1. Compatibility Support: This phone case only compatibility with OPPO A16/ A16S/ A54S. 2. Built-in Screen Protection: The claer case with screen protector with sensitive touch performance while which offers full-screen coverage and protects the screen from scratches cracks. 3. Military Drop Protection: The protective case with double-layer design of the built-in screen protector and sturdy transparent back cover provides 360 full-body protection for your phone. Unique shock-absorption design to disperse severe shocks, prevent unexpected impacts and scratches. 4. Perfect Fit: The phone cases buttons are designed accurate and highly responsive, the precise cutouts makes it very easy to access all the buttons,controls and charging ports. 5: Easy Installation Design: 2 Steps: Cover the front phone case onto the face of phone, then press the whole phone into the backplate of shockproof case. Very easy to fit and support repeated use.If you have any questions about the phone case, please feel free to contact us.