Phone Skope iPhone XR Lifeproof Case Adapter - Phone Skope's iPhone XS LifeProof FRE Case Adapter is one of two required pieces. This phone case adapter is made specific to the iPhone XS LifeProof FRE Case (sold separately; will only work with the LifeProof FRE model) and is made out of ABS plastic reinforced with nylon and carbon. With your phone in the LifeProof FRE Case, slide your phone into the case adapter and then lock in the optic adapter (sold separately). The easiest way to use this case is to download the Phone Skope Camera app in the App Store.