Thank you for reaching out to the Samsung community! We would like to inform you that fast charging means you can charge the battery more quickly while the device or its screen is turned off. About Fast charging • Fast charging uses battery charging technology that charges the battery faster by increasing the charging power. The device supports Samsung’s Adaptive fast charging feature and Qualcomm Quick Charge 2.0. • To use fast charging on your device, connect it to a battery charger that supports Adaptive fast charging or Quick Charge 2.0. • If the fast charging feature is not activated, launch the Settings app, tap Device maintenance → Battery → 3 dot → Advanced settings, and then tap the Fast cable charging switch to activate it.
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