IPhone 6 a byproduct of this lack of rigidity, the touchscreen's internal hardware being susceptible to losing its connection to the phone's logic board (nicknamed "Touch Disease"). The iPhone 6 Plus was also the subject of camera issues, including some devices with malfunctioning optical image stabilization or otherwise defects on rear cameras. The iPhone 6 and 6 Plus were moved to the midrange spot in Apple's iPhone lineup when the iPhone 6S and 6S Plus were released in September 2015. The iPhone 6 and 6 Plus were discontinued in most countries on September 7, 2016 when Apple announced the iPhone 7 and
IPhone 4 it would be releasing the white iPhone 4 model on April 28, 2011, for both GSM and CDMA. The release of the white iPhone 4 was carried out on April 28. During Apple's official unveiling of the iPhone 4S on October 4, 2011, it was announced that Sprint would begin carrying the reconfigured CDMA iPhone 4 and the iPhone 4S in the US on October 14. In September 2013, after the release of the iPhone 5S and iPhone 5C, Apple stopped selling the iPhone 4 in most of their stores as well as on their website. It was replaced by