Crochet iPhone 5c case with a free pattern with all written details and guidelines. For this, you can use any yarn from the leftover. However, it's better to go with cotton yarn in blue color. Use a 2.75mm crochet hook for working on this patterned iPhone case. If you are familiar with double crochet, single crochet, and single half crochet stitches, you can effortlessly get your hands on this phone case. girliescrochet