I just looked it up on google and here's what they said.....Otter box has made new cases for the iphone 4s. The iphone 4 can fit in a case for the 4s, but the 4s cannot fit in the case for the 4. This is because otter box has made the opening for the camera bigger in the case for the 4s to allow for more light to enter to be paired with apple's redesign of the camera to allow in more light.