How to Adjust your iPhone’s Brightness Settings
Step 1. To adjust phone’s brightness setting quickly in control center, swipe down from the right corner of your display.
Step 2. ‘Drag’ the brightness level bar up or down according to your preference.
Step 3. To modify phone’s brightness in more detail. Go to ‘settings> display & brightness option’.
Step 4. ‘Drag’ the slider to right for high intensity and to left for a low intensity of brightness in your iPhone.
Step 5. To get more natural appearance and brightness level in your iphone, turn on ‘True Tone’ from the ‘display & brightness option’.
Step 6. To adjust the warmth of your brightness level. You can turn on ‘Night Shift’. ‘Drag’ the slider to left for less warm brightness and to the right for more warm brightness.