No sound i.e. directions can be diverted to bluetooth earpiece during navigation. In 'settings->sound' there is no option for "use bluetooth" as in iOS and I can not use bluetooth for getting navigation instructions. The "play sound to phone speaker" is off. There must be an option to hear the sound vie bluetooth unless a call comes in, when it should let priority to phone call and then resume itself back to BT unit. The phone is LG L1 E410 , Android 4.1.2 and Waze is 3.9.40.