If you don't have a ShiftCam 2.0 case, you may consider the following options:
Buy the full ShiftCam 2.0 Travel Set (with 6-in-1 travel lens set)
Buy the ShiftCam 2.0 Case separately (without 6-in-1 travel lens set)
Front-Facing Wide-Angle Lenses are uniquely designed for specific iPhone models and are not interchangeable. (Unless stated otherwise)
ex. iPhone X's Front-Facing Wide-Angle Lens is ONLY for iPhone X. If you are using iPhone Xs, please choose the iPhone Xs's model.