I've had my blade max view for about 8 months. Everything was spot on and worked great until a couple of months ago. Now, the activity sounds (ie... text messages, instant messages, ring tone) don't work when screen is asleep. I've checked everything. All volumes are up, "do not disturb" is off, etc. ITS DRIVING ME CRAZY!!! WHAT'S GOING ON AND HOW DO I FIX IT? Thanks.... Fast response is needed.