Hundreds or even thousands of iPhone users around the world are lately complaining that the iOS 10.02.1 has either one or another problem with the updated os.
People experience various issues from extreme battery drainage to the phone naturally going off and brightness issues.
here are four basic tips on how to adjust brightness if none of the above works.
so to adjust the brightness issue you can start with some of the basic options
Make sure “Reduce White Point” isn’t enabled.Go to Settings > Accessibility > Accessibility Shortcut, and make sure Reduce White Point isn’t selected. If it’s selected deselect it. you may also try Settings -> which will reset the display, then set back to Standard.
another tip is to check and disable this setting:
Settings → General → Accessibility → Zoom → Zoom Filter → None (Make sure Low Light is not selected).
Then turn turn Zoom on then back off: Settings → General → Accessibility → Zoom → Zoom
As the 10.2.1 update is known to make the iphone dim when the battery life is less than 50%