Turn on iPhone or iPad accessibility features using your Mac
Your iPhone, iPad, or iPod touch includes many accessibility features that make it easier to use your device if you have visual, hearing, or other physical disabilities.
The following accessibility features are available on iPhone (3GS or later), iPad, or iPod touch (3rd generation or later):
Use white-on-black display
These accessibility features work with all apps preinstalled on the devices, as well as many apps downloaded from the App Store.
Turn on accessibility features
Connect your device to your Mac.
You can connect your device using a USB or USB-C cable or using a Wi-Fi connection. To turn on Wi-Fi syncing, see Sync content between your Mac and iPhone or iPad over Wi-Fi.
In the Finder on your Mac, select the device in the Finder sidebar.
Select General in the button bar.
Click Configure Accessibility.
Select the accessibility features you want to use, then click OK.
You can also turn accessibility features on or off using the Accessibility settings on your device. For more information, see the documentation that came with your device.