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As the vapor moves away from the hot processor area, it cools down and recondenses back into liquid form, which is then reabsorbed by the sponge. This continuous cycle effectively regulates temperature, preventing overheating and allowing the device to sustain high performance for extended periods.
The "Rain System" — An Ingenious Thermal Solution
Apple’s engineers have gone a step further, recreating what they term a "rain system" within the phone. While the specifics are not fully detailed, this analogy points to a dynamic, self-regulating cooling process that resembles the natural evaporation and condensation cycle of rain, but miniaturized and integrated into the phone’s internal architecture.