Hi, @Helpmore2 , on your Charge 4 please swipe left until you come to the settings app. Tap to open then tap on “Brightness” to scroll between normal, auto and dim.
If your Charge 4 is currently on Dim you may need to go into a very dark room to see the settings!
I hope this helps. Welcome to the forums!
Sense, Charge 5, Inspire 2; iOS and Android
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