How do I brighten screen on Galaxy S7 active

[Android Central Question]

Accidentally set screen to 0 brightness on my Galaxy S7 active and now cannot see to bring it back up also it has a screen lock engaged how would I go about fixing this problem

 

[SpookDroid]

Might be wrong, but doesn't reboot fix that? Also, brightness level 0 is not really screen off, so you should still be able to see the contents of the screen in a dark place, so just take it to a dark room or put it under a shirt or blanket and cover your head with it.

You can try booting up in Safe Mode and see if that helps, but not sure the settings there will be kept when going back to Normal mode or viceversa. The 'dark place' method above should be a lot easier if rebooting doesn't do the trick.