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Which saves electricity, HarmonyOS System No.4 or HarmonyOS System No.3?
HarmonyOS system 4. According to the query technology geek network.

1 and HarmonyOS system 3 have outdated CPU versions and outdated power management systems. HarmonyOS System 4 adopts more advanced technology, more efficient CPU and more optimized power management system, which can better control power consumption.

2. During the software shutdown process, HarmonyOS system 3 still consumes a lot of power in the background. HarmonyOS System 4 optimizes the software and adopts more intelligent algorithms to reduce power consumption.