Samsung SM-G970UZKAXAA User Manual page 19

Getting started
NOTE Use only charging devices and batteries that are approved by Samsung.
Samsung charging devices and batteries are designed for your device to
maximize battery life. Using other charging devices and batteries may void your
warranty and may cause damage.
NOTE Your device is IP68 rated for dust and water resistance. To maintain the
water-resistant and dust-resistant features of your device, make sure that the
SIM card/Memory card tray openings are maintained free of dust and water, and
the tray is securely inserted prior to any exposure to liquids. For more
information, see Maintaining water and dust resistance on page 148.
NOTE While charging, the device and the charger may become hot and stop
charging. This usually does not affect the device's lifespan or performance and is
in the normal range of operation. Remove the device from the charger and wait
for the device to cool down. For more information, visit
samsung.com/us/support/answer/ANS00076952.
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