 and iPhone 6 Plus. On September 9, 2015, the 8 GB version was discontinued when the iPhone 6S was announced. The iPhone 5C was redesigned using
IPhone SMS was added in the 1.1.3 software update. Support for MMS was added in the 3.0 update, but not for the original first generation iPhone and not in the US until September 25, 2009. At WWDC 2007 on June 11, 2007, Apple announced that the iPhone would support third-party web applications using Ajax that share the look and feel of the iPhone interface. On October 17, 2007, Steve Jobs, in an open letter posted to Apple's "Hot News" weblog, announced that a software development kit (SDK) would be made available to third-party developers in February 2008. The iPhone SDK was