How to restart Samsung Mobile Device?
If the device is frozen and unresponsive, you may need to close apps or turn off the device, follow by turning on again.
To restart device, press and hold the Power key and the Volume down key simultaneously for more than 7 seconds to restart it.
Please note: This article is useful for newer models such as Galaxy S9/S9+, Note8, S8, S8+, A8 and A8+, with the battery intacted within the device.
If the device remains frozen or unresponsive, there are some actions that you can try to help correct this symptom:
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