To disable this feature, go to Settings > Accessibility > Display & Text and tap the switch next to “Auto-Brightness” to turn it off (make the switch grey). Sometimes, Auto-Brightness can mess up. Turn it off and on again to reset it. [1] X Research source After you turn off Auto-Brightness, you’ll be able to control the brightness of your iPhone’s screen manually from the Control Center.

To turn this off, go to Settings > Accessibility > Face ID & Attention and tap the switch next to “Attention-Aware Features” to toggle it off (the switch will be grey).

To change the Auto-Lock settings, go to Settings > Display & Brightness > Auto-Lock. You can set this to “Never” if you never want the screen to dim. Be aware that these changes will cause your battery to drain faster. Note that some company-owned iPhones will have restrictions set that you cannot change. [2] X Research source If this is greyed out, you most likely have Low Power Mode on. LPM will restrict your Auto-Lock settings to 30 seconds.

To disable this, go to Settings > Display & Brightness and tap the switch next to “True Tone” to toggle it off (the switch will be grey).

To disable this feature, go to Settings > Battery and tap the switch next to “Low Power Mode” to toggle it off (the switch will be grey).

To turn this off, go to Settings > Display & Brightness and tap Night Shift. Tap the switch next to “Scheduled” to turn it off (the switch will be grey).