My new HUAWEI phone/tablet, or the one that has just been updated or rolled back, consumes power quickly

Cause:

For a new HUAWEI phone/tablet or the one that has just been updated, a series of optimizations will be performed in the foreground or background, such as data conversion and restoration, app optimization, Gallery smart collection, and file security scanning, which may increase power consumption. After learning your usage habits, the system will dynamically adjust the power consumption to further extend your battery life.

Solution:

Optimizations are performed in the background when the device is idle. Generally, the optimizations can be completed within seven days (if the device is frequently used, the optimizations will take a longer time). After the optimizations are complete, the device will automatically restore its battery life.