Open Settings, and select General > Personalisation > Themes > Standby > Talking theme.

When the talking theme is activated, a list of functions supported by the talking theme is displayed in the home screen.When the talking theme is activated, a list of functions supported by the talking theme is displayed in the active standby. As you scroll through the functions, the device reads the displayed functions aloud.

Select Call features and from the following:

Select Options and from the following:

The available options may vary.