How to safely shut down or force shut down Samsung devices

Samsung Galaxy Grand 2 LTE Samsung Galaxy Grand 2 LTE
Samsung Galaxy S3 Mini VE Samsung Galaxy S3 Mini VE
Samsung Galaxy S3 Slim Samsung Galaxy S3 Slim
Samsung Galaxy Grand 2 LTE-A Samsung Galaxy Grand 2 LTE-A
Samsung Galaxy S5 TD-LTE Samsung Galaxy S5 TD-LTE
Samsung Galaxy S3 Neo+ Samsung Galaxy S3 Neo+
Samsung Galaxy S3 Neo Samsung Galaxy S3 Neo
Samsung Galaxy Beam 2 Samsung Galaxy Beam 2
Samsung Galaxy Core 2 Samsung Galaxy Core 2
Samsung Galaxy Core 2 TD Samsung Galaxy Core 2 TD
Samsung Galaxy S5 LTE-A Samsung Galaxy S5 LTE-A
Samsung Galaxy Core Mini 4G Samsung Galaxy Core Mini 4G
Samsung Galaxy Tab Q Samsung Galaxy Tab Q
Samsung Galaxy Tab 4 Nook Samsung Galaxy Tab 4 Nook
Samsung Galaxy Ace Style LTE Samsung Galaxy Ace Style LTE
Samsung Galaxy Note 4 SM-N910S Samsung Galaxy Note 4 SM-N910S
Samsung Galaxy Core Max Samsung Galaxy Core Max
Samsung Galaxy Tab 4 Nook 10.1 Samsung Galaxy Tab 4 Nook 10.1
Samsung Galaxy Grand Neo Plus Samsung Galaxy Grand Neo Plus
Samsung Galaxy Win 2 Samsung Galaxy Win 2