A German engineering student has designed a 'mobile airbag' case that protects your phone by detecting when it has been dropped and deploying springs to cushion the fall. The prototype has won a national mechatronics award in Germany, and the product will be launched in Kickstarter later this month.
https://www.notebookcheck.net/No-more-cracked-screens-German-engineering-student-designs-an-airbag-for-your-phone.313678.0.html