Hi Butterfly95, Welcome to the Samsung Members Community Canada. To increase the charging speed, turn the device or its screen off when you charge the battery.
If the fast charging feature is not activated, launch the Settings app, tap Device care →Battery → Charging, and then tap the Fast charging switch to activate it.
• While charging, you cannot activate or deactivate this feature.
• You cannot use the built-in fast charging feature when you charge the battery using a standard battery charger.
• If the device heats up or the ambient air temperature rises, the charging speed may decrease automatically. This is a normal operating condition to prevent damage to the device.
