Here is a wide selection of options for your display (front / screen rotation / smart stay / screen time out / screen mode / auto adjust screen tone - which adjust the brightness based on the on-screen images / daydream LED indicators / touch key light duration / increase touch sensitivity.)
You will see that our screen is now nice and bright
This is how you adjust the brightness of your screen on your Samsung Galaxy S5 mini or other Android phones. Once again tap on the Apps button. Go to settings. Then tap on display. Once you have display open, you will simple adjust the brightness to your desired setting. Tap OK to approve it. Then you will scroll down and you can auto adjust the screen tone On, or Off, it is your option.