Samsung SM-T837R4 User Manual

Basics18Fast chargingThe device has a built-in fast charging feature. You can charge the battery more quickly whilethe device or its screen is turned off.Increasing the charging speedTo increase the charging speed, turn the device or its screen off when you charge the battery.While charging the battery when the device is turned off, the icon appears on the screen.If the fast charging feature is not activated, launch the Settings app, tap Device maintenance→ Battery → → Advanced settings, and then tap the Fast cable charging switch toactivate it.• You cannot use the built-in fast charging feature when you charge the batteryusing a standard battery charger.• If the device heats up or the ambient air temperature rises, the charging speed maydecrease automatically. This is a normal operating condition to prevent damage tothe device.SIM or USIM card (nano-SIM card)Installing the SIM or USIM cardInsert the SIM or USIM card provided by the mobile telephone service provider.• Use only a nano-SIM card.• Use caution not to lose or let others use the SIM or USIM card. Samsung is notresponsible for any damages or inconveniences caused by lost or stolen cards.Some LTE services may not be available depending on the service provider. For moreinformation about service availability, contact your service provider.