set cpu freq min 240 and max 600 governor interactiveX
turn off BT gps wifi data network if not use
turn off auto-rotate
turn off vibrate on press or haptic feedback
hmm what else?
that i only know how to save battery
All this above, and I installed the Battery Calibration. Charge the battery until the end (100%), open Battery Calibration, click for calibration, waited a bit to finish out the program and turned off the charger.
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