I have a Droid Turbo 2 phone through Verizon. For some reason the sound cuts off on the phone without warning. The phone will not make a ringing sound nor will the alarm make a sound. The phone messages will also not play. If I turn the phone off and then back on the ringer will work and the alarm and I can hear the recorded messages. Within a day or so though the sound cuts out again and I have to cut the phone completely off and back on again to hear the ringer or to hear messages. What is causing this and what is the solution?