Check that your sound is turned up loud enough to hear: this might seem obvious, but it's one of the most common causes of Apple Maps not speaking while in use. To access the navigation menu, swipe up from the bottom of the screen if the side volume buttons are set to loud. Check if your device is muted as well. 1. On your iPhone, open the 'Settings' app. Next, go to the 'Maps' settings. 2. Secondly, open the settings for "Driving and Navigation." 3. Search for the option ‘Navigation Voice Volume’. 4. Then, select 'Loud Volume', 'Normal Volume', or 'Low Volume' from the options. 5. After the settings have been fixed and saved, you need to exit the 'Settings' tab to get directions from Apple Maps. 6. The voice can be turned off by turning off your car's speakers if your device is Bluetooth-connected to your vehicle. 7. You can reset all network settings on your iPhone by going to settings > reset > reset network settings. You may be able to use your iPhone again after re-enabling network settings.