Refurbished iPhone 6s Plus. The refurbished iPhone 6s Plus: get a good deal with Back Market. With the iPhone 6s Plus, Tim Cook and his Apple team reinvented the smartphone in a big way. Exceptional performance speeds and high-quality screen resolution make the refurbished iPhone 6s Plus from Back Market a top-tier smartphone. Apple iPhone 6 Plus smartphone. Announced Sep 2014. Features 5.5″ IPS LCD display, Apple A8 chipset, 8 MP primary camera, 1.2 MP front camera, 2915 mAh battery, 128 GB storage, 1000 MB RAM, Ion.