How can I resolve accessibility settings issue on iPhone?

Hello txs99,

welcome to the Apple (user-to-user) Community.

Re: I can't set my Accessibility option of Invert Colors, Invert Colors Mode,Display Contrast

or any other display option. Please help!

Wondering if this is on iPhone (see below) or Mac (see further below), and what happens when you try ...

or

whether you just need to locate the correct settings:

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For iPhone: with iOS 18 installed:

See the article: Change display colors on iPhone to make it easier to see what’s onscreen - Apple Support

Eg: says for Invert Colours:

1. "Go to Settings  > Accessibility > Display & Text Size.
2. Turn on one of the following:

• • Smart Invert: Reverse colors everywhere except images.
  • Classic Invert: Reverse all the colors onscreen."

and

"Tip: Quickly set brightness with the slider in Control Center."

More info. on how to: Adjust the screen brightness and color on iPhone - Apple Support

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For easy access to controls: You can customize Control Center if you wish:

See how to: Use and customize Control Center on iPhone - Apple Support

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If needed: For Mac with MacOS 15:

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See the Note below which explains that if you use Night Shift or Color filters (except "Geyscale")

then Invert Colours is turned off.

Change display colors on Mac to make it easier to see what’s onscreen - Apple Support

Eg says:

1. "Choose Apple menu  > System Settings, click Accessibility  in the sidebar, then click Display on the right. (You may need to scroll down.)
2. Turn on “Invert colours”.
3. Note: If you turn on Night Shift or colour filters (except Greyscale), “Invert colours” is automatically turned off.
4. Choose a mode for inverting colours:

• • Smart: Invert colours everywhere except images and video.
  • Classic: Invert colours everywhere."

All the best :-)