iPhone
Battery longevity represents the iPhone's Achilles heel in endurance competitions. Under optimal conditions with minimal usage, the device sustains functionality for approximately 75 hours before requiring external power. In wilderness scenarios lacking electrical infrastructure, this timeline compresses dramatically. The iPhone 15 Pro's 3,274 mAh battery depletes with alarming rapidity when searching for non-existent cellular signals.
Furthermore, the device exhibits marked performance degradation in temperature extremes. Below 0�C, lithium-ion chemistry becomes sluggish; above 35�C, thermal throttling activates. The iPhone's operational envelope is, to employ technical terminology, rather narrow.
Bear
Bears have refined survival to an art form over millennia. During torpor, metabolic rate decreases by 75 percent, allowing survival without food, water, or bathroom breaks for up to seven months. The bear's body recycles urea into protein, a biochemical innovation that would make any Silicon Valley engineer weep with envy.
Fat reserves of 180 kilograms accumulated during autumn provide sustained energy release throughout the dormancy period. The species has weathered ice ages, asteroid impacts, and the arrival of humans. It requires no firmware updates, cloud subscriptions, or AppleCare+ to maintain operational status across decades.