Mobile phones with Android system consume a large amount of data

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Accepted Answer

The data consumption of the Android system includes high-priority processes such as system updates, underlying services, calls, messages, clocks, calendars, etc. Due to the need to ensure permissions for these system-level processes, their UID is uniformly marked as 1000. The different applications that consume data are distinguished by UID, so the data consumed by these processes is counted as part of the Android system's data consumption. Notably, updates for system and system-level applications result in the high data consumption of the Android system.