Samsung Galaxy J3 Eclipse User Manual page 15

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 device's normal range of operation.
Disconnect the charger from the device and wait for
the device to cool down. For more information, visit
samsung.com/us/support/answer/ANS00076952.
Getting started 8