Amazon founder and CEO Jeff Bezos' patent for a phone airbag patent was recently approved. Here's how it would work: "Prior to impact between a surface and a device, a determination of a risk of damage to the device is made. If the risk of damage to the device exceeds a threshold, a protection system is activated to reduce or eliminate damage to the device.
Below is a Video of Lenovo Flying Laptop having technology something similar to this.
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In the patent filing papers, this system utilizes the handset's integrated gyroscope, camera, accelerometers as well as other onboard sensors to determine if it is currently falling. Should a fall be detected, the system will deploy airbags to reduce potential damage - or possibly change the trajectory of its fall by firing jets of air.
Source: dailymail.co.uk/news/article-2248824/Airbag-dropped-smartphones-invented-Amazon-patents-airbag-air-jet-mobile-phones