Tap Voices and then Voice preferences. You can then choose from the following options:
Read early warning instructions
Select the checkbox if you want to have early warning instructions read to you such as "ahead, turn left."
Replace spoken instruction with a beep
Choose whether you want the spoken instructions to be replaced with a beep always, never or above a certain speed.
When you are talking on the phone, spoken instructions are always replaced with a beep so that you don’t have two voices talking to you at once.