Be careful about Waze if you notice that it stops giving audible directions. After the latest update of 12/23/14, when using Waze for more than a half hour, not only did the audio go out, but even after shutting off the app, the sound on my LG G3 was killed, even though all the settings were normal. I missed a phone call and a text before discovering the problem, additional test calls showed the ringtones were silent, and the only fix was a power cycle of the phone.
Thinking the app was corrupted, I tried uninstalling and reinstalling Waze and it caused my messaging app to freeze when Waze sent a verification text to my phone. Something is seriously wrong with the latest update to Waze.