Then all the settings on your iPhone will be wiped and you can set up your iPhone again to check the matter. Go to 'Settings' > 'General' > 'Reset' > 'Reset All Settings'. And this operation won't cause any data loss, do it without worry. If your iPhone brightness not working in iOS 11 caused by some errors in iOS settings, you can try to fix this issue by resetting all settings on iPhone. Go to 'Settings' > 'General' > 'Accessibility' > 'Zoom' > turn it off. Therefore, turning off Zoon is one way deserving to try to fix this problem. If the Zoom feature is on, you may get the dim screen on your iPhone. After 30 seconds later, press and hold the 'Sleep/Wake' button again until the Apple logo appears on your iPhone. Press and hold the 'Sleep/Wake' button until the red slider shows up, then drag the 'slider to power off'. Long-time no restarting will cause some unexpected issues on your iPhone, such as iPhone live wallpaper not working, iPhone screen recording not working or iPhone auto-brightness not working here.

Go to 'Settings' > 'General' > 'Accessibility' > 'Display Accommodations' > turn off 'Reduce White Point'. There is a setting called Reduce White Point on your iPhone that will reduce the intensity of bright colors on your device and then you will have a dim screen. Read on and use the effective solutions below to fix iPhone brightness not working after iOS 11. New iOS update may cause various system-related problems, such as iPhone keeps restarting, or iPhone alarm/notification/flashlight not working properly. 5 top tips to fix iPhone brightness not working in iOS 11 In this article, we will show you what to do if your iPhone brightness not working in iOS 11 with the situation above. Can anyone help me to fix this issue and I need my iPhone auto-brightness works again! Thanks!'Īctually, many users have encountered various iPhone brightness problems after updating to iOS 11, including iPhone screen is too dark while the brightness level is all the way up, iPhone auto-brightness not working, and iPhone brightness won't go up. 'I am pretty happy with my new iPhone 8, but the auto-brightness is NOT working properly! Kinda irritating as I have to manually set things every time I get into a dark room and then out, and into the sunlight etc.

Brightness control not working