Apple filed a patent in the US called the "Protective Mechanism for an Electronic Device.
A number of solutions are proposed to position the phone on landing: the movement of a weighted mass within the device: aeroplane foils that extend out from the surface of the device: and a thrust mechanism such as a small gas-propulsion device. The system would need a sensor to detect when the device was falling and how it is positioned relative to the ground according to the website Appleinsider.com.
This technology wouldn't apply to me or my family and friends. We buy cheap payg phones for less than £20 ;o)
But I did notice a new advert on television the other evening, when someone had 'casually' dropped their mobile in a pile of mud or something, and then commenced to wash the mobile with an hosepipe. I do believe they also 'casually' dropped the same mobile under the wheels of an HGV, with no ill effect?.
Or you could combine several natural and human technologies and have an egg shaped phone that transfers the energy of an impact safely to the other side without creating a damaging big bang of any sort.
I suppose in these hi-tech days, one of these is too simple WristStrap I have a few that I've saved from way back that came with cameras and other items. I think I even had one with my 'Brownie' in the '60s or '70s (they came with the camera foc) can easily be clipped to belt loop if phone/camera is in pocket.