Basics
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Using a power source other than the charger, such as a computer, may result in a slower
charging speed due to a lower electric current.
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The device can be used while it is charging, but it may take longer to fully charge the
battery.
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If the device receives an unstable power supply while charging, the touchscreen may not
function. If this happens, unplug the charger from the device.
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While charging, the device and the charger may heat up. This is normal and should not
affect the device’s lifespan or performance. If the battery gets hotter than usual, the
charger may stop charging. If this occurs during wireless charging, disconnect the device
from the charger to let it cool down, then charge the device again later.
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If you charge the device while the multipurpose jack is wet, the device may be damaged.
Thoroughly dry the multipurpose jack before charging the device.
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If the device is not charging properly, take the device and the charger to a Samsung
Service Centre.
SIM or USIM card (nano-SIM card)
Installing the SIM or USIM card
Insert the SIM or USIM card provided by the mobile telephone service provider.
For dual SIM models, you can insert two SIM or USIM cards so you can have two phone
numbers or service providers for a single device. In some areas, data transfer speeds may be
slower if two SIM cards are inserted in the device than when one SIM card is inserted.
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Use only a nano-SIM card.
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Use caution not to lose or let others use the SIM or USIM card. Samsung is not
responsible for any damages or inconveniences caused by lost or stolen cards.
Some services that require a network connection may not be available depending on
the service provider.