iPhone
Apple's engineering teams have produced devices of considerable structural integrity, capable of surviving drops from reasonable heights, temporary submersion in water, and the constant friction of pocket residence. The iPhone 15 series boasts IP68 water resistance and ceramic shield displays that resist cracking with improved reliability.
However, durability metrics deteriorate rapidly under extreme conditions. Temperatures above 45 degrees Celsius trigger thermal shutdown. Exposure to flame produces immediate and irreversible failure. The iPhone, for all its engineering sophistication, was designed for environments that humans have already made comfortable for electronics—not environments that are actively combusting.
Firefighter
The firefighter operates routinely in conditions that would instantaneously destroy any consumer electronics. Bunker gear provides thermal protection rated to 260 degrees Celsius for limited exposure, whilst self-contained breathing apparatus enables function in atmospheres containing zero breathable oxygen and considerable quantities of toxic combustion products.
The profession maintains a casualty rate that acknowledges the fundamental hostility of working conditions. Approximately 60-80 firefighters die in the line of duty annually in the United States alone—a statistic that speaks to both the danger and the willingness to endure it. Human durability, augmented by specialised equipment, enables function in environments no technology survives.