The iPhone 6 and iPhone 6 Plus are smartphones that were developed and marketed by Apple. They are the eighth generation of the iPhone, succeeding the iPhone 5, iPhone 5c and iPhone 5s, and were released on September 19, 2014. The iPhone 6 and 6 Plus respectively include larger 4.7-inch and 5.5-inch displays, a faster processor, upgraded cameras, improved LTE and Wi-Fi connectivity and support for a near-field communications-based mobile payments offering. The iPhone 6 and iPhone 6 Plus were replaced as the flagship devices of the iPhone series by the iPhone 6s and iPhone 6s Plus on September 9, 2015.
The iPhone 6 and 6 Plus received positive reviews, with critics regarding their redesign, specifications, camera, price point, and battery life as improvements over previous iPhone models. However, aspects of their design were criticized, including plastic strips on the rear of the device for its antenna that disrupted the otherwise metal exterior, and the screen resolution of the standard-sized iPhone 6 being lower than other devices in its class. The iPhone 6 sold extremely well, making it the best-selling iPhone model and the most successful smartphone to date. The iPhone 6 and 6 Plus supported iOS 8, 9, 10, 11 and 12 before being dropped by iOS 13.