Top smartphones are not cheap by any means. If you have one, you know the importance of investing in a decent protective case for it. The AD Case by Philip Frenzel is not your average protective case though. It has sensors and hook-like springs that activate when a fall is detected.
The Active Damping is not too bulky and can be reused to keep protecting your phone. The springs can be closed manually. The above video shows how the AD Case can protect smartphones.[Source]