The iPhone 6 and iPhone 6 Plus are smartphones designed and marketed by Apple Inc. The devices are part of the iPhone series and were announced on September 9, 2014, and released on September 19, 2014. The iPhone 6 and iPhone 6 Plus jointly serve as successors to the iPhone 5S and were themselves replaced as flagship devices of the iPhone series by the iPhone 6S and iPhone 6S Plus on September 9, 2015. The iPhone 6 and iPhone 6 Plus include larger 4.7 and 5.5 inches (120 and 140 mm) 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 6 Plus received positive reviews, with critics regarding their improved design, specifications, camera, and battery life as being improvements over previous iPhone models. However, aspects of the design of iPhone 6 were also panned, 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. Pre-orders of the iPhone 6 and iPhone 6 Plus exceeded four million within its first 24 hours of availability—an Apple record. More than ten million iPhone 6 and iPhone 6 Plus devices were sold in the first three days, another Apple record. Despite their positive reception, the iPhone 6 and 6 Plus have been the subject of several hardware issues, including most prominently, being susceptible to bending under pressure (a design flaw nicknamed "Bendgate"), and as 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 the "touch disease"). The iPhone 6 Plus was also the subject of camera issues, including some devices with malfunctioning optical image stabilization or otherwise faulty rear cameras. The iPhone 6 and iPhone 6 Plus were moved to the mid-range of Apple's iPhone lineup when the iPhone 6S and 6S Plus were released in September 2015. The iPhone 6 and 6 Plus were discontinued on September 7, 2016 when Apple announced the iPhone 7 and iPhone 7 Plus. Their spot as the entry-level iPhone has been taken by the iPhone SE, which was released earlier on March 31, 2016.