How can I make buttons bigger on my iPhone 16?

What buttons are you asking about? If you mean the home screen icons go to Settings/Display & Brightness and change the Display Zoom setting.

If you need larger than that go to Settings/Accessibility/Zoom to make everything larger, but be sure to read the usage information under the Zoom setting so you understand how to use it.

Apple Accessibility allows larger buttons. Please follow this path,

iPhone > Settings > Accessibility > Display & Text Size > Button Shapes > enable > buttons become slightly larger and fonts can also be increased in size. This may interfere with some websites and certain features may not be displayed properly.

Apple Accessibility allows larger buttons. Please follow this path,

iPhone > Settings > Accessibility > Display & Text Size > Button Shapes > enable > buttons become slightly larger and fonts can also be increased in size. This may interfere with some websites and certain features may not be displayed properly.

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