Camera integration for portable electronic devices

A portable electronic device can have a housing including a wall, the wall at least partially defining an external surface, and the housing defining an aperture disposed opposite the wall. A display assembly can be positioned at the aperture and a retention component can be positioned at least partially in an internal volume defined by the housing. The portable electronic device can also have an optical component that includes an optical component housing defining a camera aperture and a camera module positioned at the camera aperture. The optical component can be configured to be removably retained against the wall by the retention component and to be removably retained against the display assembly by the retention component.