AI-generated editorial illustration; not a documentary photograph.
Apple’s Show Borders accessibility setting can make buttons, controls and window boundaries easier to distinguish on iPhone, iPad, Mac and Apple Watch. The option adds thin borders or colored shading around selected interface elements, and some controls may also receive underlines.
Where it is available
The setting is reported on iPhone and iPad running iOS 26, while the Mac version was added with macOS 27 Golden Gate. On Apple Watch, Show Borders is available in watchOS Settings under Accessibility. The effect varies by interface and app, so enabling it does not necessarily change every screen.
How to enable it on Mac
On a Mac running macOS 27 Golden Gate, open System Settings, select Accessibility, choose Display and turn on Show Borders. The change can outline elements such as the System Settings search bar, navigation buttons and toolbars in apps including Pages.
iPhone, iPad and Watch
On iPhone or iPad, open Settings, go to Accessibility, select Display & Text Size and enable Show Borders. The source describes visible changes including a bordered back button and gray circles behind arrow controls in the Files app. On Apple Watch, open Settings, choose Accessibility and turn on the option.
Show Borders is one of several display adjustments available for improving legibility. The source also points to Increase Contrast and Reduce Transparency, while noting that Liquid Glass settings can affect the overall interface appearance. Users of macOS 26 Tahoe may instead see Show Toolbar Button Shapes, which the source says is no longer present in macOS 27.
Source: How to add borders around system elements on iPhone, iPad, Mac

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