[Galaxy S8/S8+] How to appear the brightness adjustment bar on the notification panel?
Step 1. Open the notification panel by dragging the status bar downwards
Step 2. Then drag the notification panel downwards
Step 3. Tap (More signal) next to the brightness adjustment bar
Step 4. Tap the Show control on top switch to activate it and tap DONE.
4.1:Tap the Show control on top and enable it.
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