Basics12Reserve battery modeSave the battery power by reserving it for calls and messages. In reserve battery mode, youcan use only the Phone and Messages apps.This feature may not be available depending on the region or service provider.To use reserve battery power mode, open the Home screen, tap Apps → Settings → Battery→ Reserve battery for calls, and then tap the switch to activate it. Then, drag the bar to setthe amount of battery power reserved for calls and messages. When your battery powerreaches the preset level, the device will alert you and activate reserve battery mode.To deactivate reserve battery mode, tap MORE → Disable Reserve battery for calls.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.• Dual SIM models: In some areas, data transfer speeds may be slower if two SIMcards are inserted in the device than when one SIM card is inserted.• Some LTE services may not be available depending on the service provider. Formore information about service availability, contact your service provider.
