The InkCase i7 is rising through the ranks as one of the most unique cases on the market – and it’s guaranteed to transform the way you use your phone. Whether you’re a bookworm or someone with lots to do, this case is for you. What is it? It’s a phone case with an ink screen on the back. It allows you to display photos, eBooks, news posts, and more. It also comes with an inbuilt battery and storage space.