The Apple iPhone 6s runs on iOS. It has a 12 MP iSight camera with Focus Pixels and a 5 MP FaceTime HD camera with Retina Flash, which lets you capture crystal clear images. You can store multimedia files on its 128 GB memory space. Its 4.7-inch Retina HD display with a resolution of 1334x750 pixels is apt for watching movies. This silver smartphone is driven by the Apple dual-core A9 processor, which helps you to multitask easily. This device is locked to O2 and compatible with Vodafone, EE, Three Carriers.