An Amazon shopper named Leah reviewed a pink MoMoCity iPhone 7 case Sept. 30, two weeks after the phone went on sale. The same day, the same user reviewed a gray Ultra Armor case for the iPhone 7 Plus. And earlier that same month, she reviewed a metal case for her iPhone 6, another MoMoCity case for her iPhone 6 Plus and a MixcTech Dry Bag case for her iPhone 5s.