The tablet's 7.9 Retina Display features a native resolution of 2048 x 1536, showing up to 3.1 million pixels at 326 ppi. The Retina Display's capacitive touchscreen lets you utilize all the multi-touch gestures of iOS 8. The iPad mini 3 introduces Apple SIM, which gives you the flexibility to choose from a variety of short-term mobile data plans from select carriers right on your iPad, as well as download at up to 150 Mbps when away from a Wi-Fi network. You can also create your own mobile hotspot to share your mobile connection with laptops and other Wi-Fi enabled devices with Personal Hotspot. The mini 3 features the dual-core, 64-bit A7 chip, allowing for more robust and powerful apps. Also, the A7 chip supports OpenGL ES version 3.0 so the iPad mini can enable detailed graphics and visual effects once only possible on desktop computers and game consoles. Grade B products will look and perform well although may show some signs of wear, including scratches and/or other surface imperfections. Units may include hairline cracks, minor dents on corners, and minor wear on the screen. Grade B products are fully functional and perform as new.