Galaxy S4 smartphone was far from the most durable device in the world . Model Galaxy S5 received protection standard IP67, implying tightness of case for dust and moisture.
Reviewers TechSmartt managed to literally check Galaxy S5 strength and compare it to this parameter to its predecessor. Both devices had to go through a series of falls from different heights - from the typical falling out of pocket and slipping from the hands while talking to very extreme flight from a height of two meters.
It is worth noting that after a series of falls Galaxy S5 got a few dents on the body, while at the Galaxy S4 cracked protective glass and cracked camera lens.