Why you can't hear the voice directions on Google Maps and other tech questions answered

Your phone and car may have a bad Bluetooth connection. Turn off Bluetooth on both of them, then turn it back on. — dpa

Q: I use Google Maps on my Android phone, an LG K51. When I'm at home, and the phone is using WiFi, I hear the app's voice directions. But once I'm in driving my car, the voice directions can't be heard. What's wrong?

— Doug Gwost, Shoreview, Minn.