Auto brightness option not working iPhone 7 Plus red product

Hello nouman16-nk,

Thanks for using Apple Support Communities. It sounds like you’re having trouble with auto-brightness on your iPhone 7. I’m happy to provide some steps that may help.

To start, make sure you’re running the latest iOS version:

Update your iPhone, iPad, or iPod touch - Apple Support

Then, try the steps in this article for adjusting brightness:

Adjust the brightness on your iPhone, iPad, or iPod touch - Apple Support

You will want to make sure auto-brightness is enabled by tapping Settings > Accessibility > Display & Text Size.

If none of the above helps, you will want to reinstall iOS. While this shouldn’t delete any information from your iPhone, it’s a good idea to have a backup handy:

How to back up your iPhone, iPad, and iPod touch - Apple Support

To reinstall iOS, follow the steps in the article below under the section labeled “Put your device in recovery mode and set it up again”:

If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support

Best regards.

nouman16-nk,

Thanks for coming back. If the troubleshooting from the previous message did not resolve your issue, you’ll want to contact Apple Support for further assistance.

Take care.