Sound Alert in LOCKED phone
I think Waze could enable an option to be able to keep warning (Radar, Hazards, Accident, Police, Heavy Traffic, etc) even when phone is LOCKED. When I lock my Android 4.3.1 it doesn't alert anything.
6
votes

Great news! This is now available in Waze for Android OS. Install the latest app version to check it out.
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NoEnvriofascist commented
Use your own third party tools to accomplish this. :)
android: expose intents