Galaxy A8/A8+: How to restart if the device appears to be frozen or hanging?
If your device is frozen and unresponsive, you may need to close apps or turn off the device and turn it on again, Press and hold the Power key and the Volume down key simultaneously for more than 7 seconds to restart it.
If after restarting the device you still find your device freezes sometimes or is sometimes unresponsive, there are some actions you can try to help correct this symptom:
Anti-malware application may not be available depending on the region or service provider
If the problem is still not resolved, contact a Samsung Service Center.
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